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Commit44d9a71

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pythongh-104736: Fix test_gdb tests on ppc64le with clang (python#109360)
Fix test_gdb on Python built with LLVM clang 16 on Linux ppc64le (ex:Fedora 38). Search patterns in gdb "bt" command output to detectwhen 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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‎Lib/test/test_gdb.py‎

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@@ -246,6 +246,14 @@ def get_stack_trace(self, source=None, script=None,
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# gh-91960: On Python built with "clang -Og", gdb gets
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# "frame=<optimized out>" for _PyEval_EvalFrameDefault() parameter
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'(unable to read python frame information)',
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# gh-104736: On Python built with "clang -Og" on ppc64le,
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# "py-bt" displays a truncated or not traceback, but "where"
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# logs this error message:
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'Backtrace stopped: frame did not save the PC',
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# gh-104736: When "bt" command displays something like:
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# "#1 0x0000000000000000 in ?? ()", the traceback is likely
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# truncated or wrong.
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' ?? ()',
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):
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ifpatterninout:
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raiseunittest.SkipTest(f"{pattern!r} found in gdb output")
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Fix test_gdb on Python built with LLVM clang 16 on Linux ppc64le (ex: Fedora
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38). Search patterns in gdb "bt" command output to detect when gdb fails to
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retrieve the traceback. For example, skip a test if ``Backtrace stopped: frame
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did not save the PC`` is found. Patch by Victor Stinner.

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