STINNER Victor <vstin...@redhat.com> added the comment: Extract of attached test.pythoninfo output:
sys.maxsize: 2147483647 sysconfig[PY_CFLAGS]: -fno-strict-aliasing -march=i686 -mtune=generic -O2 -pipe -fstack-protector-strong -fno-plt -DNDEBUG -march=i686 -mtune=generic -O2 -pipe -fstack-protector-strong -fno-plt -I. -IInclude -I./Include -D_FORTIFY_SOURCE=2 -fPIC -DPy_BUILD_CORE I tried to reproduce the issue on my x86_64 Fedora 28 (64-bit) using: ./configure CFLAGS="-m32" LDFLAGS="-m32" && make But I failed to reproduce the issue. I also tried to add "-fstack-protector-strong -fno-plt" but I still fail to reproduce the bug. On interesting thing is that your CFLAGS don't contain -fwrapv. You can try the following command to check if gcc -v --help contains -fwrapv? "gcc -v --help|grep -- -fwrapv" With my french locale, for example, I see: -fwrapv Supposer que le débordement de l'arithmétique signée boucle sur la plage accessible. You may try to force -fwrapv using ./configure CFLAGS="-fwrapv" or directly by adding directly the option to the OPT variable in Makefile. Example of options on my x86_64 Fedora and "./configure": OPT= -DNDEBUG -g -fwrapv -O3 -Wall BASECFLAGS= -Wno-unused-result -Wsign-compare CONFIGURE_CFLAGS_NODIST= -std=c99 -Wextra -Wno-unused-result -Wno-unused-parameter -Wno-missing-field-initializers -Werror=implicit-function-declaration Note: When Python is compiled with --with-pydebug, -fwrapv is not used. Note: Your CFLAGS use -O2 whereas Python uses -O3 by default in release mode. ---------- _______________________________________ Python tracker <rep...@bugs.python.org> <https://bugs.python.org/issue34096> _______________________________________ _______________________________________________ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
