https://blogs.gentoo.org/ago/2020/07/04/gentoo-tinderbox/ Issue: dev-perl/Wx-Perl-ProcessStream-0.320.0-r4 fails tests (hang). Discovered on: amd64 (internal ref: lto_tinderbox) NOTE: This machine uses lto with CFLAGS=-flto -Werror=odr -Werror=lto-type-mismatch -Werror=strict-aliasing Here is a bit of explanation: -Werror=lto-type-mismatch: User to find possible runtime issues in packages. It likely means the package is unsafe to build & use with LTO. For projects using the same identifier but with different types across different files, they must be fixed to be consistent across the codebase. -Werror=odr: Used to find possible runtime issues in packages. These bugs are a problem anyway but may be even worse when combined with LTO. C++ code must comply with the One Definition Rule (ODR) - see https://en.cppreference.com/w/cpp/language/definition#One_Definition_Rule. -Werror=strict-aliasing: Used to find possible runtime issues in packages. These bugs are a problem anyway but may be even worse when combined with LTO. Workarounds: - If upstream is friendly and still active, file a bug upstream. For emulators, codecs, games, or multimedia packages, it may be worth just applying a workaround instead, as upstreams sometimes aren't receptive to these bugs (VALID FOR ALL). - Use the new 'filter-lto' from flag-o-matic.eclass as it's likely to be unsafe with LTO (VALID FOR lto-type-mismatch - odr). - Fix it yourself if interested, of course (VALID FOR ALL). - Append-flags -fno-strict-aliasing (VALID FOR strict-aliasing). - Use memcpy() but a union is sometimes suitable too (VALID FOR strict-aliasing). - -fstrict-aliasing is implied by -O2, so this must be addressed in some form (VALID FOR strict-aliasing). See also: https://marc.info/?l=gentoo-dev&m=165639574126280&w=2 I had to kill the process.
Created attachment 803191 [details] build.log build log and emerge --info
It is strange. If I run FEATURES="test" emerge -1 Wx-Perl-ProcessStream, tests hang. >>> Test phase: dev-perl/Wx-Perl-ProcessStream-0.320.0-r4 * Starting Xvfb ... * Xvfb started on DISPLAY=:0 * Test::Harness Jobs=32 make -j32 test TEST_VERBOSE=0 But, if I run "MAKEOPTS="-j32" FEATURES="test" emerge -1 Wx-Perl-ProcessStream" (exactly the same -j value), they work >>> Test phase: dev-perl/Wx-Perl-ProcessStream-0.320.0-r4 * Starting Xvfb ... * Xvfb started on DISPLAY=:0 * Test::Harness Jobs=32 make -j32 test TEST_VERBOSE=0 PERL_DL_NONLAZY=1 "/usr/bin/perl" "-MExtUtils::Command::MM" "-MTest::Harness" "-e" "undef *Test::Harness::Switches; test_harness(0, 'blib/lib', 'blib/arch')" t/*.t ===( 1;0 0/1 1/67 )============================================ ... Just reproduced with sys-apps/portage-3.0.55
