https://gcc.gnu.org/bugzilla/show_bug.cgi?id=110360
--- Comment #17 from anlauf at gcc dot gnu.org ---
It appears that gfc_string_to_single_character does not fulfill my expectation.
The following ICEs now:
subroutine s
implicit none
interface
subroutine ref (c)
character :: c
end
subroutine val (c)
character, value :: c
end
end interface
character(len=1) :: c = "A"
character(len=10) :: d = "D"
call ref (c)
call ref (d)
call ref (c // d)
call val (c // d) ! OK
call val (c) ! bad (ok for 13-branch)
call val (d) ! bad
end
The tree-dump shows that 13-branch generates correct code only for the
indicated call val (c), while the other two are wrong.
Current 14-branch is correct for the case with the temporary e.g. for the
string concatenation, and the other two are a complete fail...
Running under gdb seems to tell that gfc_string_to_single_character returns
a NULL_TREE for yet unknown reason.
