[Bug tree-optimization/118431] [Feature request]: warn about escaped local variables in musttail instead of error-ing

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

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=118431

--- Comment #2 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
I rather keep the error since it might allow someone to use musttail
incorrectly. Where the variable actually does escape.