3rdparty/ext_qt/0001-Remove-chunk-size-limits.patch

0001 From ab2264e36be63ddc886f37441ec3263f0b5ccdc8 Mon Sep 17 00:00:00 2001
0002 From: Halla Rempt <halla@valdyas.org>
0003 Date: Wed, 30 Dec 2020 10:54:08 +0100
0004 Subject: [PATCH 42/43] Remove chunk size limits
0005
0006 ---
0007  src/gui/image/qpnghandler.cpp | 12 ++++++++++++
0008  1 file changed, 12 insertions(+)
0009
0010 diff --git a/src/gui/image/qpnghandler.cpp b/src/gui/image/qpnghandler.cpp
0011 index e7e998efd1..751ae4f043 100644
0012 --- a/src/gui/image/qpnghandler.cpp
0013 +++ b/src/gui/image/qpnghandler.cpp
0014 @@ -542,6 +542,12 @@ bool QPngHandlerPrivate::readPngHeader()
0015
0016      png_set_error_fn(png_ptr, 0, 0, qt_png_warning);
0017
0018 +#ifdef PNG_SET_USER_LIMITS_SUPPORTED
0019 +      /* Remove the user limits, if any */
0020 +      png_set_chunk_cache_max(png_ptr, 0);
0021 +      png_set_chunk_malloc_max(png_ptr, 0);
0022 +#endif
0023 +
0024  #if defined(PNG_SET_OPTION_SUPPORTED) && defined(PNG_MAXIMUM_INFLATE_WINDOW)
0025      // Trade off a little bit of memory for better compatibility with existing images
0026      // Ref. "invalid distance too far back" explanation in libpng-manual.txt
0027 @@ -831,6 +837,12 @@ bool QPNGImageWriter::writeImage(const QImage& image, volatile int compression_i
0028
0029      png_set_error_fn(png_ptr, 0, 0, qt_png_warning);
0030
0031 +#ifdef PNG_SET_USER_LIMITS_SUPPORTED
0032 +      /* Remove the user limits, if any */
0033 +      png_set_chunk_cache_max(png_ptr, 0);
0034 +      png_set_chunk_malloc_max(png_ptr, 0);
0035 +#endif
0036 +
0037      info_ptr = png_create_info_struct(png_ptr);
0038      if (!info_ptr) {
0039          png_destroy_write_struct(&png_ptr, 0);
0040 --
0041 2.20.1.windows.1
0042