Dear All, This patch is verging on obvious. The PR was originally, incorrectly blocking PR87477 and the testcase has remained in my 'associate' directory. I thought that it is time to get shot of it!
Is there a better way to detect a type(c_ptr) formal argument? Subject to advice on the question, OK for trunk? Paul
diff --git a/gcc/fortran/trans-expr.cc b/gcc/fortran/trans-expr.cc
index 45a984b6bdb..0823efd5abc 100644
--- a/gcc/fortran/trans-expr.cc
+++ b/gcc/fortran/trans-expr.cc
@@ -7353,6 +7353,8 @@ gfc_conv_procedure_call (gfc_se * se, gfc_symbol * sym,
need the length. */
if (parmse.string_length != NULL_TREE
&& !sym->attr.is_bind_c
+ && !(fsym && fsym->ts.type == BT_DERIVED
+ && !strcmp (fsym->ts.u.derived->name, "c_ptr"))
&& !(fsym && UNLIMITED_POLY (fsym)))
vec_safe_push (stringargs, parmse.string_length);
Change.Logs
Description: Binary data
! { dg-do run }
!
! Contributed by Jeffrey Hill <jeffrey.p.h...@nasa.gov>
!
module associate_ptr
use iso_c_binding
contains
subroutine c_f_strpointer(cptr, ptr2)
type(c_ptr), target, intent(in) :: cptr
character(kind=c_char,len=4), pointer :: ptr1
character(kind=c_char,len=:), pointer, intent(out) :: ptr2
call c_f_pointer(cptr, ptr1)
if (ptr1 .ne. 'abcd') stop 1
ptr2 => ptr1 ! Failed here
end subroutine
end module
program test_associate_ptr
use associate_ptr
character(kind=c_char, len=1), target :: char_array(7)
character(kind=c_char,len=:), pointer :: ptr2
char_array = ['a', 'b', 'c', 'd', c_null_char, 'e', 'f']
! The first argument was providing a constant hidden string length => segfault
call c_f_strpointer(c_loc(char_array), ptr2)
if (ptr2 .ne. 'abcd') stop 2
end program
