https://gcc.gnu.org/bugzilla/show_bug.cgi?id=101260
--- Comment #3 from Stefan Schulze Frielinghaus <stefansf at linux dot ibm.com>
---
The problem shows up for option -O1 (options -O{0,2,3} are fine) and GCC 10 and
11 (mainline and GCC 9 are fine).
