From: Bruno Haible <bruno@clisp.org>
Date: Fri, 30 Apr 2021 23:13:47 +0000 (+0200)
Subject: immutable: Fix crash when immmalloc() fails.
X-Git-Tag: v1.0~2909
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=6d4fe2e29dae811c480dbb5f10701940f8c7e853;p=thirdparty%2Fgnulib.git

immutable: Fix crash when immmalloc() fails.

Found by GCC 11 '-fanalyzer'.

* lib/immutable.c (immstrdup): Don't crash when immmalloc() fails.
---

diff --git a/ChangeLog b/ChangeLog
index cb2c68df68..3173be96df 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,9 @@
+2021-04-30  Bruno Haible  <bruno@clisp.org>
+
+	immutable: Fix crash when immmalloc() fails.
+	Found by GCC 11 '-fanalyzer'.
+	* lib/immutable.c (immstrdup): Don't crash when immmalloc() fails.
+
 2021-04-30  Bruno Haible  <bruno@clisp.org>
 
 	supersede: Fix crash when malloc() fails.
diff --git a/lib/immutable.c b/lib/immutable.c
index 35f73978f2..e4f3825352 100644
--- a/lib/immutable.c
+++ b/lib/immutable.c
@@ -330,6 +330,8 @@ immstrdup (const char *string)
 {
   size_t size = strlen (string) + 1;
   void *wp = immmalloc (size);
+  if (wp == NULL)
+    return NULL;
   memcpy (wp, string, size);
   return (const char *) immfreeze (wp);
 }