1 files changed, 49 insertions, 0 deletions
diff --git a/gcc/testsuite/gfortran.dg/interface_assignment_2.f90 b/gcc/testsuite/gfortran.dg/interface_assignment_2.f90
new file mode 100644
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+++ b/gcc/testsuite/gfortran.dg/interface_assignment_2.f90
@@ -0,0 +1,49 @@
+! { dg-do run }
+! Checks the fix for PR32842, in which the interface assignment
+! below caused a segfault.  This testcase is reduced from vst_2.f95
+! in the iso_varying_string testsuite, from Lawrie Schonfelder
+!
+! Contributed by Tobias Burnus <burnus@gcc.gnu.org>
+!
+module iso_varying_string
+  implicit none
+  integer, parameter :: GET_BUFFER_LEN = 256
+  type varying_string
+     character(LEN=1), dimension(:), allocatable :: chars
+  end type varying_string
+  interface assignment(=)
+     module procedure op_assign_VS_CH
+  end interface assignment(=)
+contains
+  elemental subroutine op_assign_VS_CH (var, expr)
+    type(varying_string), intent(out) :: var
+    character(LEN=*), intent(in)      :: expr
+    var = var_str(expr)
+  end subroutine op_assign_VS_CH
+  elemental function var_str (chr) result (string)
+    character(LEN=*), intent(in) :: chr
+    type(varying_string)         :: string
+    integer                      :: length
+    integer                      :: i_char
+    length = LEN(chr)
+    ALLOCATE(string%chars(length))
+    forall(i_char = 1:length)
+       string%chars(i_char) = chr(i_char:i_char)
+    end forall
+  end function var_str
+end module iso_varying_string
+
+PROGRAM VST_2
+  USE ISO_VARYING_STRING
+  IMPLICIT NONE
+  CHARACTER(LEN=5)     :: char_arb(2)
+  CHARACTER(LEN=1)     :: char_elm(10)
+  equivalence (char_arb, char_elm)
+  type(VARYING_STRING) :: str_ara(2)
+  char_arb(1)= "Hello"
+  char_arb(2)= "World"
+  str_ara = char_arb
+  if (any (str_ara(1)%chars(1:5) .ne. char_elm(1:5))) call abort
+  if (any (str_ara(2)%chars(1:5) .ne. char_elm(6:10))) call abort
+END PROGRAM VST_2
+! { dg-final { cleanup-modules "iso_varying_string" } }