[Bug rtl-optimization/91347] [7/8/9/10 Regression] pointer_string in linux vsprintf.c is miscompiled when sibling calls are optimized

[danglin at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=91347

--- Comment #10 from John David Anglin <danglin at gcc dot gnu.org> ---
(In reply to Eric Botcazou from comment #6)
> This looks similar to PR target/55023.

Yes.  Looking at how scan_insn() evolved since PR target/55023, it is
clear why this is a regression.