https://gcc.gnu.org/bugzilla/show_bug.cgi?id=77689
Andrew Pinski <pinskia at gcc dot gnu.org> changed: What |Removed |Added ---------------------------------------------------------------------------- Target Milestone|--- |15.0 Resolution|--- |FIXED Status|NEW |RESOLVED --- Comment #19 from Andrew Pinski <pinskia at gcc dot gnu.org> --- for the original testcase in comment #0, renaming main to f and changing the return type to void, the trunk of GCC can optimize the function to just a return now. Note the renaming is because of inlining heurstics and the call to reserve is not being inlined. So we can close this as fixed.