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[Bug fortran/78757] [7 Regression] ICE with function returning a pointer to a character


https://gcc.gnu.org/bugzilla/show_bug.cgi?id=78757

--- Comment #3 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
So the bug is that nothing has gimplified the MAX_EXPR in:
  character(kind=1)[1:MAX_EXPR <_1, 0>] * pstr.0;
  struct FRAME.MAIN__ FRAME.3;
  character(kind=1)[1:30] * s;
  integer(kind=4) _1;
  integer(kind=4) _2;
  integer(kind=8) * _5;
  integer(kind=8) _6;

  <bb 2> [0.0%]:
  FRAME.3.FRAME_BASE.PARENT = 0B;
  _5 = &C.3472;
  _6 = *_5;
  _1 = (integer(kind=4)) _6;
  _2 = MAX_EXPR <_1, 0>;
  f4 (&pstr.0, _2, _5); [static-chain: &FRAME.3]
  s_8 = pstr.0;
  pstr.0 ={v} {CLOBBER};
  GIMPLE_NOP
  return;
or something different?
If this, this has been broken by the r117493 change.  So perhaps we need some
DECL_EXPR somewhere, but not sure which.

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