re PR fortran/43199 ([OOP] ICE when reading module file: find_array_spec(): Component not found)

2010-03-01  Tobias Burnus  <burnus@net-b.de>

        PR fortran/43199
        * resolve.c (find_array_spec): Handle REF_COMPONENT with
        CLASS components.

2010-03-01  Tobias Burnus  <burnus@net-b.de>

        PR fortran/43199
        * gfortran.dg/module_read_2.f90: New test.

From-SVN: r157133

gcc/fortran/ChangeLog

@@ -1,3 +1,9 @@
+2010-03-01  Tobias Burnus  <burnus@net-b.de>
+
+	PR fortran/43199
+	* resolve.c (find_array_spec): Handle REF_COMPONENT with
+	CLASS components.
+
 2010-02-28  Tobias Burnus  <burnus@net-b.de>
 
 	PR fortran/43205

gcc/fortran/resolve.c

@@ -4007,6 +4007,9 @@ find_array_spec (gfc_expr *e)
 	if (derived == NULL)
 	  derived = e->symtree->n.sym->ts.u.derived;
 
+	if (derived->attr.is_class)
+	  derived = derived->components->ts.u.derived;
+
 	c = derived->components;
 
 	for (; c; c = c->next)

gcc/testsuite/ChangeLog

@@ -1,3 +1,8 @@
+2010-03-01  Tobias Burnus  <burnus@net-b.de>
+
+	PR fortran/43199
+	* gfortran.dg/module_read_2.f90: New test.
+
 2010-02-27  Mark Mitchell  <mark@codesourcery.com>
 
 	PR c++/42748

gcc/testsuite/gfortran.dg/module_read_2.f90

@@ -0,0 +1,30 @@
+! { dg-do run }
+!
+! PR fortran/43199
+!
+! This program gave an ICE due to reading the REF_COMPONENT with CLASS.
+!
+module m_string
+  type t_string
+      character, dimension(:), allocatable :: string
+  end type t_string
+contains
+pure function string_to_char ( s ) result(res)
+  class(t_string), intent(in) :: s
+  character(len=size(s%string)) :: res
+  integer :: i
+  do i = 1,len(res)
+    res(i:i) = s%string(i)
+  end do
+end function string_to_char
+end module m_string
+
+use m_string
+type(t_string) :: str
+allocate(str%string(5))
+str%string = ['H','e','l','l','o']
+if (len (string_to_char (str)) /= 5) call abort ()
+if (string_to_char (str) /= "Hello") call abort ()
+end
+
+! { dg-final { cleanup-modules "m_string" } }