https://gcc.gnu.org/bugzilla/show_bug.cgi?id=95381
--- Comment #6 from Jeffrey A. Law <law at redhat dot com> --- That's an indication that something has tried to do an out of bounds read on a VEC object. The call chain points back to the initial quick_grow of an auto_vec from test_vector_cst_patterns -- which is wildly surprising. In fact if it were that broken I would fully expect other configurations, including x86_64 to be failing miserably. We're not seeing that. I would also expect that we could see the failure with a cross compiler, but that seems to be working fine as well. There's a nonzero chance this is actually a bug in the bootstrap compiler, particularly if it's happening in the stage1 build.
