1! { dg-do compile }
2! PR 38536 - don't reject substring of length one
3! Original test case by Scot Breitenfeld
4SUBROUTINE test(buf, buf2, buf3, n)
5  USE, INTRINSIC :: ISO_C_BINDING
6  IMPLICIT NONE
7  CHARACTER(LEN=*), INTENT(INOUT), TARGET :: buf
8  INTEGER, INTENT(in) :: n
9  CHARACTER(LEN=*), INTENT(INOUT), DIMENSION(1:2), TARGET :: buf2
10  CHARACTER(LEN=3), TARGET :: buf3
11  TYPE(C_PTR) :: f_ptr
12
13  f_ptr = C_LOC(buf(1:1))      ! Used to fail
14                               ! Error: CHARACTER argument 'buf' to 'c_loc'
15                               ! at (1) must have a length of 1
16  f_ptr = C_LOC(buf2(1)(1:1))  ! PASSES
17
18  f_ptr = C_LOC(buf(n:n))
19
20  f_ptr = C_LOC(buf3(3:))
21END SUBROUTINE test
22