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.