From 7db765bb730a73c77bba46d641f21102a8bf667a Mon Sep 17 00:00:00 2001
From: Nico Weber <thakis@chromium.org>
Date: Sun, 29 Nov 2020 14:28:40 -0500
Subject: [PATCH] LibGfx: Put debug output in PNGLoader behind PNG_DEBUG

---
 Libraries/LibGfx/PNGLoader.cpp | 14 ++++++++++++++
 1 file changed, 14 insertions(+)

diff --git a/Libraries/LibGfx/PNGLoader.cpp b/Libraries/LibGfx/PNGLoader.cpp
index f0f382ea861..073ff13d2ca 100644
--- a/Libraries/LibGfx/PNGLoader.cpp
+++ b/Libraries/LibGfx/PNGLoader.cpp
@@ -599,7 +599,9 @@ static bool decode_png_bitmap_simple(PNGLoadingContext& context)
         }
 
         if (filter > 4) {
+#ifdef PNG_DEBUG
             dbg() << "Invalid PNG filter: " << filter;
+#endif
             context.state = PNGLoadingContext::State::Error;
             return false;
         }
@@ -695,7 +697,9 @@ static bool decode_adam7_pass(PNGLoadingContext& context, Streamer& streamer, in
         }
 
         if (filter > 4) {
+#ifdef PNG_DEBUG
             dbg() << "Invalid PNG filter: " << filter;
+#endif
             context.state = PNGLoadingContext::State::Error;
             return false;
         }
@@ -832,7 +836,9 @@ static bool process_IHDR(const ByteBuffer& data, PNGLoadingContext& context)
 #endif
 
     if (context.interlace_method != PngInterlaceMethod::Null && context.interlace_method != PngInterlaceMethod::Adam7) {
+#ifdef PNG_DEBUG
         dbgprintf("PNGLoader::process_IHDR: unknown interlace method: %d\n", context.interlace_method);
+#endif
         return false;
     }
 
@@ -884,23 +890,31 @@ static bool process_chunk(Streamer& streamer, PNGLoadingContext& context)
 {
     u32 chunk_size;
     if (!streamer.read(chunk_size)) {
+#ifdef PNG_DEBUG
         printf("Bail at chunk_size\n");
+#endif
         return false;
     }
     u8 chunk_type[5];
     chunk_type[4] = '\0';
     if (!streamer.read_bytes(chunk_type, 4)) {
+#ifdef PNG_DEBUG
         printf("Bail at chunk_type\n");
+#endif
         return false;
     }
     ByteBuffer chunk_data;
     if (!streamer.wrap_bytes(chunk_data, chunk_size)) {
+#ifdef PNG_DEBUG
         printf("Bail at chunk_data\n");
+#endif
         return false;
     }
     u32 chunk_crc;
     if (!streamer.read(chunk_crc)) {
+#ifdef PNG_DEBUG
         printf("Bail at chunk_crc\n");
+#endif
         return false;
     }
 #ifdef PNG_DEBUG