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[Impeller] Ensure that embedded blobs are placed at aligned addresses. #41526
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chinmaygarde
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Apr 28, 2023
impeller/tools/xxd.py
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| output.write(f'#include "{output_header_basename}"\n') | ||
| output.write(f'const unsigned char impeller_{args.symbol_name}_data[] =\n') | ||
| output.write( | ||
| f'alignas(8) const unsigned char impeller_{args.symbol_name}_data[] =\n' |
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This should probably be alignas(long double).
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Ooh, found this. So alignas(std::max_align_t) for maximum portability.
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FlatBuffer deserialization may segfault if the buffer is based at an unaligned address.
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…125722) flutter/engine@1ae848c...3835d97 2023-04-28 [email protected] [Impeller] Ensure that embedded blobs are placed at aligned addresses. (flutter/engine#41526) If this roll has caused a breakage, revert this CL and stop the roller using the controls here: https://autoroll.skia.org/r/flutter-engine-flutter-autoroll Please CC [email protected],[email protected],[email protected] on the revert to ensure that a human is aware of the problem. To file a bug in Flutter: https://github.com/flutter/flutter/issues/new/choose To report a problem with the AutoRoller itself, please file a bug: https://bugs.chromium.org/p/skia/issues/entry?template=Autoroller+Bug Documentation for the AutoRoller is here: https://skia.googlesource.com/buildbot/+doc/main/autoroll/README.md
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FlatBuffer deserialization may segfault if the buffer is based at an unaligned address.