small robustness improvement

avoid that setPaletteColors() overruns buffer limits
atuline · Mar 16, 2023 · f633ca3 · f633ca3
1 parent 3f4d1a6
commit f633ca3
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/wled00/json.cpp b/wled00/json.cpp
@@ -904,7 +904,7 @@ void serializePalettes(JsonObject root, AsyncWebServerRequest* request)
         if (i < 13) {
           break;
         }
-        byte tcp[72];
+        byte tcp[76] = { 255 };   // WLEDSR bugfix (ensure last entry is always a "stop" marker)
         memcpy_P(tcp, (byte*)pgm_read_dword(&(gGradientPalettes[i - 13])), 72);
         setPaletteColors(curPalette, tcp);
         break;