about summary refs log tree commit diff
path: root/src
diff options
context:
space:
mode:
Diffstat (limited to 'src')
-rw-r--r--src/passwd/getgrouplist.c3
1 files changed, 2 insertions, 1 deletions
diff --git a/src/passwd/getgrouplist.c b/src/passwd/getgrouplist.c
index 43e51824..301824ce 100644
--- a/src/passwd/getgrouplist.c
+++ b/src/passwd/getgrouplist.c
@@ -31,7 +31,8 @@ int getgrouplist(const char *user, gid_t gid, gid_t *groups, int *ngroups)
 	if (resp[INITGRFOUND]) {
 		nscdbuf = calloc(resp[INITGRNGRPS], sizeof(uint32_t));
 		if (!nscdbuf) goto cleanup;
-		if (!fread(nscdbuf, sizeof(*nscdbuf)*resp[INITGRNGRPS], 1, f)) {
+		size_t nbytes = sizeof(*nscdbuf)*resp[INITGRNGRPS];
+		if (nbytes && !fread(nscdbuf, nbytes, 1, f)) {
 			if (!ferror(f)) errno = EIO;
 			goto cleanup;
 		}