Serhiy Storchaka added the comment: I can reproduce warnings in Modules/_posixsubprocess.c:
gcc -pthread -fPIC -Wno-unused-result -Wsign-compare -DNDEBUG -g -fwrapv -O3 -Wall -Wstrict-prototypes -std=c99 -Wextra -Wno-unused-result -Wno-unused-parameter -Wno-missing-field-initializers -Wstrict-overflow -I./Include -I. -I/usr/include/i386-linux-gnu -I/usr/local/include -I/home/serhiy/py/cpython/Include -I/home/serhiy/py/cpython -c /home/serhiy/py/cpython/Modules/_posixsubprocess.c -o build/temp.linux-i686-3.7/home/serhiy/py/cpython/Modules/_posixsubprocess.o /home/serhiy/py/cpython/Modules/_posixsubprocess.c: In function ‘child_exec’: /home/serhiy/py/cpython/Modules/_posixsubprocess.c:524:33: warning: assuming pointer wraparound does not occur when comparing P +- C1 with P +- C2 [-Wstrict-overflow] while (saved_errno != 0 && cur > hex_errno) { ^ /home/serhiy/py/cpython/Modules/_posixsubprocess.c: In function ‘subprocess_fork_exec’: /home/serhiy/py/cpython/Modules/_posixsubprocess.c:524:33: warning: assuming pointer wraparound does not occur when comparing P +- C1 with P +- C2 [-Wstrict-overflow] while (saved_errno != 0 && cur > hex_errno) { ^ /home/serhiy/py/cpython/Modules/_posixsubprocess.c:544:1: warning: assuming pointer wraparound does not occur when comparing P +- C1 with P +- C2 [-Wstrict-overflow] subprocess_fork_exec(PyObject* self, PyObject *args) ^ /home/serhiy/py/cpython/Modules/_posixsubprocess.c:544:1: warning: assuming pointer wraparound does not occur when comparing P +- C1 with P +- C2 [-Wstrict-overflow] /home/serhiy/py/cpython/Modules/_posixsubprocess.c:524:33: warning: assuming pointer wraparound does not occur when comparing P +- C1 with P +- C2 [-Wstrict-overflow] while (saved_errno != 0 && cur > hex_errno) { ^ /home/serhiy/py/cpython/Modules/_posixsubprocess.c:524:33: warning: assuming pointer wraparound does not occur when comparing P +- C1 with P +- C2 [-Wstrict-overflow] Proposed simple patch fixes this. ---------- assignee: -> serhiy.storchaka keywords: +patch resolution: wont fix -> stage: resolved -> patch review status: closed -> open versions: +Python 3.6, Python 3.7 Added file: http://bugs.python.org/file44820/issue20947.patch _______________________________________ Python tracker <rep...@bugs.python.org> <http://bugs.python.org/issue20947> _______________________________________ _______________________________________________ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com