From 211031e4f4d6a31a16e01b83dacbb2f5c08c1bcf Mon Sep 17 00:00:00 2001
From: Idan Horowitz <idan.horowitz@gmail.com>
Date: Tue, 16 Mar 2021 19:45:54 +0200
Subject: [PATCH] LibGfx: Fail gracefuly on invalid interlace method in
 PNGLoader

This fixes https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=29791
---
 Userland/Libraries/LibGfx/PNGLoader.cpp | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/Userland/Libraries/LibGfx/PNGLoader.cpp b/Userland/Libraries/LibGfx/PNGLoader.cpp
index 94d57c0bde..0699ebc9d2 100644
--- a/Userland/Libraries/LibGfx/PNGLoader.cpp
+++ b/Userland/Libraries/LibGfx/PNGLoader.cpp
@@ -796,7 +796,8 @@ static bool decode_png_bitmap(PNGLoadingContext& context)
             return false;
         break;
     default:
-        VERIFY_NOT_REACHED();
+        context.state = PNGLoadingContext::State::Error;
+        return false;
     }
 
     context.decompression_buffer.clear();