[Bug bootstrap/79069] [7 Regression] Bootstrap failure on s390x-linux while building libgo

[vogt at linux dot vnet.ibm.com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=79069

--- Comment #1 from Dominik Vogt <vogt at linux dot vnet.ibm.com> ---
What are the revision and the configure flags that trigger this, please? 
r244350 bootstraps without problem here.