https://gcc.gnu.org/bugzilla/show_bug.cgi?id=113799
--- Comment #5 from anlauf at gcc dot gnu.org ---
Even worse: it's the unary minus:
print *, -someInf
pr113799.f90:5:19:
5 | print *, -someInf
| 1
Error: Arithmetic overflow at (1)
free(): invalid pointer
f951: internal compiler error: Aborted
