From: Torbjörn SVENSSON <torbjorn.svensson@foss.st.com>
Date: Thu, 26 Mar 2026 18:02:16 +0000 (+0100)
Subject: gcov: return failure if malloc fails
X-Git-Tag: basepoints/gcc-17~144
X-Git-Url: http://git.ipfire.org/gitweb.cgi?a=commitdiff_plain;h=496cfc4897ef0e7f879409e7ab68c011f526ef5d;p=thirdparty%2Fgcc.git

gcov: return failure if malloc fails

Don't assume that malloc always returns a non-null pointer.

xmalloc is sometimes an alias for malloc due to this in libgcc/libgcov.h:

  /* work around the poisoned malloc/calloc in system.h.  */
  #ifndef xmalloc
  #define xmalloc malloc
  #endif

libgcc/ChangeLog:

	* libgcov-driver-system.c (gcov_exit_open_gcda_file): Handle
	potential NULL value from malloc.

Signed-off-by: Torbjörn SVENSSON <torbjorn.svensson@foss.st.com>
---

diff --git a/libgcc/libgcov-driver-system.c b/libgcc/libgcov-driver-system.c
index 7b20b29bebf..0991bb57db6 100644
--- a/libgcc/libgcov-driver-system.c
+++ b/libgcc/libgcov-driver-system.c
@@ -301,6 +301,11 @@ gcov_exit_open_gcda_file (struct gcov_info *gi_ptr,
 
   size_t prefix_length = gf->prefix ? strlen (gf->prefix) : 0;
   gf->filename = (char *) xmalloc (prefix_length + strlen (fname) + 2);
+  if (!gf->filename)
+    {
+      fprintf (stderr, "profiling:Failed to allocate memory for filename");
+      return -1;
+    }
   *gf->filename = '\0';
   if (prefix_length)
     strcat (gf->filename, gf->prefix);