[Bug go/66303] runtime.Caller() returns infinitely deep stack frames on s390x

[vogt at linux dot vnet.ibm.com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=66303

--- Comment #5 from Dominik Vogt <vogt at linux dot vnet.ibm.com> ---
Funny, the backtrace claims that 0x80001de7 ist main.main+23 (#0 of the
backtrace), but it actually is main.main-1 (#7).