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author | Ludovic Courtès <ludo@gnu.org> | 2013-02-16 18:40:39 +0100 |
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committer | Ludovic Courtès <ludo@gnu.org> | 2013-02-16 18:41:15 +0100 |
commit | 3d2b2676e3fc0a5b243b8a4188d07bba1b4b40a4 (patch) | |
tree | d6a74695a759f5a82fefb8afcac8b737d843718a /libguile/posix.c | |
parent | 91c763ee3f195dc0e26339608da01250d6924009 (diff) | |
download | guile-3d2b2676e3fc0a5b243b8a4188d07bba1b4b40a4.tar.gz |
Fix `getgroups' for when zero supplementary group IDs exist.
* libguile/posix.c (scm_getgroups): Return the empty vector when NGROUPS
is zero. Reported by Mike Gran <spk121@yahoo.com>.
Diffstat (limited to 'libguile/posix.c')
-rw-r--r-- | libguile/posix.c | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/libguile/posix.c b/libguile/posix.c index 324f21b78..39661a0f6 100644 --- a/libguile/posix.c +++ b/libguile/posix.c @@ -265,8 +265,10 @@ SCM_DEFINE (scm_getgroups, "getgroups", 0, 0, 0, GETGROUPS_T *groups; ngroups = getgroups (0, NULL); - if (ngroups <= 0) + if (ngroups < 0) SCM_SYSERROR; + else if (ngroups == 0) + return scm_c_make_vector (0, SCM_BOOL_F); size = ngroups * sizeof (GETGROUPS_T); groups = scm_malloc (size); |