From 25391fe765f72c0c079f5589afc717bb8fed25a8 Mon Sep 17 00:00:00 2001
From: Frank <91616163+softhack007@users.noreply.github.com>
Date: Fri, 7 Nov 2025 00:11:14 +0100
Subject: [PATCH] try to catch / handle Gif decoder OOM gracefully

... by adding an exception handler that will catch OOM inside decoder.alloc().
not tested yet.
---
 wled00/image_loader.cpp | 11 +++++++++++
 1 file changed, 11 insertions(+)

diff --git a/wled00/image_loader.cpp b/wled00/image_loader.cpp
index 5ba7af0a..6ad0dc2d 100644
--- a/wled00/image_loader.cpp
+++ b/wled00/image_loader.cpp
@@ -131,7 +131,18 @@ byte renderImageToSegment(Segment &seg) {
     decoder.setFileReadCallback(fileReadCallback);
     decoder.setFileReadBlockCallback(fileReadBlockCallback);
     decoder.setFileSizeCallback(fileSizeCallback);
+#if __cpp_exceptions // use exception handler if we can (some targets don't support exceptions)
+    try {            
+#endif
     decoder.alloc(); // WLEDMM this function may throw out-of memory and cause a crash
+#if __cpp_exceptions
+    } catch (...) {  // if we arrive here, the decoder has thrown an OOM exception
+      gifDecodeFailed = true;
+      errorFlag = ERR_NORAM_PX;
+      USER_PRINTLN("\nGIF decoder out of memory. I'm going to shoot myself now.\n");
+      return IMAGE_ERROR_DECODER_ALLOC;
+    }
+#endif
 
     DEBUG_PRINTLN(F("Starting decoding"));
     int derr = 0;