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allow freeing of NULL pointer to behave like standard free() function

The memory functions provided to openssl needs to behave like standard
memory functions, i.e. free(). Therefore, ser_free must accept NULL
pointers, see: http://openssl.6102.n7.nabble.com/Custom-free-routine-is-invoked-with-NULL-argument-in-openssl-1-0-1-td25937.html
As shm_free() aborts on null pointers, we have to check for null pointer
here in the wrapper function.

Klaus Darilion authored on 07/11/2012 13:55:55
Showing 1 changed files

modules/tls/tls_init.c

History View file @ 7c37f8d4dc

@@ -295,7 +295,15 @@ static void* ser_realloc(void *ptr, size_t size)
                      static void ser_free(void *ptr)
+                     {
                     -	shm_free(ptr);
                     +	/* The memory functions provided to openssl needs to behave like standard
                     +	 * memory functions, i.e. free(). Therefore, ser_free must accept NULL
                     +	 * pointers, see: http://openssl.6102.n7.nabble.com/Custom-free-routine-is-invoked-with-NULL-argument-in-openssl-1-0-1-td25937.html
                     +	 * As shm_free() aborts on null pointers, we have to check for null pointer
                     +	 * here in the wrapper function.
                     +	 */
                     +	if (ptr) {
                     +		shm_free(ptr);
                     +	}
+                     }