Mercurial > hg > octave-shane > gnulib-hg
diff lib/getgroups.c @ 4795:ac6111c4f643
Include <errno.h>, <stdlib.h>.
(getgroups): First arg is int, not size_t.
Don't let 'free' mangle errno.
author | Paul Eggert <eggert@cs.ucla.edu> |
---|---|
date | Thu, 16 Oct 2003 07:30:56 +0000 (2003-10-16) |
parents | 66dca1409f3e |
children | b3e190d8e109 |
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--- a/lib/getgroups.c +++ b/lib/getgroups.c @@ -20,6 +20,8 @@ #include <config.h> #include <stdio.h> #include <sys/types.h> +#include <errno.h> +#include <stdlib.h> #include "xalloc.h" @@ -29,10 +31,11 @@ provided function handle all others. */ int -getgroups (size_t n, GETGROUPS_T *group) +getgroups (int n, GETGROUPS_T *group) { int n_groups; GETGROUPS_T *gbuf; + int saved_errno; #undef getgroups @@ -43,6 +46,9 @@ gbuf = NULL; while (1) { + /* No need to worry about address arithmetic overflow here, + since the ancient systems that we're running on have low + limits on the number of secondary groups. */ gbuf = xrealloc (gbuf, n * sizeof (GETGROUPS_T)); n_groups = getgroups (n, gbuf); if (n_groups < n) @@ -50,7 +56,9 @@ n += 10; } + saved_errno = errno; free (gbuf); + errno = saved_errno; return n_groups; }