The setjmp.exp testcase is broken in several ways:
- It uses -D_FORTIFY_SOURCE=2 without -O1 or -O2, which basically does nothing.
- When adding -O1 or -O2 (with or without -D_FORTIFY_SOURCE=2) the testcase
fails because of backtrace mismatch.
- At least on Fedora 17 glibc doesn't have setjmp/longjmp markers, so the whole
test doesn't actually test anything