David Cuthbert <[email protected]> added the comment:
I'm seeing this on a rebuild now of Python 3.7.4 on Ubuntu 18.04 (in my case
against _ssl.c).
What's happening is there's coverage/profiling data being generated in the
build chain (somewhere), which spits out files named *.gcda. Interestingly,
make clean does *not* clean these files up.
gcc is attempting to use this data in its optimization, but discovers that it's
now bogus -- likely due to system library headers (like OpenSSL) being updated
in the meantime, with some inline code causing the coverage data to become
invalid.
The fix should be to have 'make clean' clean up these *.gcda files. In the
meantime, the workaround is to run "find . -name \*.gcda -exec rm '{}' \;"
----------
nosy: +dacut
versions: +Python 3.7 -Python 3.8
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<https://bugs.python.org/issue34820>
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