1 files changed, 55 insertions, 0 deletions
diff --git a/gcc/testsuite/gfortran.dg/alloc_comp_assign_6.f90 b/gcc/testsuite/gfortran.dg/alloc_comp_assign_6.f90
new file mode 100644
index 000000000..4e8edc228
--- /dev/null
+++ b/gcc/testsuite/gfortran.dg/alloc_comp_assign_6.f90
@@ -0,0 +1,55 @@
+! { dg-do run }
+! Tests the fix for pr32880, in which 'res' was deallocated
+! before it could be used in the concatenation.
+! Adapted from vst28.f95, in Lawrie Schonfeld's iso_varying_string
+! testsuite, by Tobias Burnus.
+!
+module iso_varying_string
+  type varying_string
+     character(LEN=1), dimension(:), allocatable :: chars
+  end type varying_string
+  interface assignment(=)
+     module procedure op_assign_VS_CH
+  end interface assignment(=)
+  interface operator(//)
+     module procedure op_concat_VS_CH
+  end interface operator(//)
+contains
+  elemental subroutine op_assign_VS_CH (var, exp)
+    type(varying_string), intent(out) :: var
+    character(LEN=*), intent(in)      :: exp
+    integer                      :: length
+    integer                      :: i_char
+    length = len(exp)
+    allocate(var%chars(length))
+    forall(i_char = 1:length)
+       var%chars(i_char) = exp(i_char:i_char)
+    end forall
+  end subroutine op_assign_VS_CH
+  elemental function op_concat_VS_CH (string_a, string_b) result (concat_string)
+    type(varying_string), intent(in) :: string_a
+    character(LEN=*), intent(in)     :: string_b
+    type(varying_string)             :: concat_string
+    len_string_a = size(string_a%chars)
+    allocate(concat_string%chars(len_string_a+len(string_b)))
+    if (len_string_a >0) &
+       concat_string%chars(:len_string_a) = string_a%chars
+    if (len (string_b) > 0) &
+       concat_string%chars(len_string_a+1:) = string_b
+  end function op_concat_VS_CH
+end module iso_varying_string
+
+program VST28
+  use iso_varying_string
+  character(len=10) :: char_a
+  type(VARYING_STRING) :: res
+  char_a = "abcdefghij"
+  res = char_a(5:5)
+  res = res//char_a(6:6)
+  if(size(res%chars) /= 2 .or. any(res%chars /= ['e','f'])) then
+    write(*,*) 'ERROR: should be ef, got: ', res%chars, size(res%chars)
+    call abort ()
+  end if
+end program VST28
+
+! { dg-final { cleanup-modules "iso_varying_string" } }