diff options
| author | Lars Knoll <lars.knoll@qt.io> | 2018-03-19 15:40:31 +0100 |
|---|---|---|
| committer | Lars Knoll <lars.knoll@qt.io> | 2018-03-20 07:53:09 +0000 |
| commit | f4b6ea2ae2619bd4f7f7ef2d5255341d8da5726f (patch) | |
| tree | 96654975a16a58da0e73333a8fc9df5537185464 /src/plugins/platforms/eglfs | |
| parent | 83c01a59098762fd2f1a75fff1b1d19b3c2c9f99 (diff) | |
Fix infinite recursion on stack trying load empty glyhs
Loading empty glyphs in some fonts would cause the application
to crash with an infinite recusion on the stack between qfontengine
and qfontengine_ft:
12 0x00007ffff6954395 in QFontEngine::alphaMapForGlyph (this=0x7fb0c0, glyph=50, subPixelPosition=..., t=...) at text/qfontengine.cpp:877
13 0x00007fffee7d104e in QFontEngineFT::alphaMapForGlyph (this=0x7fb0c0, g=50, subPixelPosition=..., t=...) at freetype/qfontengine_ft.cpp:2096
14 0x00007fffee7d0ea8 in QFontEngineFT::alphaMapForGlyph (this=0x7fb0c0, g=50, subPixelPosition=...) at freetype/qfontengine_ft.cpp:2078
15 0x00007ffff6954395 in QFontEngine::alphaMapForGlyph (this=0x7fb0c0, glyph=50, subPixelPosition=..., t=...) at text/qfontengine.cpp:877
16 0x00007fffee7d104e in QFontEngineFT::alphaMapForGlyph (this=0x7fb0c0, g=50, subPixelPosition=..., t=...) at freetype/qfontengine_ft.cpp:2096
17 0x00007fffee7d0ea8 in QFontEngineFT::alphaMapForGlyph (this=0x7fb0c0, g=50, subPixelPosition=...) at freetype/qfontengine_ft.cpp:2078
18 0x00007ffff6954395 in QFontEngine::alphaMapForGlyph (this=0x7fb0c0, glyph=50, subPixelPosition=..., t=...) at text/qfontengine.cpp:877
...
Fix this by trusting the freetype fontengine that it could load the glyph,
as the base class anyway can't do better.
Task-number: QTBUG-62331
Task-number: QTBUG-66617
Change-Id: I6c7c24d24ec0f71a66fa519c04a336f276e418f6
Reviewed-by: Simon Hausmann <simon.hausmann@qt.io>
Reviewed-by: Eskil Abrahamsen Blomfeldt <eskil.abrahamsen-blomfeldt@qt.io>
Diffstat (limited to 'src/plugins/platforms/eglfs')
0 files changed, 0 insertions, 0 deletions