https://gcc.gnu.org/bugzilla/show_bug.cgi?id=65316
--- Comment #5 from Tobias Burnus <burnus at gcc dot gnu.org> --- Created attachment 34972 --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=34972&action=edit valgrind output (for the lto1 child call) (In reply to Jan Hubicka from comment #3) > $ while true ; do ./xgcc -B ./ -r -nostdlib -O2 -fno-lto-odr-type-merging > -flto one.o two.o ; done Still fails here with a fail rate of 6.2%. (I used: "for ((I=0; $I<1000; I++))" to gather the data.) If I run "valgrind --trace-children=yes" (required as the failure is in lto1 and not in (x)gcc), it shows the attached warnings.