https://gcc.gnu.org/bugzilla/show_bug.cgi?id=67219
--- Comment #4 from Thomas Koenig <tkoenig at gcc dot gnu.org> --- The backtrace shows where this comes from: #0 gfc_warning_now (opt=201, gmsgid=0x1437d10 "Change of value in conversion from %qs to %qs at %L") at ../../trunk/gcc/fortran/error.c:1187 #1 0x000000000061a05d in gfc_int2real (src=0x1ea1de0, kind=4) at ../../trunk/gcc/fortran/arith.c:2079 #2 0x00000000006971b0 in match_sym_complex_part (result=0x7fffffffce60) at ../../trunk/gcc/fortran/primary.c:1286 #3 match_complex_part (result=0x7fffffffce60) at ../../trunk/gcc/fortran/primary.c:1311 #4 0x0000000000697262 in match_complex_constant (result=result@entry=0x7fffffffd0f0) at ../../trunk/gcc/fortran/primary.c:1344 #5 0x0000000000697448 in gfc_match_literal_constant (result=result@entry=0x7fffffffd0f0, signflag=signflag@entry=0) at ../../trunk/gcc/fortran/primary.c:1448 #6 0x0000000000675c33 in match_primary (result=0x7fffffffd0f0) at ../../trunk/gcc/fortran/matchexp.c:149 #7 match_level_1 (result=<synthetic pointer>) at ../../trunk/gcc/fortran/matchexp.c:211 Seems like the gfc_warning_now isn't appropriate here. I will see what happens when this is converted to gfc_warning.