Mercurial > hg > octave-nkf > gnulib-hg

comparison lib/getugroups.c @ 9703:e29f811d31c0

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
Don't rely on signed integer overflowing to negative value. * lib/getugroups.c (getugroups): Include <limits.h>. Instead, compare against INT_MAX, and increment only if the test passes.
author Lasse Collin <lasse.collin@tukaani.org>
date Wed, 23 Jan 2008 17:48:40 +0100
parents bbbbbf4cd1c5
children 85800f596ad2
comparison
equal deleted inserted replaced
9702:11e548fe7d73 9703:e29f811d31c0
19 19
20 #include <config.h> 20 #include <config.h>
21 21
22 #include "getugroups.h" 22 #include "getugroups.h"
23 23
24 #include <limits.h>
24 #include <stdio.h> /* grp.h on alpha OSF1 V2.0 uses "FILE *". */ 25 #include <stdio.h> /* grp.h on alpha OSF1 V2.0 uses "FILE *". */
25 #include <grp.h> 26 #include <grp.h>
26 27
27 #include <unistd.h> 28 #include <unistd.h>
28 29
90 { 91 {
91 if (count >= maxcount) 92 if (count >= maxcount)
92 goto done; 93 goto done;
93 grouplist[count] = grp->gr_gid; 94 grouplist[count] = grp->gr_gid;
94 } 95 }
95 count++; 96 if (count == INT_MAX)
96 if (count < 0)
97 { 97 {
98 errno = EOVERFLOW; 98 errno = EOVERFLOW;
99 goto done; 99 goto done;
100 } 100 }
101 count++;
101 } 102 }
102 } 103 }
103 } 104 }
104 105
105 if (errno != 0) 106 if (errno != 0)