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bug#58334: 29.0.50; ASAN heap use after free in gui_produce_glyphs


From: Po Lu
Subject: bug#58334: 29.0.50; ASAN heap use after free in gui_produce_glyphs
Date: Fri, 07 Oct 2022 16:36:05 +0800
User-agent: Gnus/5.13 (Gnus v5.13) Emacs/28.0.91 (gnu/linux)

Gerd Möllmann <gerd.moellmann@gmail.com> writes:

> And, while vaccuming, I also wondered what happens with the glyph
> matrices, and maybe other global state?

Isn't input blocked wherever the glyph matrices are modified?  If not,
how come expose_frame always works correctly?




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