From f383fa4b9c64e319cb9b8a63ca88368ad752db27 Mon Sep 17 00:00:00 2001 From: Albert Astals Cid Date: Wed, 30 Jan 2019 01:31:30 +0100 Subject: [PATCH] png: initialize color_type to 0 Fixes ==12==WARNING: MemorySanitizer: use-of-uninitialized-value #0 0x6b8179 in setup_qt /src/qtbase/src/gui/image/qpnghandler.cpp:247:9 on fuzzed file Change-Id: I772d536a0db91665dc16e94751ef507de1064376 Reviewed-by: Eirik Aavitsland --- src/gui/image/qpnghandler.cpp | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/src/gui/image/qpnghandler.cpp b/src/gui/image/qpnghandler.cpp index 8ae03d5d387..110ee1670b1 100644 --- a/src/gui/image/qpnghandler.cpp +++ b/src/gui/image/qpnghandler.cpp @@ -234,7 +234,7 @@ void setup_qt(QImage& image, png_structp png_ptr, png_infop info_ptr, QSize scal png_uint_32 width; png_uint_32 height; int bit_depth; - int color_type; + int color_type = 0; png_bytep trans_alpha = 0; png_color_16p trans_color_p = 0; int num_trans; @@ -678,7 +678,7 @@ QImage::Format QPngHandlerPrivate::readImageFormat() { QImage::Format format = QImage::Format_Invalid; png_uint_32 width, height; - int bit_depth, color_type; + int bit_depth, color_type = 0; png_colorp palette; int num_palette; png_get_IHDR(png_ptr, info_ptr, &width, &height, &bit_depth, &color_type, 0, 0, 0);