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GeezerVison is showing github.com — [3.13] gh-156114: Fix crash in perf trampoline with unencodable code names (GH-156300) by pablogsal · Pull Request #157774 · python/cpython

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@pablogsal

@pablogsal pablogsal commented Sep 18, 2026 •
edited by bedevere-app Bot
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Backport of GH-156300 to 3.13.

The older jitdump implementation formats the symbol name directly, so the conflict resolution clears encoding errors and substitutes empty strings there. The regression test and news entry are preserved.

All 15 tests in test_perf_profiler pass on a debug build. Direct checks with unencodable qualified names and filenames also pass for both perf backends.

(cherry picked from commit 6dad8b8)

Co-authored-by: Shamil [email protected]

  • Issue: segfault/debug abort from perf_map_write_entry with lone surrogate in filename or qualname #156114

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@ashm-dev @pablogsal
pythongh-156114: Fix crash in perf trampoline with unencodable code n…
8009c93 
…ames (python#156300)

(cherry picked from commit 6dad8b8)
@bedevere-app bedevere-app Bot mentioned this pull request Sep 18, 2026
segfault/debug abort from perf_map_write_entry with lone surrogate in filename or qualname #156114
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@bedevere-app bedevere-app Bot added the awaiting core review label Sep 18, 2026
@bedevere-app bedevere-app Bot mentioned this pull request Sep 18, 2026
gh-156114: Fix crash in perf trampoline with unencodable code names #156300
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@pablogsal
pablogsal enabled auto-merge (squash) September 18, 2026 21:16
@pablogsal
pablogsal merged commit 2aed763 into python:3.13 Sep 18, 2026
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@pablogsal
pablogsal deleted the backport-156300-3.13 branch September 18, 2026 21:27
@bedevere-app bedevere-app Bot removed the awaiting core review label Sep 18, 2026
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@pablogsal @ashm-dev
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