[issue43941] Unit test failure in test_gdb only with -O0

[Pablo Galindo Salgado]

Pablo Galindo Salgado <pablogsal at gmail.com> added the comment:

Thanks, Larry for pinging me!

What compiler / gdb version are you using?

I tried to reproduce but I don't see any failure:

master on  master [$]  pyenv 3.9.1 took 9s
❯ ./python -m sysconfig | grep CFLAGS
        BASECFLAGS = "-Wno-unused-result -Wsign-compare"
        CFLAGS = "-Wno-unused-result -Wsign-compare -DNDEBUG -g -fwrapv -O3 -Wall -g3 -O0 -g3 -O0"
        CFLAGSFORSHARED = ""
        CFLAGS_ALIASING = ""
        CFLAGS_NODIST = ""
        CONFIGURE_CFLAGS = "-g3 -O0"
        CONFIGURE_CFLAGS_NODIST = "-std=c99 -Wextra -Wno-unused-result -Wno-unused-parameter -Wno-missing-field-initializers -Werror=implicit-function-declaration -fvisibility=hidden"
        CONFIG_ARGS = "'-C' 'CFLAGS=-g3 -O0'"
        EXTRA_CFLAGS = ""
        PY_BUILTIN_MODULE_CFLAGS = "-Wno-unused-result -Wsign-compare -DNDEBUG -g -fwrapv -O3 -Wall -g3 -O0 -g3 -O0 -std=c99 -Wextra -Wno-unused-result -Wno-unused-parameter -Wno-missing-field-initializers -Werror=implicit-function-declaration -fvisibility=hidden  -I./Include/internal -I. -I./Include -DPy_BUILD_CORE_BUILTIN"
        PY_CFLAGS = "-Wno-unused-result -Wsign-compare -DNDEBUG -g -fwrapv -O3 -Wall -g3 -O0 -g3 -O0"
        PY_CFLAGS_NODIST = "-std=c99 -Wextra -Wno-unused-result -Wno-unused-parameter -Wno-missing-field-initializers -Werror=implicit-function-declaration -fvisibility=hidden  -I./Include/internal"
        PY_CORE_CFLAGS = "-Wno-unused-result -Wsign-compare -DNDEBUG -g -fwrapv -O3 -Wall -g3 -O0 -g3 -O0 -std=c99 -Wextra -Wno-unused-result -Wno-unused-parameter -Wno-missing-field-initializers -Werror=implicit-function-declaration -fvisibility=hidden  -I./Include/internal -I. -I./Include -DPy_BUILD_CORE"
        PY_STDMODULE_CFLAGS = "-Wno-unused-result -Wsign-compare -DNDEBUG -g -fwrapv -O3 -Wall -g3 -O0 -g3 -O0 -std=c99 -Wextra -Wno-unused-result -Wno-unused-parameter -Wno-missing-field-initializers -Werror=implicit-function-declaration -fvisibility=hidden  -I./Include/internal -I. -I./Include"

master on  master [$]  pyenv 3.9.1
❯ ./python -m test test_gdb -m test_wrapper_call -v
== CPython 3.10.0a7+ (heads/master:d92513390a, Apr 27 2021, 13:20:32) [GCC 10.2.0]
== Linux-5.11.16-arch1-1-x86_64-with-glibc2.33 little-endian
== cwd: /home/pablogsal/github/python/master/build/test_python_27393æ
== CPU count: 36
== encodings: locale=UTF-8, FS=utf-8
0:00:00 load avg: 1.47 Run tests sequentially
0:00:00 load avg: 1.47 [1/1] test_gdb
GDB version 10.1:
    GNU gdb (GDB) 10.1
    Copyright (C) 2020 Free Software Foundation, Inc.
    License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>
    This is free software: you are free to change and redistribute it.
    There is NO WARRANTY, to the extent permitted by law.
test_wrapper_call (test.test_gdb.PyBtTests) ... ok

----------------------------------------------------------------------

Ran 1 test in 8.752s

OK

== Tests result: SUCCESS ==

1 test OK.

Total duration: 9.2 sec
Tests result: SUCCESS


These are my versions:

❯ gcc --version
gcc (GCC) 10.2.0
Copyright (C) 2020 Free Software Foundation, Inc.
This is free software; see the source for copying conditions.  There is NO
warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.


master on  master [$]  pyenv 3.9.1
❯ gdb --version
GNU gdb (GDB) 10.1
Copyright (C) 2020 Free Software Foundation, Inc.
License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>
This is free software: you are free to change and redistribute it.
There is NO WARRANTY, to the extent permitted by law.

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Python tracker <report at bugs.python.org>
<https://bugs.python.org/issue43941>
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