[3.13] gh-145801: Use gcc -fprofile-update=atomic for PGO builds (#145802)#145893
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vstinner merged 1 commit intopython:3.13from Mar 12, 2026
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[3.13] gh-145801: Use gcc -fprofile-update=atomic for PGO builds (#145802)#145893vstinner merged 1 commit intopython:3.13from
vstinner merged 1 commit intopython:3.13from
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…on#145802) When Python build is optimized with GCC using PGO, use -fprofile-update=atomic option to use atomic operations when updating profile information. This option reduces the risk of gcov Data Files (.gcda) corruption which can cause random GCC crashes. (cherry picked from commit 08a018e)
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When Python build is optimized with GCC using PGO, use -fprofile-update=atomic option to use atomic operations when updating profile information. This option reduces the risk of gcov Data Files (.gcda) corruption which can cause random GCC crashes.
(cherry picked from commit 08a018e)