Compiling a testdir with CC="gcc -fanalyzer" produced this warning:
../../gllib/immutable.c:333:3: warning: use of NULL 'wp' where non-null expected [CWE-476] [-Wanalyzer-null-argument] 2021-04-30 Bruno Haible <[email protected]> immutable: Fix crash when immmalloc() fails. Found by GCC 11 '-fanalyzer'. * lib/immutable.c (immstrdup): Don't crash when immmalloc() fails. diff --git a/lib/immutable.c b/lib/immutable.c index 35f7397..e4f3825 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); }
