[Bug ipa/115447] New: GCC fails to tail call unless variable wrapped in a block

[mikolajpirog at gmail dot com via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=115447

            Bug ID: 115447
           Summary: GCC fails to tail call unless variable wrapped in a
                    block
           Product: gcc
           Version: 14.1.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: ipa
          Assignee: unassigned at gcc dot gnu.org
          Reporter: mikolajpirog at gmail dot com
  Target Milestone: ---

GCC 14.1 fails to perform a tail call optimization when a function has a
variable with a non-trivial dtor, unless the variable is put inside a block
statement. Putting the variable inside this block does not change the semantics
of the function, but makes the dtor fire up before calling the next function,
so TCO may be performed. Compiler explorer: https://godbolt.org/z/r6TvsG3W4