Fixed bug 4843 - Passing NULL to memset in SDL_PrivateLoadButtonMapping

(Thanks!)
libsdl-org · Oct 23, 2019 · 0f871c0 · 0f871c0
1 parent ed469fa
commit 0f871c0
Showing 1 changed file with 3 additions and 1 deletion.
diff --git a/src/joystick/SDL_gamecontroller.c b/src/joystick/SDL_gamecontroller.c
@@ -691,7 +691,9 @@ static void SDL_PrivateLoadButtonMapping(SDL_GameController *gamecontroller, con
 
     gamecontroller->name = pchName;
     gamecontroller->num_bindings = 0;
-    SDL_memset(gamecontroller->last_match_axis, 0, gamecontroller->joystick->naxes * sizeof(*gamecontroller->last_match_axis));
+    if (gamecontroller->joystick->naxes) {
+        SDL_memset(gamecontroller->last_match_axis, 0, gamecontroller->joystick->naxes * sizeof(*gamecontroller->last_match_axis));
+    }
 
     SDL_PrivateGameControllerParseControllerConfigString(gamecontroller, pchMapping);