[Bug tree-optimization/86532] [9 Regression] Wrong code due to a wrong strlen folding starting with r262522

[bernd.edlinger at hotmail dot de]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=86532

--- Comment #26 from Bernd Edlinger <bernd.edlinger at hotmail dot de> ---
../../gcc-9-20180715-1/gcc/expr.c:11360 is:

      while (TREE_CODE (chartype) != INTEGER_TYPE)
        chartype = TREE_TYPE (chartype);