OS/2 Shareware BBS: 29 Fixes

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File List | 1997-08-18 | 80KB | 1,625 lines

**************************************************************************** * VisualAge C++ For OS/2 Version 3.0 * * Compiler Subcomponent * * Fixes List * **************************************************************************** * * * This fixpak contains fixes that apply only to VisualAge C++ Version 3.0 * * The fixpak must be applied using the provided installation tools. * * * **************************************************************************** * Fixpak CTC308 is Informal Corrective Service * **************************************************************************** FIX/APAR COMPONENT PROBLEM_DESCRIPTION ---------------------------------------------------------------------------- AP 67264 BE Fix an optimization problem with invalid calculation of the bitfield. AP 68203 BE With /Ti+, bad linnum record is generated in the object file. This causes the debug information to be presented incorrectly in the debugger's source view. AP 69639 BE In ring 0, SS is incorrectly associated for an indirect load where it should not be. AP 69641 BE In ring 0, set and restore ES correctly with respect to string operations in scheduler. AP 69645 BE Generate assembler correctly for source files with unix text format. AP 69715 BE Volatile qualifier ignored during loop optimization. AP 70033 BE Inlining of _xchg() causes a run time trap in certain circumstances. AP 71552 BE Fix an optimization bug - when floating point parameters are used in IString parameters in ofstream, the output stream may contain incorrect output. AP 71779 BE With smart linking, the jump instruction in the prolog code is wrong. AP 71788 BE Prevent preloading a NaN when initializing floating point registers in the loop entry. AP 71948 BE Floating point parameters used in the conditionals in multiple simple if-then-else statements cause compiler to trap. AP 72057 BE Fix an incorrect inlining for fabs() when converting a long double precision to double. AP 72180 BE Internal compiler error when there is a floating point store in the last statement of a fall-through case in switch statement. AP 72336 BE Fix an optimization problem with nested ternery expressions being used in an assignment statement. AP 72483 BE A floating point parameter may get clobbered in case where it is used in a loop. AP 72586 BE Fix an bitfield optimization problem that would cause incorrect sizing of the local stack. AP 72763 BE Improve ths local stack usage when many ternery expressions are used as function parameters. AP 71339 BE An assignment value made within relational expression should be stored back to memory after the relational expression. AP 74468 BE If the last function call before return has callee cleanup convention, the caller may trap at the return. AP 75056 BE Fix a particular instance where a mod expression used as a conditional expression generates incorrect result. AP 75172 BE Fix an incorrect increment problem in relational expressions. AP 77025 BE Generate correct code for stack probe when passing structure parameter in functions. AP 77326 BE Correct a scheduler problem with _inp() and _outp(). AP 78219 BE Fix a case where /Oi+ will cause the compiler to trap. AP 80033 BE With /Gv, make sure we set and restore DS properly in instruction scheduler. AP 80507 BE A conditional expression is incorrectly evaluated in a simple if-then-else statement. AP 80694 BE Placing uninitialized structures in BSS segment rather than DATA32 segment. AP 63115 C++FE A combination of redefining a compiler reserved macro (ie. -D__cplusplus) and passing an invalid argument to a function causes a GPF in the compiler. AP 70180 C++FE Wrong Virtual function could be call when the function is overriden in more than one of the paths to the virtual base class. AP 71191 C++FE The destructor for the temporary used to hold the result of a conditional expression (the result of the conditional expression is a class with a destructor) can end up being called too often because of unnecesary calls to it within any or all of the three parts of the conditional expression. AP 71949 C++FE Occasional C++ compiler crashes are observed when building C++ source containing templates. AP 79112 C++FE See AP 71191. QI 67417 C++FE If the /Ly+ option is used, a General Protection Fault may occur when generating the cross-reference lising if a variable in the source has a type whose name is more than 450 characters long. AP 65713 CFE The C compiler would incorrectly mark some typedefs as seg16 after a #pragma seg16. AP 66766 CFE Fixed the problem of unexpected compiler error when using /Wenu option for some programs with switch statements. AP 67956 CFE Missing error message for extraneous semi-colon at file scope. AP 71045 CFE When a function call is evaluated, the side effects of the evaluation of the function designator do not appear until after the actual function call. AP 72220 CFE With /Tn option on, the C compiler gave insufficient information to the debugger causing it to sometimes start at the wrong line or not be able to show the source view. AP 72580 CFE The C compiler would sometimes give an internal compiler error when a precompiled header contained a "#pragma library" directive. AP 76998 CFE With the /Wtrd option on, the C compiler gave an informational message about casts between void* and other pointer types, stating that they were not compatible. The C compiler will now only give the message for such casts if qualifiers are being cast away. AP 78190 CFE If a source file only contained #include statements and precompiled headers were used, the C compiler would incorrectly warn that the source file was empty. QI 62544 CFE Internal compiler error when /Fi, /Si and /Nd options are used together. QI 69632 CFE When compiling with /Gr option, message EDC0506 was missing when address of automatic variable was taken in function arguments or as part of an initialization. QI 69779 CFE The C compiler would sometimes give an internal compiler error when the _Packed qualifier was incorrectly used on something other than a struct or a union. AP 74511 ICC Corrected the problem that on some file systems, tempinc objects were not passed to the linker. AP 71692 ICL Compiling with /Olp for a big source file will trap the intermediate code linker. AP 71759 ICL Pragma handler is ignored. AP 54724 ILINK Under certain circumstances the linker is not able to open a file handle to access its message file. A sys3018 "message file not found" message is generated from within DosGetMessage(). QI 72756 ILINK When an application was linked with debug packing and debug packing overflow occurred, parts of the generated program could not be debugged. In some cases this can cause the debugger to trap. AP 42834 RT Floating-point numbers are not formatted correctly by the printf family of functions, including cout. The problem is a loss of precision which occurs when the format specification calls for many digits of precision (eg. 24 digits). AP 51230 RT Using _putenv() to unset a variable leaves garbage in the environment. For instance, _putenv("xyz") does not remove xyz from environment. AP 69338 RT The locale for German in Germany (de_de) has the wrong abbreviation for Thursday. It should be "Do" instead of "Don". AP 69628 RT The va_start and va_end macros should return (void). AP 70116 RT The iconv function fails to convert a string with a length over 2048 bytes, and returns an errno of E2BIG. AP 70690 RT The printf functions return incorrect count when a null string is formatted using "%s" specifier. The output has the string "(null)", but the returned count does not account for these 6 characters. AP 71422 RT The getenv and putenv functions are case sensitive. AP 72452 RT The min() and max() macros in <stdlib.h> are not properly protected with an #ifndef block. If the compilation unit has a different definition of min() and max(), the compile will fail. AP 72949 RT Whenever a DLL built with VisualAge C++ is loaded and freed by a program not built with VisualAge C++, the runtime will leak 64K of address space. AP 74782 RT _assert failure on _udestroy. Application code should call _uclose before calling _udestroy, regardless of whether the heap was opened with _ucreate or _uopen. In short, each process should call _uclose for each call to _ucreate or _uopen. The other problem is applicable to Windows only. If the process that created the heap dies, the processes that have it open are unable to continue accsessing it, and other processes are unable to open it. The fix introduces two incompatibilities between different levels of FixPacks: 1. If two executables (.exe or .dll) statically link to the different levels of FixPacks (with and without the fix), memory blocks should not be freed across them, ie. application code should not allocate block in one dll and free it in another. 2. The runtime invades the name space of the semaphores and file mappings in the system if shared heaps are used. All name that begin with the string "vacpp" should be consider as reserved in this case. AP 79453 RT The iconv function no longer supports xlt tables. This is incompatible with the iconv support that existed on OS/2 prior to CTC305. This is not applicable on Windows, since this support has never been provided by VisualAge C++ for Windows. AP 80464 RT The setlocale function does not recognize code page 950 for Traditional Chinese (Taiwan). QI 51396 RT The strptime function will fail to parse the weekday name or the month name for locales where names have common prefixes. For example, some countries use Roman numerals as abbreviations for the month names. The first three months are "I", "II", and "III", but parsing stops after matching the first 'I'. QI 57090 RT The strptime() function is unable to parse Japanese dates that use abbreviations for the month name. QI 57142 RT The strftime and wcsftime functions give incorrect results for dates that are formatted using the era specifiers ("%Ec", "%EC", "%Ey", and "%EY"). This is a problem only when using a locale for Japan. QI 63750 RT The strftime and wcsftime functions give incorrect results for dates that are formatted using the era specifiers "%Ec" and "%EY" together in the format string. When using a locale for Japan, the problem occurs for "%Ec" alone because the locale itself uses "%EY" in the expansion of "%Ec". QI 70434 RT Unable to open converters for code pages 1363 and 1386. Entries for these tables are missing from iconv.lst. QI 70750 RT A call to debug_malloc to get storage off a heap that does not have available storage to satisfy the request, and the heap cannot be expanded, may result in runtime trap. QI 72781 RT In <stdarg.h>, va_start is defined as: #define va_start(ap, last) ap = __vastart(last); The comma at the end will cause problems when used in certain contexts, such as for loop or a comma expression. QI 74553 RT The fgetws function leaves a semaphore in the locked state. When fgetws reaches EOF, it returns without unlocking the semaphore. The next I/O operation (eg. fclose) on that file will hang the thread. **************************************************************************** Fixpak CTC306 is Informal Corrective Service * **************************************************************************** FIX/APAR COMPONENT PROBLEM_DESCRIPTION ------------------------------------------------------------------------- AP 65346 BE BE sometimes traps if the inner loop is evaluated such that the outer loop is folded away completely. AP 66201 BE In rare situations a variable is evaluated incorrectly after an array element is accessed if the variable is is postincremented in the array index. AP 67228 BE BE optimizes incorrectly and may generate incorrect code if the following pattern is in the source: c = ...; c = ... (in terms of c) ...; This occurs in rare instances as the BE incorrectly applies common subexpression elimination to such cases. AP 67253 BE Invalid opcode prefix '80' is generated in the object code for the intel OR/AND/ADD/SUB instruction with 8-bit immediate. AP 67798 BE Fix defect in BE register assigner where a variable appears to hold an incorrect value under /O /G5 optimization. AP 67897 BE Fix internal compiler error in BE if there is text after a 'return' statement in the souce module. AP 68491 BE If the last executable statement is a call and is optimized to a jump under /O+, the stack may get deleted if this tail call returns a structure type of 8-bytes or more. AP 68503 BE Correct a switch optimization problem that causes BE to generate invalid run time code when falling through cases and backward 'goto' in the common case body. An infinite run-time loop or incorrect output may be the result. --------------------------------------------------------------------------- AP 64812 C++FE C++ compiler uses a size of 0 when determining the size 6470x.b004 of class member when the member is an instantiation of a template with the class as a parameter and the template is a class that only uses the class to declare a static member. --------------------------------------------------------------------------- QI 60176 ILINK /EXEPACK may produce executables larger than necessary, in some cases even larger than the uncompressed image's size. ---------------------------------------------------------------------------- AP 69878 RT dump_allocated hangs if /tm and /gm options are used. When run, the dump header is printed, and then the program hangs. Unable to close the OS/2 window where the program ran. **************************************************************************** Fixpak CTC305 is Informal Corrective Service * **************************************************************************** FIX/APAR COMPONENT PROBLEM_DESCRIPTION ------------------------------------------------------------------------- AP 60438 BE If the user code contains initialization of SEG16 function pointers, the initialization will be incorrect and the code will trap if the SEG16 functions are called. AP 60854 BE Fix a loop optimization that leads to incorrect array reference in loop when, in rare situation, the loop contains array reference of the form aìi++┘. AP 61311 BE Fix an addressing problem that can lead to a run-time trap if the 'break's in a nest of switch statements leads to a function return. AP 66019 BE Long compile times for the BE when the BE tries to inline and optimize code with a chain of function calls. Problem will appear if /O is used and /Oi is on. AP 66200 BE BE optimizer will go into a infinite loop when compiling code with nested loops. QI 58085 BE Fix BE problem that causes link time error 'unresolved external __EDCThunkProlog' or BE internal compiler error when the /O+ switch is used. QI 63941 BE Fix a run-time trap problem in the try-catch clause when /O+ is used. ------------------------------------------------------------------------- AP 43950 CFE Extraneous EDC0415 warnings being generated for functions declared, but not defined, in the local file scope. AP 45272 CFE The C compiler would give an error message when structures in a ternary expression had the same type but different qualifiers. The compiler will now accept this in extended mode and give a warning in ANSI mode. AP 45547 CFE Invalid informational EDC0422 message was generated when a signed integer variable was compared with unsigned integer constant. AP 47879 CFE An array definition with a corresponding tentative declaration was not picking up all the properties of the tentative declaration when the declaration type-specifier was a typedef symbol. AP 49189 CFE If there were multiple declarations for an inline function, the function would sometimes not be inlined. AP 52098 CFE A precompiled header would not be used if one of the include file paths contained a "./" and the other did not, even though they resolved to the same file. AP 52216 CFE The C compiler would sometimes give an internal compiler error when the /Weff compiler option was used. The compiler will no longer give this error. AP 53275 CFE The C FE was passing the incorrect diagnostic message level to the BE. AP 56827 CFE In extended mode, if C a program contains #define's to define the same macro into different replacements, the compiler was issuing a warning message stating that the macro has been redefined, but was not actually redefining it. The compiler has been changed to actually redefine the macro to the later replacement. Also, the #define in the source code now overrides the /D option in the command line. AP 62628 CFE Invalid informational EDC0421 message was generated when signed integer was compared with -32768. AP 63885 CFE Incorrect message issued under /Wext for unreferenced external variables. QI 55438 CFE In a C program, assigning to one member of a union and using another member of the union to retrieve the value would sometimes give incorrect results with optimization. QI 55692 CFE When compiling certain C programs that includes typecast into pointer to function, internal compiler error occurred. ------------------------------------------------------------------------- QI 43536 ICC When compiling C++ programs with /P turned on, if the tempinc directory already contained any source file, ICC compiler driver went into an infinite loop. QI 47216 ICC When the compiler's messages are re-directed into a file, messages from different components might be re-ordered inadvertently. QI 48884 ICC When compiler is invoked with "icc /O+ /O- a.c", /Oi and /Os options were turned on accidentally. ------------------------------------------------------------------------- AP 48385 ILINK When compiling a user-defined _DLL_InitTerm function with /gl+ and linking it with /optfunc, the error message "error LNK2030: starting address not code (use class "CODE") is generated by the linker. AP 61847 ILINK For OS/2 EXE and DLL files the size limit of the import procedure table was removed. Also the size limit of the entry table was expanded from 64K to 1M. This should reduce linker errors LNK1044 and LNK1074 respectively. QI 58669 ILINK If a user qualifies the stub file name in their .def (definitions) file, the linker will report that the stub file does not exist even if it does exist. ------------------------------------------------------------------------- AP 42832 RT Input conversion of floating point numbers with 20 or more digits may overflow the maximum precision, and rather than losing bits on the right (which is to be expected), the entire number becomes zero. Loosing one bit of precision with some numbers is unavoidable. AP 43377 RT Code page conversions using the iconv() function do not convert double byte characters correctly. AP 46604 RT If a compilation unit references _heap_check() and is linked to the runtime DLL (e.g., using the /Gd+ option with the icc command), there will be an unresolved reference to __theap_check() at link time. AP 48121 RT The C++ compiler incorrectly handles passing objects by value in a var-arg function. The problem is the va_start() macro gets the wrong address when the last non-variable parameter is a class object and is passed by value. AP 52345 RT The following code fragment fails if TEMPMEM=ON is set in the environment. TFile = tmpfile(); fclose(TFile); AP 60824 RT Command line arguments with double byte characters (eg. Kanji characters) may not be parsed correctly. To use double byte characters in the command line arguments, you must link your program with MSETARG.OBJ. If you also use OS/2 global file-name characters (or wildcard characters) in the arguments, then you must link with MSETARGV.OBJ. Both of these object files are included with the libraries in the LIB directory. QI 49365 RT If setlocal() is issued for any of the locales provided with the compiler, then subsequent invocations of tzset() will have no effect. QI 59033 RT The strfmon() function does not format the amount (double) 0.0 when the value of the precision is 0 (eg. %╡#5.0n). The function returns -1 and no value is set in the output array pointed to by the first argument. QI 62091 RT A new library routine _upool() was added to the runtime that allows an application to specify a range of object sizes that will cause heap allocations and frees to perform faster. See the README for further information regarding this new feature. QI 63350 RT %EY format always uses the first era specified in the locale source file regardless of its range. QI 64957 RT An additional Japanese locale is provided. This one is bound to code page 943. ******************************************************************************* Fixpak CTC304 is Informal Corrective Service ******************************************************************************* FIX/APAR COMPONENT PROBLEM_DESCRIPTION ------------------------------------------------------------------------------- QI 35447 ICC Corrected some minor mistakes in the ICC on-line help. AP 47872 ICC Changed ICC to attempt compiling all files when multiple source files are specified through a single invocation. AP 48436 ICC When ICC invokes the linker, the linker options specified through ICC command line option /B are now appended (instead of prepended) to the other linker options generated by ICC. AP 48869 ICC ICC does not properly handle path names specified with a mixture of both forward and backward slashes. AP 54613 ICC ICC was not properly treating tabs as white spaces on the command line. QI 36384 CFE The severity level of C compiler message EDC0499 has been changed from warning to error. QI 37397 CFE The C compiler was not reading the correct source file when outputting assembler statements. As a result the source code did not match the assembler statements in some cases. QI 42420 CFE The C front end did not properly handle DBCS characters in the '#include' path name specifications. QI 42499 CFE The /Xi compiler option had no effect. If the /Xi compiler option was on (/Xi+), the compiler would still search the paths specified in the INCLUDE environment variable. QI 43049 CFE When a listing file was produced with the /Lb option, it did not show the structure maps for unused aggregates. QI 43779 CFE In some cases the packed version of the aggregates were shown in the listing file even though the packed versions were never used. AP 44084 CFE Suppress the extraneous informational message EDC0451 when /Wtrd option is used. QI 45691 CFE When C programs are compiled with /Wrea option, suppress extraneous informational message EDC0520 for programs containing variable declarations within 'switch' blocks. QI 45692 CFE Clarified the message text for C compiler message EDC0483. QI 47688 CFE When compiling programs with /Ti option turned on, if the program contains multiple typedef's defining the same tag into different types an internal compiler error occurred. AP 47793 CFE When a source file, a.c, was used to generate a precompiled header and then a source file, b.c, used the previously generated precompiled header, the debug information in the object file for b.c would indicate that source file name was "a.c" instead of "b.c". This caused the debugger to bring up the a.c source while stepping through code from b.c. This also caused the name in the assembler listing for b.c to be incorrect. AP 47944 CFE For some C programs, the compiler would incorrectly indicate that exported functions were undefined (message EDC0397). AP 48456 CFE Message EDC0368 was changed to an error severity from a warning. QI 48459 CFE Variables defined after a '#pragma dataseg()' were not being placed in the correct data segment. AP 49136 CFE Internal compiler errors when compiling C programs with initialization of zero-length bitfields. QI 49670 CFE The date and time shown in the C listing files are now locale sensitive. AP 50418 CFE Internal compiler errors when compiling certain C programs containing function calls with function pointers that are not prototyped. AP 50423 CFE Internal compiler error when compiling certain C programs containing 'offsetof()' and '&=' in the same statement. AP 51202 CFE Function pointers would be given the default linkage instead of the user specified linkage if they were declared at block scope and the /Ti option was on for C programs. AP 51351 CFE Changed C compiler to allow mixing function prototypes with and without linkage keywords. AP 51400 CFE If a function pointer was used to call a function with variable arguments, the compiler would pass the arguments incorrectly to the function. AP 52186 CFE An enum which could be packed into an unsigned char and whose maximum value was on the boundary of unsigned char (255) would be put into a short instead of a char. Also, enums which could be packed into a signed short and whose maximum value was on the boundary of signed short (32767) would be put into an int instead of a short. AP 52326 CFE When compiling C programs with /Wgen option, suppress the extraneous informational messages EDC0438 about "variable may be used before being set" for external variables. AP 52398 CFE/C++FE When the preprocessor (for both the C and C++ compiler) produces #line directives containing file names, the file names had the same format as the header names. These file names now contain the proper escape sequences for string literals. The preprocessor now interprets the escape sequences, AP 52498 CFE The C compiler incorrectly gave an error when a 16 bit variable argument function is prototyped and called. QI 52703 C++FE The debug information of a Direct-To-SOM class contains the SOM mangled name. AP 55237 CFE If a 16 bit function returned a pointer, the compile would not correctly handle the conversion of the returned value to a 32 bit pointer. This caused the return address to be incorrect. AP 55570 CFE The compiler would abort with an Internal Compiler Error when there was a post-increment on a pointer in an array index expression. QI 56034 CFE Incompatible function redeclarations sometimes cause an Internal Compiler Error. QI 57404 CFE Added the missing line number and column number for C compiler message EDC0221. AP 58941 CFE If a typedef was used to declare an array or a pointer and the typedef name had a pragma seg16 associated with it, the array or the pointer would not be put into the 16-bit segment as expected. AP 40798 C++FE The C++ compiler does not fold the IEEE constants correctly. AP 55238 C++FE An incorrect browser file is generated for functions that have exception specifications. AP 55266 C++FE An incorrect browser file is generated if an expression is specified in a template-argument-list. AP 43515 C++FE Informational messages about the comparison of unsigned integral variables with the constant zero are incorrect. AP 30537 C++FE The qualified type pointers (such as "this" pointer are not converted from a 32 to 16 bit pointers. AP 32432 C++FE If a template class member function is defined outside the class definition, and it makes use of a nested type with a template argument an error message is issued. AP 43431 C++FE The option /ly, which produces a cross-reference table of all variables in the listing file causes a trap in the compiler. AP 55702 C++FE The definition of a constructor or a destructor of a class with an invalid declaration causes a trap in the compiler. AP 50631 C++FE An unnamed pointer to a function that is used as an argument in a function declaration causes a trap in the compiler. AP 45467 C++FE The C++ compiler cannot convert "void *" to an enum type. AP 49097 C++FE The C++ compiler generates an incorrect #pragma define during automatic template instantiation, when the template argument is a scoped enum. AP 45386 C++FE Precompiled headers do not work with #pragma library. AP 49284 C++FE An error message is issued for a member function declaration when a comma is missing from the argument list. AP 49293 C++FE C++ traps on 'new' expression when constructor is ill-formed. AP 46066 C++FE The compiler does not generate the automatic templates if there are partially qualified path names in the include path. AP 51504 C++FE When a Direct-To-Som is attempted with a #pragma SOMAttribute is compiled with /Fb+ option the compiler traps. AP 57891 C++FE The substitution text in error message EDC3217 is not filled in when the predefined macro __32BIT__ is redefined. AP 46077 C++FE The option /Wpar- does not suppress the error message EDC3126 but the option /Wuse- does. AP 53485 C++FE The Visual builder generated code sometimes fails with an "insufficient memory" error message (EDC3088) during compile. QI 41936 C++FE Redeclaration of an external function in a nested block scope of another function creates an invalid object file if the external function is called from the nested as well as the main block scope of the other function. QI 44351 C++FE Incorrect debug information is generated for classes that are different instances of a template when the template argument is used as a base class. All classes appear to be derived from the template argument of the first instantiation. QI 46800 C++FE Anonymous union as the last member of a structure/ class causes initialization problems. QI 52703 C++FE The debug information of a Direct-To-SOM class contains the SOM mangled name. QI 35401 C++FE Intermediate code linker does not work with a function that has __stdcall linkage. QI 38816 C++FE The C++ compiler traps when it cannot create temporary files. QI 41184 C++FE An illegal template member function definition causes trap in the C++ compiler. QI 43373 C++FE The severity level of the message EDC3471 is error and it should be warning. QI 43906 C++FE Option /Fc causes a trap in the C++ compiler if it is used to compiler a program that has #pragma library. QI 44115 C++FE The C++ compiler attempts to load corrupt precompiled header files. QI 45210 C++FE Precompiled header files do not work with #pragma map. QI 48464 C++FE The /Gl option causes a linkage error. QI 52398 C++FE The #line directive does not contain an escape sequence. QI 53640 C++FE Occasionally during C++ exception processing non- volatile registers are corrupted when an exception is rethrown. QI 54583 C++FE The constructor of an object is not called when the option /Gt is used. QI 57919 C++FE The C++ compiler traps when the local directory is on drive Z:. QI 59006 C++FE The use of a template friend function of a template class returning template class as its type causes a trap in the C++ compiler. QI 60483 C++FE The severity level of message EDC3504 is error (SOM) and should be warning. AP 51998 BE Using -O -Oc -G4 or -G5 may cause the program to execute in an incorrect order when returning from function. AP 56644 BE Tiled objects cross the 64K boundary in C code. AP 55592 BE The copyright information destroys the data stored in a global variable. AP 47239 BE During in global register optimization, where the BE tries to use common the registers sometimes causes an internal compiler error. AP 55593 BE A structure with bitfield and volatile members causes an internal compiler error. AP 55720 BE Incorrect optimization involving Flat-Seg16 conversion. AP 55723 BE Two different registers are simultaneously assigned to the same parameter variable during loop optimization, resulting in inconsistent values being used for the parameter variable. AP 49473 BE Incorrect optimization in converting ULONG to LONG. AP 49172 BE Inlining between a divide expression and a mod expression may cause incorrect evaluation of the expressions. AP 53126 BE Errors in the common sub-expression optimization causes a "EDC4005: Error occurred in intermediate file RBEXPR2(558)". AP 53356 BE BE incorrectly to replaces a register reference to a reference constant. AP 45450 BE The flag /Fa fails when a _Far32 _Pascal function pointer is initialized to NULL. AP 58696 BE Using /Fa with a very long class or function name causes internal compiler error. AP 41908 BE The BE mangles the 16 bit callgate address when called through a dynamically loaded callgate. AP 47686 BE Optimization problem caused by the used of goto's inside in a deeply nested switch statements and for statement blocks. AP 50970 BE Incorrect optimization with thunking when integer conversion is involved. AP 51125 BE An optimization problem on max and min macros with short integers in certain situation. AP 51219 BE Incorrect optimization about thunking (see AP-50970). AP 52231 BE Internal compiler error: same as AP-53356 AP 53179 BE Long BE compile time when optimization (/O+) is used when a large number of arithmetic expressions with lots of common sub-expressions are used. AP 56222 BE Optimization with float-int union causes internal compiler error. AP 59504 BE Using /O with both divide and mod expressions caused internal compiler error in certain circumstances (see also AP-49172). AP 57376 BE With /O and /G4, strchr() can overwrite the register. AP 50569 BE Optimization bug: memory is not reloaded for union bit field access. AP 39391 BE BE trap if the argument to __alloca() is a array or structure member reference. AP 42361 BE Incorrect initialization of array of structure. AP 44553 BE With /O+, using sqrt() cause the BE to trap (#5) in rare circumstances. AP 49790 BE Fix an optimization bug with uninitialized register which is used in loop. QI 44449 BE Upper bit not masked off when optimizing ((ULONG)(USHORT)) in certain loop. QI 48046 BE Bad optimization with __lxchg() , incorrect branch behaviour caused by the missing 'test' instruction. QI 49483 BE BE aborts with an intermediate file error in roopt.c AP 36882 ICL Use of ICL cause bad debug info sometimes. AP 43765 ICL Using /Wall in C++ causes ICL to abend with a EDC6005 error AP 50707 ICL Internal compiler error occurs if the sources are listed in specific order AP 51313 ICL Internal compiler error on compiling Info Zip source AP 52105 RT When fgetws is called to read a file, and the file is positioned at the end-of-file, the application becomes deadlocked. This happens only when the application is linked to the multithreaded runtime (/Gm+). AP 46009 RT Multithreaded applications may exhibit "thread starvation", where the threads do not get equal time slices. AP 51536 RT _sopen() does not accept O_RDONLY and O_CREAT together (O_RDONLY | O_CREAT) AP 45665 RT Statically linking the runtime library always brings in the tiled memory support, even though the tiled memory functions are not actually used by the application. This prevents the application from overriding the new/delete operators. AP 43408 RT If the code for a class resides in a DLL, to which is bound a static copy of the runtime, it is impossible to use "new" from any other module to create an object of that class without making a "delete" of that object cause a memory leak. QI 42253 RT The fopen() C standard function cannot open a file whose name include X'5C' in DBCS 2nd byte of the last character. QI 41413 RT _chsize function changes to wrong file size. The problem occurs if the file is opened with the APPEND attribute, and _chsize is trying to grow the file. QI 45561 RT An exception occurs when sprintf is used in an exitlist procedure. QI 46018 ILINK The debugger's "locate function" action will sometimes fail if the code was compiled with "ICC /Gl". QI 47978 ILINK The linker would often give an invalid object error (LNK1101) when CSetV1 debug objects (HLL3) are linked. AP 48278 ILINK When linking a virtual device driver (VDD) specification of a start address generates error LNK4039. AP 48949 ILINK When linking C++ objects, errors are generated about very short names that are not defined or referenced in the user's objects. QI 49093 ILINK Changed the linker option /NOFARCALLTRANSLATION to indicate it is not supported rather than not recognized. QI 49617 ILINK Section marked as SHARED was not being shared. QI 49637 ILINK The linker traps on modules containing an empty #pragma comment(). QI 50432 ILINK The linker was generating a fatal error (invalid library) if the library contained an object that did not define any symbols. AP 50514 ILINK Debugger was displaying wrong lines. QI 51819 ILINK Library paths specified after libraries were not considered 55525 when searching for libraries. QI 52451 ILINK The linker reports that libraries with > 32K of browse data are invalid. AP 53866 ILINK The debugger was improperly disassembling the code at the beginning of some functions because the bytes added for alignment were not single byte instructions. QI 54633 ILINK The message LNK4027 contained some extraneous characters after the symbol name. QI 58793 ILINK Default libraries introduced by a library object were not searched. ******************************************************************************* CSD CTC303 is Informal Corrective Service ******************************************************************************* FIX/APAR COMPONENT PROBLEM_DESCRIPTION ------------------------------------------------------------------------------- QI 52538 C++FE Duplicate VFTs for templates may be generated when compiling with the /Ft- compiler option, causing a "LNK2025: symbol defined more than once" error when linking. ******************************************************************************* CSD CTC302 is Informal Corrective Service ******************************************************************************* FIX/APAR COMPONENT PROBLEM_DESCRIPTION ------------------------------------------------------------------------------- AP 37520 BE Optimizer was generating incorrect code if a for-loop had boundary values that were array or structure elements. AP 37893 BE Intermediate code linker could not handle more than 256 files. QI 40806 BE The back end will sometimes abort if a common bitfield expression is typecasted more than once. QI 41299 BE Changed an optimization that causes "jump-to-location" to fail in the debugger. QI 42359 BE Use of the intermediate code linker could cause an internal compiler error at /O- AP 42366 BE Optimization of tail-calls combined with inlining sometimes resulted in stack corruption. QI 42968 BE Using an inlined member function in loop iteration may cause an optimization problem QI 43250 BE Optimization was generating incorrect code for an array element that stored its own address (a[i] = &a[i]) QI 43878 BE Use of "break" and/or "goto" in a loop could lead to floating point stack overflow if floating point variable are used in a loop at /O+ QI 44739 BE BE hangs if there is unreachable code in which the first statement is a "call" QI 45041 BE BE will hang if the code contains a loop in the internal jump statements QI 45110 BE BE was leaking memory QI 45285 BE Incorrect code was being generated for an enum parameter AP 46031 BE Hoisting code out of a loop during optimization will cause the BE to trap. QI 46781 BE Incorrect code being produced for the pre-increment operator QI 39257 Browser Compiler generates garbage to screen if the output browser file is locked. QI 40067 Browser Bad browse information is generated if a function is used as a default argument for a function parameter. QI 40068 Browser Generating TableLookupERROR and BadOperatorERROR messages QI 42967 Browser Losing some function attributes (e.g. static) if they are in a system include file. QI 45078 Browser Using class C in a template function definition may cause the Browser to trap. QI 39769 C++DTS Attribute get/set parameters are volatile qualified and attribute method names in C++ are incorrectly som mangled. QI 40076 C++DTS The following assert message is generated: assert failed: kind != LOAD_ADDRESS && kind != STORE_VALUE : on 139 : in cbcgcall.cxx.d1 QI 40399 C++DTS Failing to generate compile-time errors indicating that the user should not define the _get/_set routines. QI 41340 C++DTS A local class may be incorrectly declared as a SOM class IX51299 C++FE Internal compiler error with accessing non-static member AP 28445 C++FE The compiler was issuing an incorrect error for the conversion of a pointer to a pointer to member of the same type. A B::* p = &B::a; results in error EDC3055: "A*" cannot be converted to "A B::*" QI 37160 C++FE An incorrect #pragma library was an error in C++, but a warning in C QI 37529 C++FE If the include path was not fully qualified, template files are not always generated. QI 38649 C++FE When /Gt+, tiled memory, was specified variables that were greater than 64K were not being flagged as an error. QI 38656 C++FE If pragma comment is specified with precompiled header files (with /fi /si options) a trap occurs. QI 39240 C++FE Compiler incorrectly handled tempinc when the root directory was on the path QI 39941 C++FE Precompiled headers were trashing the internal copy of the tempinc directory name, resulting in the compiler being unable to open the template files. QI 44076 C++FE Classes with const/ref mems may not be initialized correctly AP 46377 C++FE Manually instantiated templates in DLLs may cause problems with unresolved references to the virtual function table QI 34937 C++IDL IDL generation strips off members from structures, causing the SOM compiler to flag an error QI 37047 C++IDL The SOM compiler crashes when using static member Operator delete() QI 37196 C++IDL The IDL generator fails to generate the dimensions of arrays QI 37359 C++IDL The SOM compiler fails to generate bit-field offsets from the generated IDL QI 37514 C++IDL The IDL generator will no longer generate types defined in other files, as this can cause a conflict in class names. QI 37866 C++IDL Generated .hh from compiler generated IDL may result in unrecognized typenames QI 37868 C++IDL Generated .hh from compiler generated IDL may result in failure to find class definitions. QI 37869 C++IDL Generated .hh from compiler generated IDL may result in union members already defined QI 37991 C++IDL The SOM compiler cannot handle the unnamed classes which may appear in the generated IDL QI 38019 C++IDL SOM compiler flags syntax errors when compiling generated IDL QI 38097 C++IDL Generated IDL does not handle template classes properly QI 38166 C++IDL Miscellaneous syntax errors in the generated IDL QI 38483 C++IDL SOM compiler is stripping off the * in pointers in the generated IDL, causing errors QI 38620 C++IDL Som compiler does not generate initialization of args for nested methods in Generated IDL QI 45521 CFE An _Export qualifer in a function definition has no effect. QI 38458 RT Turkish and Finnish Locales contain English days/months QI 33189 ILINK Change ILINK to detect and ignore equivalent library names on the command line. QI 37428 ILINK Fix ILINK to prevent abends with long file names, and to detect if the MAP and EXE file names are identical. QI 42386 ILINK In some cases the linker would output error LNK5001E (invalid page range) QI 42756 ILINK In some cases the error message L1094 prints a partial file name. The linker was attempting was made to print a wide string. This was changed to convert the wide string to DBCS. QI 43490 ILINK Sometimes specifying /LINENUMBERS on the linker command line causes linker error LNK1101, regardless of whether or not the line number information was actually included in the object with the /Tn or /Ti options. QI 43643 ILINK If the linker exceeds the internal limit on the number of relocations that can be emitted in the run file, it would hang. It now issues an error message and terminates processing. This problem occurs only on very large projects. ******************************************************************************* CSD CTC301 is Informal Corrective Service ******************************************************************************* FIX/APAR COMPONENT PROBLEM_DESCRIPTION ------------------------------------------------------------------------------- QI 37176 ICC Fixes a problem where ICC did not call the intermediate code linker and code generator if the parameter /C is provided on a command line similar to "icc /c x.w y.w" QI 34955 C++FE Read-only data (virtual function tables and some exception handling data) were not being put into CONST class segments and so were not readonly and sharable by default. QI 35634 C++FE Two secondary entry points are being given the same name. This is not a problem unless Smart Linking (/Gl+) is specified. With Smart Linking the linker will flags this as a duplicate symbol and the link fails. QI 36178 C++FE The compiler would die with an exception after generating an EDC3548 message. QI 36268 C++FE The compiler was generating invalid object modules. The problem was caused by secondary entry points in template functions not being overridable. If the owner of the secondary entry point is overridable then the secondary entry point should be as well. QI 36750 C++FE The compiler was generating a class member '__e1' when compiling with SOM. QI 37121 C++FE The compiler was generating the wrong error message when casting class pointers. The type of the class pointer casting operator is its own type rather than its operand's type. QI 37123 C++FE The compiler was getting an exception at EIP = 00105204 after generating message EDC3039 QI 37160 C++FE On an invalid #pragma library, the C++ compiler was treating message EDC3090 as an error. The C compiler was treating the equivalent message EDC0224 as a warning. The message should be only a warning. QI 37272 C++FE C++ compiler was abending at location 00102B47 when doing a SOM compile QI 37383 C++FE Incorrect message warning of a null statement. QI 37646 C++FE The compiler was generating an inappropriate error EDC3618 for pointer to member function in DTS. QI 37888 C++FE Fixes an abend and/or invalid message on a bad destructor definition QI 38137 C++FE The compiler was making a bad decision on whether to emit destructor code or a RET at the end of a block. The result could have been undestructed locals, or an infinite loop if control fell into the exception startup code. QI 38969 C++FE The C++ compiler was treating message EDC3491 (invalid precompiled header format) as an error. The C compiler was (correctly) treating it as a warning. QI 38978 C++FE Compiling som.hh with /Si+ caused the compiler to go into infinite loop QI 39217 C++FE The compile options /Si+ /Ls+ caused a "fatal error EDC0500: Unexpected compiler error #C0000005:822B6 occurred." QI 39944 C++FE Fixes an abend when compiling C++ with a precompiled header QI 40177 C++FE The compiler is generating bad browser files for some DTS compiles. QI 42348 C++FE Fatal Error in compiler front end which may occur when using precompiled headers. QI 35499 C++DTS The compiler was failing to construct a class's meta class before the first object of the class. QI 39752 C++DTS No IDL was being generated under some conditions. The compiler was only checking for templates explicitly instantiated via #pragma define and implicitly instantiated using the prototype class template, but failing to allow specialized template classes. QI 40033 C++DTS Attribute get/set methods were volatile qualified, causing a problem for some users. A new option "qsomvolattr" has been added that will default to true to indicate if attributes should be generated with the volatile qualifier. qnosomvolattr indicates not to use volatile. The new compile option is -yxqnosomvolattr. QI 34330 C++IDL A reintroduced method was being lost in an .hh file QI 34937 C++IDL IDL generation may have stripped members from structures, causing the SOM compiler to flag an error QI 35662 C++IDL The compiler was generating incorrect IDL for code that contained nested types QI 37047 C++IDL The compiler may have crash if there was a static member "Operator delete()" QI 37196 C++IDL The IDL generator was failing to generate the dimensions of array causing subsequent errors. QI 37359 C++IDL SOM compiler was failing to generate correct bit-field offsets QI 37510 C++IDL Fixes a problem with templates and friends when going from C++ to IDL to C++ QI 37514 C++IDL SOM Compiler was causing conflicts with types defined in other files. Types that are implicitly referenced (such as parameter types) will NOT be generated if they are defined in an include file. Instead, the client program will have to include them just like the implementation did. QI 37866 C++IDL DTS was emitting bad IDL on a nested typedef QI 37868 C++IDL SOM compiler generates bad .hh file for some friend declarations QI 37869 C++IDL Anonymous union bitfields were being generated twice in IDL QI 37991 C++IDL DTS compiler was not correctly handling unnamed classes, and generating bad IDL. QI 38019 C++IDL DTS compiler was generating bad IDL if a pointer to an array of an undefined class was a member of another class. QI 38097 C++IDL DTS compiler was not always handling template classes properly QI 38166 C++IDL DTS compiler generating IDL with miscellaneous syntax problems. QI 38483 C++IDL DTS compiler was generating bad IDL. It was stripping off the * in pointers declared in nested classes QI 38620 C++IDL The SOM compiler was generating a bad .hh file, missing the initialization of the arguments for nested methods QI 41444 C++FE Bad PDB file being generated. Browser itself reports an Browser error. QI 37830 C++FE Some small programs caused an Out of Memory exception when CFE reading in a precompiled header. QI 38431 C++FE Using the #line directive with a filename may have caused CFE the compiler to define main() twice QI 38656 C++FE A precompiled header with #pragma comment did not work CFE correctly QI 39498 C++FE The /Fl /FA /Fo compile options caused an "unable to CFE open file" error if used with a 254 character filename QI 42397 C++FE A #line statement was not handled correctly in a CFE precompiled header. QI 36246 CFE The compiler would trap with an exception if #pragma title() or #pragma subtitle() were used. QI 36951 CFE The compiler was generating an extra EDC0524 (_Packed qualifier) message QI 38076 CFE Precompiled headers with only preprocessor directives may have caused problems on subsequent compiles QI 38361 CFE Use of the /Si compile option may have caused a compiler abend at location 1F00D. QI 38648 CFE Compiler would not handle file scoped objects bigger than 64K with /Gt. The compiler will now issue a warning message for all objects that are greater than 64k in size if /Gt is specified. QI 39217 CFE Using the precompiled headers in conjunction with listing options might have caused an exception in the compiler QI 39820 CFE When there were multiple declarations of a symbol, VAC++ was putting the symbol into the data segment that was active during the first declaration. The correct method is to use the segment that is active when the symbol is both defined and initialized. If the symbol is not initialized (a tentative definition) it is put into the segment that applies on its last definition. QI 39866 CFE Function pointers were not always getting the correct calling convention when /Ti was specified. QI 40664 CFE Fixes a problem where some fields in the listing output had spurious values. QI 42160 CFE Compiler would not expand macros nested deeper than 68 levels. QI 42217 CFE If one W-code file was compiled with /Ti+ and another one with /Ti-, when ICL was run to W-code link them together, an erroneous message EDC6010 was issued, complaining about an inconsistency in the /Tn option. QI 43242 CFE When some small precompiled header file were used, the compiler erroneously complained about data in the precompiled header file not having the correct format. QI 43438 CFE Fixes an inconsistency between the documentation and the behaviour of the search order. The user's guide correctly gives the first directory searched for #include "" as the the directory of the source file. The compiler was searching the directory of the file with the #include "" directive. QI 35733 ICL This fix provides support in the intermediate code linker for new intermediate code options. QI 36771 ICL The ICL now also checks for consistency of the /Tn, /Oc and /Gp compile options across files. QI 36894 ICL Inconsistent /Nd options used when compiling to intermediate code caused the intermediate linker to generate an empty default data segment. This could cause subsequent link problems. This situation will now generate an error message. QI 42156 ICL Fixes an unusual condition internal to the intermediate code linker that would cause it to abend. QI 43095 ICL Fixes an error handling bug which caused an exception to occur instead of an EDC6010 msg being generated. QI 43211 ICL Fixes a bug where static signed_bit_fields structure has an incorrect value when the /Ol option is on. QI 35002 BE Fixes an BE bug which incorrectly checked the use-def alias info, causing variables to be assigned in the wrong order QI 35966 BE Fixes a tail-call optimization problem which may result in optimized code not performing as well as in previous releases. QI 37437 BE Corrects an index addressing mode problem which degrades the performance of the generated code QI 37568 BE Corrects a problem that causes a fatal error in the BE (EDC4005). QI 37587 BE Fixes a bug that caused an internal compiler error at /O+ QI 37688 BE Integral promotion was not being done correctly in some expressions containing char or short variables. QI 37693 BE Corrects a bug that caused the BE to go into an infinite loop. QI 37899 BE Corrects an problem with invalid offset in object module fixup subrecords that caused an invalid object module error (LNK1101) in ILINK. QI 37913 BE Parameters may have been passed incorrectly to a function when a structure whose size is 45-47 bytes was passed by value. QI 37937 BE Fixes an invalid offset in some COMDAT records in object modules that could cause an out of memory or invalid object module error in ILINK (LNK1064 or LNK1101). QI 39120 BE Corrects a problem that might cause a trap while BE is removing dead code. QI 40548 BE The BE generated incomplete line number information with /Gl option in certain circumstances. This would affect the completeness of the debug information. QI 42103 BE Fixes an optimization problem that could remove a store incorrectly without considering a parameter register dependency. QI 42341 BE Corrects a const bitfield initialization problem. QI 42662 BE Fixes bad code generation that could lead to the processor flags being in an incorrect state. QI 39255 Munch The LNAMES table was of fixed size, and DDE4MNCH.EXE was overwriting storage past the end. QI 40242 Munch Fixes an internal failure in DDE4MNCH.EXE QI 35082 ILINK External function names exactly 255 characters long were causing ILINK to generate a bad module. QI 35756 ILINK Linker was incorrectly issuing message LNK4026 when a DLL imported a symbol that it defined (a self-imported symbol). QI 35842 ILINK An invalid internal error was generated by linker during page order assignment. QI 36156 ILINK Linker was not generating message LNK4024 if multiple definitions occurred as a result of #pragma export(). QI 36177 ILINK Linker was not generating message LNK4023 if an internal/external name conflict results from #pragma export() and the .DEF file being inconsistent QI 36554 ILINK Linker was generating different DLLs when a .DEF file was used and when the /DLL switch was used. The /DLL switch was generating message LNK4021, and was not sharing the DATA segment. QI 36963 ILINK The linker was incorrectly writing the executable file to the directory from which the first object file was obtained. QI 37475 ILINK Under certain conditions, the computed address of structures whose first initialized field was not the first field of the structure was incorrect. QI 38737 ILINK For DLLs the default is that the data segment is SHARED. If MULTIPLE is specified, this was changed to NONSHARED, and produced warnings. With this fix the warnings are not printed. QI 39073 ILINK Under certain conditions, invalid LNK4001 warnings were being generated by the linker. QI 39221 ILINK Incorrect LNK1101 messages were being generated in some cases when /optfunc was used on objects generated by the version 2.1 compiler. QI 39556 ILINK The /PDD and /VDD options were not causing the device driver header to be initialized correctly by the linker. QI 39569 ILINK The linker could not find files specified with wildcards if they did not exist in the current directory. QI 39631 ILINK Removes a linker-imposed restriction on the maximum number of imports. QI 39635 ILINK Message LNK4096 was incorrectly being emitted when the /DBGPACK option was specified but an input module did not contain debug information. QI 39636 ILINK The linker was warning of no stack segment in a VDD, rather than the reverse QI 41282 ILINK ILINK was generating bad debug information for template functions when the code had been put in a header file. QI 41882 ILINK In some circumstances, the linker was creating incomplete debug information for C++ template functions. QI 39659 RT The _heap_check() library function has been enhanced to check non-debug heap objects QI 40950 RT Functions have been added to the runtime library to allow user OS/2 exception handlers that will process exceptions before the runtime exception handlers. The functions are prototyped in stdlib.h. The functions are as follows: int _eh_add(_EH_RTN *); This function will add a function pointer to a list of OS/2 exception handlers that will be called by the runtime exception handler when an OS/2 exception occurs. The handlers will be chained within the library and called in a LIFO manner. A non-zero return code indicates an error has occured. int _eh_del(_EH_RTN *); This function will remove the function pointer from the list of exception handlers that the library maintains. A non-zero return code indicates an error has occured. QI 40971 RT There was a highly intermittent bug in multithread library semaphore code which would cause a lockup at runtime. QI 41114 RT The runtime library function printf() formatting failed for integral conversions when the argument was 0 and the specified precision was 0. No output was produced. QI 41305 RT The access() and stat() library functions did not operate correctly if there were no more file handles available. QI 38482 RT To allow easier migration, the realloc() library function will now re-use the same storage where that is possible. WARNING: This is provided as a convenience only; new code should not depend on it, as this behaviour is not guranteed by the function definition! QI 42129 RT The library function mbrtowc() was incorrectly returning -1 with DBCS strings ******************************************************************************* Key to components: BE - Code generator and optimizer Browser - C++ Class browser ICC - Compiler control program CFE - C compiler parser C++DTS - C++ direct-to-SOM compiler C++FE - C++ compiler parser C++IDL - C++ compiler IDL generator C++RT - C++ runtime library Munch - DDE4MNCH program used for automatic template instatiation ICL - Intermediate code linker ILINK - Object code Linker RT - C runtime Library