[Bug lto/65316] [5 Regression] LTO: Uninitialized memory / ICE with -g -fno-lto-odr-type-merging: in types_same_for_odr, at ipa-devirt.c:465

[burnus at gcc dot gnu.org]

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.