process.c.diff   [plain text]

--- process.c.old	2010-03-30 20:13:41.000000000 -0700
+++ process.c	2010-03-30 21:10:07.000000000 -0700
@@ -2579,7 +2579,7 @@
 }
 
 
-static size_t maxgroups = 32;
+static size_t maxgroups = NGROUPS_MAX;
 
 
 /*
@@ -2602,12 +2602,18 @@
     rb_gid_t *groups;
     int i;
 
-    groups = ALLOCA_N(rb_gid_t, maxgroups);
+    ngroups = getgroups(0, NULL);
+    if (ngroups == -1)
+	rb_sys_fail(0);
 
-    ngroups = getgroups(maxgroups, groups);
+    groups = ALLOCA_N(rb_gid_t, ngroups);
+    ngroups = getgroups(ngroups, groups);
     if (ngroups == -1)
 	rb_sys_fail(0);
 
+    if (ngroups > maxgroups)
+	ngroups = maxgroups;
+
     ary = rb_ary_new();
     for (i = 0; i < ngroups; i++)
 	rb_ary_push(ary, INT2NUM(groups[i]));