[Bug c++/101361] Bogus -Wstringop-overread warning with -O3

[Theodore.Papadopoulo at inria dot fr]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=101361

--- Comment #2 from Theodore.Papadopoulo at inria dot fr ---
Same problem here with the attached test case and gcc version 11.1.1 20210531
(Red Hat 11.1.1-3).