Control: tag -1 upstream On Fri, Apr 17, 2020 at 06:26:17PM +0300, Niko Tyni wrote: > On Fri, Apr 17, 2020 at 11:08:35AM +0000, Matthias Klose wrote: > > Package: src:perl > > Version: 5.30.0-9 > > Severity: normal > > Tags: sid bullseye > > User: debian-...@lists.debian.org > > Usertags: ftbfs-gcc-10
> > Failed 6 tests out of 2533, 99.76% okay. > > ../cpan/Memoize/t/tie_gdbm.t > > ../cpan/Memoize/t/tie_ndbm.t > > ../ext/GDBM_File/t/gdbm.t > > ../ext/NDBM_File/t/ndbm.t > > ../ext/ODBM_File/t/odbm.t > > ../lib/AnyDBM_File.t > > I can reproduce this. It happens at both -O2 and -O0, but goes away when > building with -DDEBUGGING (so our /usr/bin/debugperl). This is a 26 years old bug. >From regen-configure/U/compline/ccflags.U : ?RCS: Revision 3.0.1.4 1994/05/06 14:28:45 ram ?RCS: patch23: -fpcc-struct-return only needed in gcc 1.x (ADO) [...] case "$gccversion" in 1*) dflt="$dflt -fpcc-struct-return" ;; esac So the perl Configure script adds -fpcc-struct-return to the compiler flags if the GCC version starts with number 1. This changes the ABI, causing a segmentation fault when calling external code in libgdbm. Should be easy to fix. -- Niko