I also tried adding
export DEB_CFLAGS_MAINT_APPEND = -fno-strict-aliasing
to debian/rules. I don't know much about debian packages and how that would
normally work, but I don't see how that would ever get picked up by their
config/make system. It doesn't appear to be having any effect at all.
Here's what I did to get the test failures down to 0 on gcc6:
1. modify the code at line 3908 in js/src/configure.in to do -fno-
strict-aliasing no matter what the gcc version is:
dnl ========================================================
dnl = Disable -fstrict-aliasing with GCC
dnl = See bugs 821502 and 832623.
dnl ========================================================
if test -n "$GNU_CC" -a -z "$CLANG_CC"; then
CFLAGS="$CFLAGS -fno-strict-aliasing"
CXXFLAGS="$CXXFLAGS -fno-strict-aliasing"
fi
2. cd js/src
3. autoconf2.13 #regen configure
4. ./configure #reconfigure
5. make clean
6. make #watch and see the -fno-strict-aliasing
7.
make check-jstests | grep -c UNEXPECTED-FAIL
0
PS. This seems to be mostly unrelated to the fix-gcc6-segfault.patch.
If I remove fix-gcc6-segfault.patch, the test failures go back up. So
what I'm purposing doesn't replace the need for fix-gcc6-segfault.patch.
I think it should be treated separately.
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https://bugs.launchpad.net/bugs/1682631
Title:
gnome-shell crashes in libmozjs on x86_64
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