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gh-104736: Fix test_gdb tests on ppc64le with clang (#109360)

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Fix test_gdb on Python built with LLVM clang 16 on Linux ppc64le (ex:
Fedora 38). Search patterns in gdb "bt" command output to detect
when gdb fails to retrieve the traceback. For example, skip a test if
"Backtrace stopped: frame did not save the PC" is found.
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Victor Stinner 2023-09-13 06:24:32 +02:00 • committed by GitHub
parent b39f65a495
commit 44d9a71ea2
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Lib/test/test_gdb.py
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@ -246,6 +246,14 @@ class DebuggerTests(unittest.TestCase):
# gh-91960: On Python built with "clang -Og", gdb gets
# "frame=<optimized out>" for _PyEval_EvalFrameDefault() parameter
'(unable to read python frame information)',
# gh-104736: On Python built with "clang -Og" on ppc64le,
# "py-bt" displays a truncated or not traceback, but "where"
# logs this error message:
'Backtrace stopped: frame did not save the PC',
# gh-104736: When "bt" command displays something like:
# "#1 0x0000000000000000 in ?? ()", the traceback is likely
# truncated or wrong.
' ?? ()',
):
if pattern in out:
raise unittest.SkipTest(f"{pattern!r} found in gdb output")