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Diffstat (limited to 'src/gui/image/qpnghandler.cpp')
| -rw-r--r-- | src/gui/image/qpnghandler.cpp | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/src/gui/image/qpnghandler.cpp b/src/gui/image/qpnghandler.cpp index fdf77e162c..d55a26b2a4 100644 --- a/src/gui/image/qpnghandler.cpp +++ b/src/gui/image/qpnghandler.cpp @@ -521,6 +521,12 @@ bool QPngHandlerPrivate::readPngHeader() png_set_error_fn(png_ptr, 0, 0, qt_png_warning); +#if defined(PNG_SET_OPTION_SUPPORTED) && defined(PNG_MAXIMUM_INFLATE_WINDOW) + // Trade off a little bit of memory for better compatibility with existing images + // Ref. "invalid distance too far back" explanation in libpng-manual.txt + png_set_option(png_ptr, PNG_MAXIMUM_INFLATE_WINDOW, PNG_OPTION_ON); +#endif + info_ptr = png_create_info_struct(png_ptr); if (!info_ptr) { png_destroy_read_struct(&png_ptr, 0, 0); |