[libc-commits] [libc] [libc][setjmp] fix setjmp test via naked fn attr (PR #88054)

[Nick Desaulniers via libc-commits]

nickdesaulniers wrote:

The more I work on the out of line asm version (https://github.com/llvm/llvm-project/pull/88157), the more I hate it and prefer this approach.

https://github.com/llvm/llvm-project/pull/88054