New submission from Jeroen Demeyer <[email protected]>:
The function python_is_optimized() in Lib/test/support.py:
def python_is_optimized():
"""Find if Python was built with optimizations."""
cflags = sysconfig.get_config_var('PY_CFLAGS') or ''
final_opt = ""
for opt in cflags.split():
if opt.startswith('-O'):
final_opt = opt
return final_opt not in ('', '-O0', '-Og')
However, it seems that the *default* (when no special CFLAGS are configured) is
-O3. My Python build is done with this default -O3 but python_is_optimized()
returns False. This is the reason why I didn't catch the buildbot failure at
https://github.com/python/cpython/pull/13185#issuecomment-497062965
(this test is only run when python_is_optimized() is True)
----------
components: Tests
messages: 343952
nosy: benjamin.peterson, jdemeyer, petr.viktorin, pitrou
priority: normal
severity: normal
status: open
title: python_is_optimized() false negatives
type: behavior
versions: Python 3.8, Python 3.9
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Python tracker <[email protected]>
<https://bugs.python.org/issue37097>
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