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Hide FriBiDi shim symbols to avoid conflict with real FriBiDi library #5651

merged 1 commit into from Sep 1, 2021


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@nulano nulano commented Aug 3, 2021

Fixes #5637

In #5637, when Gtk is imported, the FriBiDi library gets loaded which replaces the shim symbols due to dynamic linking. Trying to load _imagingft then calls load_fribidi which attempts to overwrite its symbols and segfaults. Hiding the symbols prevents them from being replaced by the real library and segfaulting. Hiding is the default with MSVC.

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@wyatt8740 wyatt8740 commented Aug 3, 2021

Just want to state here as well that this PR fixes the fribidi-related segfaults that I was having with Pillow 8.3.1.

Looks like it's moments from clearing the last two tests (macOS/pypy) as well.

@nulano nulano mentioned this pull request Aug 30, 2021
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hugovk approved these changes Sep 1, 2021
@hugovk hugovk merged commit 874118e into python-pillow:master Sep 1, 2021
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@nulano nulano deleted the 5637 branch Sep 1, 2021
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3 participants