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/ SGI Varsity Update 1998 August / SGI Varsity Update 1998 August.iso / docs6.4 / relnotes / ftn77_fe / ch6.z / ch6
Text File  |  1998-07-29  |  14KB  |  462 lines
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  4.                                                - 1 -
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  8.                     7.2.1 Fortran 77 Front-End Release Notes
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  69.                                                - 2 -
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  73.                     DDDDooooccccuuuummmmeeeennnntttt NNNNuuuummmmbbbbeeeerrrr 000000007777----1111666655559999----000011110000
  74.  
  75.  
  76.                     6.  _B_u_g__F_i_x_e_s
  77.  
  78.                     This chapter briefly describes the bugs that
  79.                     have been fixed in the compiler since release
  80.                     7.1.  Some of the headings are followed by a
  81.                     Silicon Graphics incident report number.
  82.  
  83.  
  84.                     6.1  _B_u_g__F_i_x_e_s__I_n__M_I_P_S_p_r_o__7_._2_._1
  85.  
  86.                        +o Fortran datapools cause core dump on O2
  87.                          machines with the R5000.
  88.  
  89.                          An application would run correctly on O2
  90.                          machines with the R10000, but fail on O2's
  91.                          running with R5000's. The symptom would
  92.                          appear as:
  93.  
  94.                          $ ./testdp
  95.                          map_datapool: trouble sharing /usr/tmp/DP_hello at address 5FDB2000
  96.                          map_datapool (mmap): Invalid argument
  97.                          Abort (core dumped)
  98.  
  99.                          The mmap system call has some restrictions
  100.                          which were not being satisfied by the
  101.                          datapool implementation. The workaround was
  102.                          to allow the user to specify a datapool pad
  103.                          size through a new command line option
  104.                          -FE:datapool_pad. When this option is used
  105.                          a new entry point in the library is called
  106.                          to mmap the datapool. The runtimes from
  107.                          patch 2759 are required for this workaround
  108.                          (Bug #517508).
  109.  
  110.  
  111.                        +o Intrinsic len broken when -i2 -n32 used
  112.  
  113.                          With the 7.2 compilers, compiling this code
  114.                          with -i2 -n32 gives declaration conflicts
  115.                          on intrinsic LEN function.
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  135.                                                - 3 -
  136.  
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  138.  
  139.                          %cat foo.f
  140.                                  INTEGER*2 LEN
  141.                                  INTRINSIC LEN
  142.                                  CALL SUB(LEN('ABC'))
  143.                                  END
  144.                                  SUBROUTINE SUB(I)
  145.                                  INTEGER*2 I
  146.                                  PRINT *,I
  147.                                  END
  148.  
  149.                          %f77 -i2 -n32 foo.f
  150.  
  151.                          "foo.f", line 2: error(2085): declaration conflicts with previous
  152.                                    specifications
  153.                                    INTRINSIC LEN
  154.                                              ^
  155.                          1 error detected in the compilation of "foo.f".
  156.  
  157.                          This has been fixed (Bug #527165).
  158.  
  159.  
  160.                        +o -i2 broken with -n32 or -64
  161.  
  162.                          Compiling the following program with -i2
  163.                          under -n32 or -64 would result in an error:
  164.  
  165.  
  166.                          $ cat tst.f
  167.                                REAL*4 A(96000)
  168.                                REAL*4 B(32000)
  169.                                EQUIVALENCE (B,A(64001))
  170.                                PRINT *,A(1),B(1)
  171.                                END
  172.                          $ f77 -i2 -n32 tst.f
  173.                          "tst.f", line 3: warning(2057): integer conversion resulted in
  174.                          truncation
  175.                                  EQUIVALENCE (B,A(64001))
  176.                          "tst.f", line 3: error(2134): subscript out of range
  177.                                  EQUIVALENCE (B,A(64001))
  178.  
  179.  
  180.                          This has been fixed (Bug #559245).
  181.  
  182.  
  183.                        +o Compilation failures when using -craylibs.
  184.  
  185.                          The following program would cause a compile
  186.                          time abort when using the -craylibs option:
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  201.                                                - 4 -
  202.  
  203.  
  204.  
  205.                          %cat readkk.f
  206.                                SUBROUTINE READKK(A,NDIME,NU)                                     READKK 2
  207.                                IMPLICIT REAL*8(A-H,O-Z)                                          READKK 3
  208.                                DIMENSION A(NDIME,NDIME)                                          READKK 4
  209.                                READ (NU) A                                                       READKK 5
  210.                                RETURN                                                            READKK 6
  211.                                END                                                               READKK 7
  212.  
  213.                          %f77 -c -O3 -craylibs readkk.f
  214.                          Signal: Segmentation fault in Global Optimization -- Mainopt Lowering phase.
  215.                          Error: Signal Segmentation fault in phase Global Optimization -- Mainopt
  216.                          Lowering -- processing aborted
  217.  
  218.                          This has been fixed (Bug #576655, #538635)
  219.  
  220.  
  221.                        +o Bus Error when compiling with -IPA
  222.  
  223.                          Compiling a program that contains an
  224.                          initialization of an element of a COMMON
  225.                          block would abort with a bus error in the
  226.                          compiler if the program linked with a
  227.                          shared object that contains a declaration
  228.                          of the same COMMON block and the
  229.                          compilation was done with the ----IIIIPPPPAAAA option.
  230.                          This has been fixed (Bug #521139).
  231.  
  232.  
  233.                        +o Limit on number of files which could be
  234.                          compiled from one f77 command line when
  235.                          floating licenses were used
  236.  
  237.                          The Fortran 77 compiler would stop and
  238.                          issue the following warnings when trying to
  239.                          compile more files than the open file
  240.                          descriptor limit on a single command line
  241.                          under floating licensing.
  242.  
  243.                          For Example:
  244.                             (Floating Licenses being used)
  245.  
  246.                          %limit descriptors
  247.                          descriptors     200
  248.  
  249.                          %f77  *.f          (more than 200 .f files in current directory)
  250.                          file196.f:
  251.                          cc: Error: can't create output file: /tmp/ctmpa001YG
  252.                             : Too many open files
  253.  
  254.  
  255.                          This has been fixed (Bug #556876).
  256.  
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  267.                                                - 5 -
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  270.  
  271.                     6.2  _B_u_g__F_i_x_e_s__I_n__M_I_P_S_p_r_o__7_._2
  272.  
  273.                        +o Very slow compilation of Fortran file.
  274.                          Under certain circumstances, the
  275.                          compilation of a certain Fortran source
  276.                          code file would take approximately 45
  277.                          minutes to compile.
  278.                          This has been fixed (Bug #475298).
  279.  
  280.                        +o Datapool: padding between datapool elements
  281.                          Datapool items were always aligned on
  282.                          doubleword boundary, regardless of their
  283.                          types.  This has been fixed so that they
  284.                          are aligned according to the type of each
  285.                          item. (Bug #453040).
  286.  
  287.                        +o Compiler coredumps when compiling with -32
  288.                          -g option.
  289.                          Under certain circumstances, the compiler
  290.                          would dump core when compiling files -32
  291.                          -g.  This has been fixed.  (Bug #372302)
  292.  
  293.                        +o Namelist I/O problem
  294.                          Fixed the problem in namelist I/O which
  295.                          resulted in the error "variable not in
  296.                          namelist" (Bug #359690)
  297.  
  298.                        +o Structures misalignemnt
  299.                          Fixed a problem where structures were not
  300.                          aligned properly and caused a bus error.
  301.                          (Bug #443526)
  302.  
  303.                        +o Rejecting -p flag
  304.                          The following code would core dump when
  305.                          compiled with -p.
  306.  
  307.                          a = 1.0
  308.                          b = 2.0
  309.                          c = matmul(a,b)
  310.                          print *, c
  311.                          stop
  312.                          end
  313.  
  314.                          As -p is no longer supported; the user
  315.                          should use ssrun -pcsamp, etc. to do pc-
  316.                          sampling.  The compiler was changed to
  317.                          reject -p with a warning.  (Bug #444089)
  318.  
  319.                        +o f77 -n32 causes problems reading
  320.                          unformatted files
  321.                          Under certain circumstances programs
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  333.                                                - 6 -
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  336.  
  337.                          compiled -n32 would have problems reading
  338.                          unformatted files.  This has been fixed.
  339.                          (Bug #454102)
  340.  
  341.                        +o n32/64  f77 compilers do not accept
  342.                          -NCxxxx, xxxx>1000
  343.                          Code with more than 1000 continuation lines
  344.                          would get an error similar to the
  345.                          following:
  346.  
  347.                          Command-line error(2414): Invalid number of continuation lines in -NC
  348.  
  349.                          This has been fixed.  (Bug #461738)
  350.  
  351.                        +o f77 structure alignment problem when using
  352.                          -32 compiler option, bus error
  353.                          This has been fixed.  (Bug #468837)
  354.  
  355.                        +o f77 unformatted write with negative implied
  356.                          do fails
  357.                          The following code fragment would not be
  358.                          compiled correctly:
  359.  
  360.                          c
  361.                          c  This does not work when using f77 -mips4
  362.                          c
  363.                                  open(11,file='file1.dat',form='unformatted')
  364.                                  write(11) imax,1,1
  365.                                  write(11) (xt(i),i=imax,1,-1),
  366.                               &          (yt(i),i=imax,1,-1),
  367.                               &          (zt(i),i=imax,1,-1)
  368.                                  close(11)
  369.                          c
  370.  
  371.                          This has been fixed.  (Bug #468899)
  372.  
  373.                        +o f77: compiler error: can't find local for
  374.                          idn = 10, offset = 40
  375.                          The following code would not be compiled
  376.                          correctly -static -g -c:
  377.  
  378.                                  SUBROUTINE MAPCRV (XMAP, NPARRA, DATSTR, ERR)
  379.                                  CHARACTER DATSTR*(*)
  380.                                  GO TO 10
  381.                                  ENTRY MAPSYM (XMAP, NPARRA, ISYM, KOLREF, HTSYM, SYMANG, XLTABL, N
  382.                               +  LTABL, DATSTR, ERR)
  383.  
  384.                             10   CONTINUE
  385.                                  RETURN
  386.                                  END
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  399.                                                - 7 -
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  402.  
  403.                          This has been fixed.  (Bug #469034)
  404.  
  405.                        +o Assertion failure with -r8 -O3 during LNO
  406.                          phase
  407.                          Under certain circumstances, an f77
  408.                          compilation would abort with the following
  409.                          error message:
  410.  
  411.                          ### Assertion failure at line 270 of ../../be/lno/snl_trans.cxx:
  412.                          ### Compiler Error in file foo1.f during Loop Nest Optimizer phase:
  413.                          ### Projection failed!
  414.                          f77 INTERNAL ERROR:  /usr/lib32/cmplrs/be returned non-zero status 1
  415.  
  416.                          This has been fixed.  (Bug #473750).
  417.  
  418.  
  419.                        +o f77 -64 fails on close of non-existent file
  420.                          Closing a non-existent file causes error
  421.                          when the executable was compiled with the
  422.                          "-64" option.  This has been fixed.  (Bug
  423.                          #477232)
  424.  
  425.  
  426.                        +o mfef77 core dumps with undefined variable
  427.                          When compiling incorrect code with -n32
  428.                          option, in which an array has no type
  429.                          declaration, /usr/lib32/cmplrs/mfef77 would
  430.                          core dump.  This has been fixed.  (Bug
  431.                          #492186)
  432.  
  433.  
  434.                        +o Optimization -O3 gives wrong result in f77
  435.                          version 7.1
  436.                          Under a certain condition using -O3 in
  437.                          conjunction with f77 -n32 would produce a
  438.                          program which gives incorrect results.
  439.                          This has been fixed.  (Bug #517093)
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