From: Bruno Haible <bruno@clisp.org>
Date: Fri, 2 Jun 2023 23:22:53 +0000 (+0200)
Subject: libgrep: Don't crash upon out-of-memory.
X-Git-Tag: v0.22~70
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=45318a260ec29ea6d785ca4f3bd72f11345415d3;p=thirdparty%2Fgettext.git

libgrep: Don't crash upon out-of-memory.

Pinpointed by gcc 13 warning:
warning: use of possibly-NULL ‘mb_properties’ where non-null expected [CWE-690] [-Wanalyzer-possible-null-argument]

* gettext-tools/libgrep/m-fgrep.c (check_multibyte_string): Check the malloc()
return value.
---

diff --git a/gettext-tools/libgrep/m-fgrep.c b/gettext-tools/libgrep/m-fgrep.c
index 3589675ba..6ae822f6a 100644
--- a/gettext-tools/libgrep/m-fgrep.c
+++ b/gettext-tools/libgrep/m-fgrep.c
@@ -112,10 +112,14 @@ Fcompile (const char *pattern, size_t pattern_size,
 static char*
 check_multibyte_string (const char *buf, size_t buf_size)
 {
-  char *mb_properties = (char *) malloc (buf_size);
+  char *mb_properties;
   mbstate_t cur_state;
   int i;
 
+  mb_properties = (char *) malloc (buf_size);
+  if (mb_properties == NULL)
+    error (exit_failure, 0, _("memory exhausted"));
+
   memset (&cur_state, 0, sizeof (mbstate_t));
   memset (mb_properties, 0, sizeof (char) * buf_size);
   for (i = 0; i < buf_size ;)