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Title: bpo-23689: re module, fix memory leak when a match is terminated by a signal or memory allocation failure · Pull Request #32223 · python/cpython · GitHub

Open Graph Title: bpo-23689: re module, fix memory leak when a match is terminated by a signal or memory allocation failure · Pull Request #32223 · python/cpython

X Title: bpo-23689: re module, fix memory leak when a match is terminated by a signal or memory allocation failure · Pull Request #32223 · python/cpython

Description: @serhiy-storchaka , please review the commits one by one. MSVC 2022 non-PGO release build, run test_re.py. It's a bit slower. (best of 10) Before: 0.278 sec After: 0.283 sec But when switching REPEAT very frequently, it has some speed up: import pyperf setup = ("import re;" "s = 100_000_000 * 'a';" "p = r'.*?(?:bb)+';" "p = re.compile(p)") stmt = "p.match(s)" runner = pyperf.Runner() runner.timeit("match", stmt=stmt, setup=setup) # Before: Mean +- std dev: 1.88 sec +- 0.03 sec # After: Mean +- std dev: 1.63 sec +- 0.03 sec https://bugs.python.org/issue23689

Open Graph Description: @serhiy-storchaka , please review the commits one by one. MSVC 2022 non-PGO release build, run test_re.py. It's a bit slower. (best of 10) Before: 0.278 sec After: 0.283 sec But when switchin...

X Description: @serhiy-storchaka , please review the commits one by one. MSVC 2022 non-PGO release build, run test_re.py. It's a bit slower. (best of 10) Before: 0.278 sec After: 0.283 sec But when swit...

Opengraph URL: https://github.com/python/cpython/pull/32223

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og:image:alt@serhiy-storchaka , please review the commits one by one. MSVC 2022 non-PGO release build, run test_re.py. It's a bit slower. (best of 10) Before: 0.278 sec After: 0.283 sec But when switchin...
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