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- Submitted-by: ro@thp.uni-koeln.de (Rainer Orth)
-
- Recently while working on the command sources of Andy Tanenbaums Minix 1.6
- (currently in beta and trying to become fully P1003.1 and .2 compatible),
- there appeared the question whether code like
-
- #include <pwd.h>
-
- int main (void)
- {
- }
-
- is required to work in a strictly conforming POSIX.1 implementation with
- Standard C Bindings.
-
- The problem is as follows:
-
- <pwd.h> contains a prototype for struct passwd *getpwuid (uid_t)
- and doesn't include <sys/types.h> by itself. I'm not shure if the
- above program needs to #include <sys/types.h> itself or <pwd.h> is
- wrong. From P1003.1-1988 <sys/types.h> needs to be included only if
- the program uses getpwuid().
-
- The same problem occurs in several other headers: e.g. <signal.h>, <grp.h>,
- <unistd.h>, <sys/wait.h>.
-
- Does P1003.1-1990 specify the correct behaviour?
-
- Rainer
- --
- -----------------------------------------------------------------------------
- Rainer Orth, Institute of Theoretical Physics, University of Cologne
-
- Internet: ro@thp.Uni-Koeln.DE
-
- Volume-Number: Volume 23, Number 65
-
-