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-rw-r--r--grp/fgetgrent_r.c15
1 files changed, 12 insertions, 3 deletions
diff --git a/grp/fgetgrent_r.c b/grp/fgetgrent_r.c
index dd74cfcd70..44298c5ba6 100644
--- a/grp/fgetgrent_r.c
+++ b/grp/fgetgrent_r.c
@@ -1,4 +1,4 @@
-/* Copyright (C) 1991, 1996 Free Software Foundation, Inc.
+/* Copyright (C) 1991, 1996, 1997 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
@@ -56,6 +56,7 @@ __fgetgrent_r (FILE *stream, struct group *resbuf, char *buffer, size_t buflen,
struct group **result)
{
char *p;
+ int parse_result;
do
{
@@ -69,10 +70,18 @@ __fgetgrent_r (FILE *stream, struct group *resbuf, char *buffer, size_t buflen,
/* Skip leading blanks. */
while (isspace (*p))
++p;
- } while (*p == '\0' || *p == '#' || /* Ignore empty and comment lines. */
+ } while (*p == '\0' || *p == '#' /* Ignore empty and comment lines. */
/* Parse the line. If it is invalid, loop to
get the next line of the file to parse. */
- ! parse_line (p, resbuf, (void *) buffer, buflen));
+ || ! (parse_result = parse_line (p, resbuf,
+ (void *) buffer, buflen)));
+
+ if (parse_result == -1)
+ {
+ /* The parser ran out of space. */
+ *result = NULL;
+ return errno;
+ }
*result = resbuf;
return 0;