https://gcc.gnu.org/bugzilla/show_bug.cgi?id=92207
--- Comment #5 from Richard Earnshaw <rearnsha at gcc dot gnu.org> --- Apart from the addresses used, the traces are identical right up until the latter version crashes. The testcase tries to allocate 128Mb+4bytes of memory, so my suspicion is that this is a test that needs more memory in the simulation. Why this patch triggers this failure I'm not sure.