https://gcc.gnu.org/bugzilla/show_bug.cgi?id=70360
--- Comment #3 from psturm at computervoice dot com --- Created attachment 38064 --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=38064&action=edit -default-pie -enable-vtv I understand the test suite cannot contemplate every single combination of configure options. However, I would suggest that certain combinations might be more common than others. My particular area of focus is configuring GCC6 for the most secure default configuration. Therefore, I am paying particular attention to: --enable--default-pie --enable--default-ssp --enable-vtable-verify I have built GCC6 with each of these configure flags individually and reported the test suite unexpected failures as bugs. When I built with --enable-default-pie The result was bug fixes for the following related issues: https://gcc.gnu.org/bugzilla/show_bug.cgi?id=70150 https://gcc.gnu.org/bugzilla/show_bug.cgi?id=70192 When I built with --enable-default-ssp I reported: https://gcc.gnu.org/bugzilla/show_bug.cgi?id=70230 Richard Biener replied that the 11 regressions were expected for this configure flag. I plan to revisit this and see if I am capable of modifying the relevant tests to either be skipped for this configure flag or disable the default that is passed so the test suite passes. Of note here is that I would have to deal with 11 failed test cases. For --enable-vtable-verify I already reported the ABI error that you said was expected. I next made a build with the combination of: --enable--default-pie --enable-vtable-verify The result was: gcc: 4 unexpected failures libstdc++: 2106 unexpected failures libvtv: 58 unexpected failures I am not a programmer, but I can run the builds with various build parameters and report my results. Most of the 2106 failures for libstdc++ are for "compilation failed to produce executable", so I suspect if we can figure out why that is happening, we can dramatically reduce the scope of what we need to look at. I have attached the test suite summary for the build that combines default-pie and vtable-verify. I am building X86_64 on an Intel Broadwell CPU. Please advise.
