[Bug fortran/115390] Bogus -Wuninitialized warning when using CHARACTER(*) argument in BIND(C) function
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=115390 anlauf at gcc dot gnu.org changed: What|Removed |Added Resolution|--- |FIXED Status|NEW |RESOLVED --- Comment #6 from anlauf at gcc dot gnu.org --- Fixed.
[Bug fortran/115390] Bogus -Wuninitialized warning when using CHARACTER(*) argument in BIND(C) function
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=115390 --- Comment #5 from GCC Commits --- The master branch has been updated by Harald Anlauf : https://gcc.gnu.org/g:954f9011c4923b72f42cc6ca8460333e7c7aad98 commit r15-1449-g954f9011c4923b72f42cc6ca8460333e7c7aad98 Author: Harald Anlauf Date: Tue Jun 18 21:57:19 2024 +0200 Fortran: fix for CHARACTER(len=*) dummies with bind(C) [PR115390] gcc/fortran/ChangeLog: PR fortran/115390 * trans-decl.cc (gfc_conv_cfi_to_gfc): Move derivation of type sizes for character via gfc_trans_vla_type_sizes to after character length has been set. gcc/testsuite/ChangeLog: PR fortran/115390 * gfortran.dg/bind_c_char_11.f90: New test.
[Bug fortran/115390] Bogus -Wuninitialized warning when using CHARACTER(*) argument in BIND(C) function
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=115390 anlauf at gcc dot gnu.org changed: What|Removed |Added Priority|P3 |P4 Assignee|unassigned at gcc dot gnu.org |anlauf at gcc dot gnu.org --- Comment #4 from anlauf at gcc dot gnu.org --- Submitted: https://gcc.gnu.org/pipermail/fortran/2024-June/060591.html
[Bug fortran/115390] Bogus -Wuninitialized warning when using CHARACTER(*) argument in BIND(C) function
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=115390
anlauf at gcc dot gnu.org changed:
What|Removed |Added
CC||anlauf at gcc dot gnu.org
--- Comment #3 from anlauf at gcc dot gnu.org ---
Created attachment 58455
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=58455=edit
Patch
The attached patch fixes the ordering such that the bogus warning does no
longer appear and gives for the reduced test:
__attribute__((fn spec (". r ")))
void bar (struct CFI_cdesc_t00 & restrict _s)
{
integer(kind=8) s.0;
character(kind=1)[1:s.0] * s;
bitsizetype D.4279;
sizetype D.4280;
s.0 = (integer(kind=8)) _s->elem_len;
D.4279 = (bitsizetype) (sizetype) NON_LVALUE_EXPR * 8;
D.4280 = (sizetype) NON_LVALUE_EXPR ;
s = (character(kind=1)[1:s.0] *) _s->base_addr;
foo ((character(kind=1)[1:s.0] *) s, s.0);
}
Currently regtesting ...
[Bug fortran/115390] Bogus -Wuninitialized warning when using CHARACTER(*) argument in BIND(C) function
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=115390
--- Comment #2 from anlauf at gcc dot gnu.org ---
Slightly rewritten (we only need the interface of foo):
module test
implicit none
interface
subroutine foo(s)
character(*), intent(in) :: s
end subroutine foo
end interface
contains
subroutine bar(s) bind(c)
character(*), intent(in) :: s
call foo(s)
end
end
This gives:
__attribute__((fn spec (". r ")))
void bar (struct CFI_cdesc_t00 & restrict _s)
{
integer(kind=8) s.0;
character(kind=1)[1:s.0] * s;
bitsizetype D.4279;
sizetype D.4280;
D.4279 = (bitsizetype) (sizetype) NON_LVALUE_EXPR * 8;
D.4280 = (sizetype) NON_LVALUE_EXPR ;
s.0 = (integer(kind=8)) _s->elem_len;
s = (character(kind=1)[1:s.0] *) _s->base_addr;
foo ((character(kind=1)[1:s.0] *) s, s.0);
}
[Bug fortran/115390] Bogus -Wuninitialized warning when using CHARACTER(*) argument in BIND(C) function
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=115390 Andrew Pinski changed: What|Removed |Added Status|UNCONFIRMED |NEW Last reconfirmed||2024-06-07 Keywords||diagnostic, wrong-code Ever confirmed|0 |1 --- Comment #1 from Andrew Pinski --- Confirmed.
