[Bug tree-optimization/119718] __attribute__((musttail)) affects whether -foptimize-tail-calls will in fact optimize a tail call

[lucier at math dot purdue.edu via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=119718

--- Comment #1 from lucier at math dot purdue.edu ---
Created attachment 61068
  --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=61068&action=edit
test file

This is the file with the single incident of __attribute__((musttail)).  If you
remove __attribute__((musttail)), then the tail call is not optimized.