[Bug tree-optimization/119614] [15 regression] protobuf-29.4 fails to build with -O2 (error: cannot tail-call: call and return value are different)

[sjames at gcc dot gnu.org via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=119614

--- Comment #40 from Sam James <sjames at gcc dot gnu.org> ---
Created attachment 61131
  --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=61131&action=edit
p.ii.xz

Reduction is pretty slow, but:
```
$ g++ p.ii -w -flto=auto -O3 -shared
p.ii: In function ‘MpRepeatedString’:
p.ii:1791:23: error: cannot tail-call: call and return value are different
 1791 |           return Error(MpRepeatedString_msg, MpRepeatedString_ptr,
      |                       ^
[...]
```