Occasional segfault in stdarch test #794
Description
We can get occasional segfaults in the stdarch test:
process didn't exit successfully: `/home/runner/work/rustc_codegen_gcc/rustc_codegen_gcc/build/build_sysroot/sysroot_src/library/stdarch/target/debug/deps/core_arch-53a3d90ae57ca2b5` (signal: 11, SIGSEGV: invalid memory reference)