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

bernd.edlinger at hotmail dot de gcc-bugzilla@gcc.gnu.org
Tue Jul 17 18:02:00 GMT 2018


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

--- Comment #17 from Bernd Edlinger <bernd.edlinger at hotmail dot de> ---
Martin,

in expr.c at string_constant() there is an impossible check:

  if (TREE_CODE (init) == CONSTRUCTOR)
    {
      if (TREE_CODE (arg) != ARRAY_REF
          && TREE_CODE (arg) == COMPONENT_REF
          && TREE_CODE (arg) == MEM_REF)
        return NULL_TREE;

it can't be COMPONENT_REF and MEM_REF at the same time.


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