[Bug tree-optimization/108091] '-Wformat-overflow' determines incorrect size when printing strings from an array of structs

[pinskia at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=108091

Andrew Pinski <pinskia at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
   Last reconfirmed|                            |2022-12-14
     Ever confirmed|0                           |1
             Status|UNCONFIRMED                 |NEW

--- Comment #1 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
IV-OPTS produces:
  <bb 3> [local count: 858993457]:
  # ivtmp.10_13 = PHI <ivtmp.10_14(5), ivtmp.10_15(2)>
  _1 = (char[64] *) ivtmp.10_13;
  __builtin_strcpy (&str, _1);
  ivtmp.10_14 = ivtmp.10_13 + 68;
  if (ivtmp.10_14 != _17)
    goto <bb 5>; [80.00%]
  else
    goto <bb 4>; [20.00%]

  <bb 5> [local count: 687194763]:
  goto <bb 3>; [100.00%]

Which confuses the warning pass.