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| author | Serhiy Storchaka <storchaka@gmail.com> | 2023-08-16 10:00:55 (GMT) |
|---|---|---|
| committer | GitHub <noreply@github.com> | 2023-08-16 10:00:55 (GMT) |
| commit | bd2ef82a5010985abdeef2ca71bcbcc9a366993b (patch) | |
| tree | 8c8195fa20e743c40c6c6b0627f4e84384d5678e /Lib/re/_compiler.py | |
| parent | 00bfed7cba3f2d66a1534f9f088ddf68abbf0d3f (diff) | |
| download | cpython-bd2ef82a5010985abdeef2ca71bcbcc9a366993b.zip cpython-bd2ef82a5010985abdeef2ca71bcbcc9a366993b.tar.gz cpython-bd2ef82a5010985abdeef2ca71bcbcc9a366993b.tar.bz2 | |
[3.12] gh-100061: Proper fix of the bug in the matching of possessive quantifiers (GH-102612) (#108003)
Restore the global Input Stream pointer after trying to match a sub-pattern.
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(cherry picked from commit abd9cc52d94b8e2835322b62c29f09bb0e6fcfe9)
Co-authored-by: SKO <41810398+uyw4687@users.noreply.github.com>
Diffstat (limited to 'Lib/re/_compiler.py')
| -rw-r--r-- | Lib/re/_compiler.py | 7 |
1 files changed, 0 insertions, 7 deletions
diff --git a/Lib/re/_compiler.py b/Lib/re/_compiler.py index e30740b..d8e0d2f 100644 --- a/Lib/re/_compiler.py +++ b/Lib/re/_compiler.py @@ -100,13 +100,6 @@ def _compile(code, pattern, flags): emit(ANY_ALL) else: emit(ANY) - elif op is POSSESSIVE_REPEAT: - # gh-106052: Possessive quantifiers do not work when the - # subpattern contains backtracking, i.e. "(?:ab?c)*+". - # Implement it as equivalent greedy qualifier in atomic group. - p = [(MAX_REPEAT, av)] - p = [(ATOMIC_GROUP, p)] - _compile(code, p, flags) elif op in REPEATING_CODES: if flags & SRE_FLAG_TEMPLATE: raise error("internal: unsupported template operator %r" % (op,)) |