gh-136097: Fix sysconfig._parse_makefile() #136166
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serhiy-storchaka
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needs backport to 3.13
serhiy-storchaka
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needs backport to 3.13
* Fix potential infinite recursion. * Fix a bug when reference can cross boundaries of substitutions, e.g. a=$( b=$(a)a) * Fix potential quadratic complexity. * Fix KeyError for undefined CFLAGS, LDFLAGS, or CPPFLAGS. * Fix infinite recursion when keep_unresolved=False. * Unify behavior with keep_unresolved=False for bogus $ occurred before and after variable references.
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vstinner
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FFY00
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danigm
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* Fix potential infinite recursion. * Fix a bug when reference can cross boundaries of substitutions, e.g. a=$( b=$(a)a) * Fix potential quadratic complexity. * Fix KeyError for undefined CFLAGS, LDFLAGS, or CPPFLAGS. * Fix infinite recursion when keep_unresolved=False. * Unify behavior with keep_unresolved=False for bogus $ occurred before and after variable references.
This was referenced Oct 10, 2025
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sysconfig --generate-posix-varscan hang on cyclic variable definitions #136097