[Bug ipa/65432] [5 Regression] Invalid read of size 1: ipa_icf::sem_item_optimizer::merge_classes(unsigned int) (ipa-icf.c:2958)

[marxin at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=65432

--- Comment #3 from Martin Liška <marxin at gcc dot gnu.org> ---
Created attachment 35057
  --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=35057&action=edit
Suggested patch

I guess the problem is caused by missing xstdup_for_dump wrappers.
Can you please Markus test for me the patch?
Thanks