https://gcc.gnu.org/bugzilla/show_bug.cgi?id=114133
--- Comment #3 from Gaius Mulley <gaius at gcc dot gnu.org> --- At a guess the problem was the ZTyped constant (1 and 5). Now the gimple IR shows these constants as integers: $ cat callingc10.mod.095i.comdats PROC _M2_callingc10_init (INTEGER argc, PROC * argv, PROC * envp) { INTEGER D.676; INTEGER D.675; INTEGER D.674; INTEGER _T35.0_1; PROC * _T36.1_2; INTEGER _T34.2_3; INTEGER _4; INTEGER _T37.3_5; INTEGER _T39.4_6; PROC * _T40.5_7; INTEGER _T38.6_8; INTEGER _9; INTEGER _T41.7_10; INTEGER _T43.8_11; PROC * _T44.9_12; INTEGER _T42.10_13; INTEGER _14; INTEGER _20; INTEGER _26; INTEGER _32; <bb 2> : _T34 = 1; _T35 = 5; _T36 = "hello"; _T35.0_1 = _T35; _T36.1_2 = _T36; _T34.2_3 = _T34; _20 = funcptr (_T34.2_3, _T36.1_2, _T35.0_1); _4 = _20; _T37 = _4; _T37.3_5 = _T37;