1 files changed, 55 insertions, 0 deletions
diff --git a/gcc/testsuite/gfortran.dg/pr21177.f90 b/gcc/testsuite/gfortran.dg/pr21177.f90
new file mode 100644
index 000000000..48d353123
--- /dev/null
+++ b/gcc/testsuite/gfortran.dg/pr21177.f90
@@ -0,0 +1,55 @@
+! { dg-do run }
+! PR fortran/21177
+module mymod
+  interface tt
+    module procedure tt_i, tt_r, tt_l, tt_c4, tt_c8
+  end interface tt
+contains
+  function tt_l(x) result(y)
+    integer :: y
+    logical, pointer :: x
+    y = 0
+  end function
+  function tt_i(x) result(y)
+    integer :: y
+    integer, pointer :: x
+    y = 1
+  end function
+  function tt_r(x) result(y)
+    integer :: y
+    real, pointer :: x
+    y = 2
+  end function
+  function tt_c4(x) result(y)
+    integer :: y
+    complex(4), pointer :: x
+    y = 3
+  end function
+  function tt_c8(x) result(y)
+    integer :: y
+    complex(8), pointer :: x
+    y = 4
+  end function
+end module mymod
+
+program test
+  use mymod
+  logical, pointer :: l
+  integer, pointer :: i
+  real, pointer :: r
+  complex(4), pointer :: c4
+  complex(8), pointer :: c8
+  
+  if (tt(l) /= 0) call abort()
+  if (tt(i) /= 1) call abort()
+  if (tt(r) /= 2) call abort()
+  if (tt(c4) /= 3) call abort()
+  if (tt(c8) /= 4) call abort()
+  if (tt(null(l)) /= 0) call abort()
+  if (tt(null(i)) /= 1) call abort()
+  if (tt(null(r)) /= 2) call abort()
+  if (tt(null(c4)) /= 3) call abort()
+  if (tt(null(c8)) /= 4) call abort()
+end program test
+
+! { dg-final { cleanup-modules "mymod" } }