Re: [Fortran, patch, pr71936, v1] [6/7 Regression] ICE in wide_int_to_tree, at tree.c:1487

[Andre Vehreschild <vehre at gmx dot de>]

Hi Paul,

thanks for the review. Committed to trunk as r239237.

I will commit to gcc-6 in one week.

Regards,
	Andre

On Mon, 8 Aug 2016 11:33:06 +0200
Paul Richard Thomas <paul.richard.thomas@gmail.com> wrote:

> Hi Andre,
> 
> That looks fine to me. OK for 6-branch and trunk.
> 
> Thanks for the patch.
> 
> Paul
> 
> On 7 August 2016 at 15:32, Andre Vehreschild <vehre@gmx.de> wrote:
> > Hi all,
> >
> > attached patch fixes the ICE by ensuring that when the SOURCE=/MOLD=
> > expression is an array-valued function call with no ref, the ref of
> > object to allocate is taken. The array properties nevertheless are
> > taken from the function's result.
> >
> > Bootstraps and regtests ok on x86_64-linux-gnu/F23. Ok for trunk and
> > gcc-6?
> >
> > Regards,
> >         Andre
> > --
> > Andre Vehreschild * Email: vehre ad gmx dot de  
> 
> 
> 


-- 
Andre Vehreschild * Email: vehre ad gmx dot de 

Index: gcc/fortran/ChangeLog
===================================================================
--- gcc/fortran/ChangeLog	(Revision 239236)
+++ gcc/fortran/ChangeLog	(Arbeitskopie)
@@ -1,5 +1,11 @@
 2016-08-08  Andre Vehreschild  <vehre@gcc.gnu.org>
 
+	PR fortran/71936
+	* trans-array.c (gfc_array_allocate): When SOURCE= is a function
+	stick with the ref of the object to allocate.
+
+2016-08-08  Andre Vehreschild  <vehre@gcc.gnu.org>
+
 	PR fortran/72698
 	* trans-stmt.c (gfc_trans_allocate): Prevent generating code for
 	copy of zero sized string and with it an ICE.
Index: gcc/fortran/trans-array.c
===================================================================
--- gcc/fortran/trans-array.c	(Revision 239235)
+++ gcc/fortran/trans-array.c	(Arbeitskopie)
@@ -5431,12 +5431,19 @@
 
   if (ref->u.ar.type == AR_FULL && expr3 != NULL)
     {
+      gfc_ref *old_ref = ref;
       /* F08:C633: Array shape from expr3.  */
       ref = expr3->ref;
 
       /* Find the last reference in the chain.  */
       if (!retrieve_last_ref (&ref, &prev_ref))
-	return false;
+	{
+	  if (expr3->expr_type == EXPR_FUNCTION
+	      && gfc_expr_attr (expr3).dimension)
+	    ref = old_ref;
+	  else
+	    return false;
+	}
       alloc_w_e3_arr_spec = true;
     }
 
Index: gcc/testsuite/ChangeLog
===================================================================
--- gcc/testsuite/ChangeLog	(Revision 239236)
+++ gcc/testsuite/ChangeLog	(Arbeitskopie)
@@ -1,5 +1,10 @@
 2016-08-08  Andre Vehreschild  <vehre@gcc.gnu.org>
 
+	PR fortran/71936
+	* gfortran.dg/allocate_with_source_21.f03: New test.
+
+2016-08-08  Andre Vehreschild  <vehre@gcc.gnu.org>
+
 	PR fortran/72698
 	* gfortran.dg/allocate_with_source_20.f03: New test.
 
Index: gcc/testsuite/gfortran.dg/allocate_with_source_21.f03
===================================================================
--- gcc/testsuite/gfortran.dg/allocate_with_source_21.f03	(nicht existent)
+++ gcc/testsuite/gfortran.dg/allocate_with_source_21.f03	(Arbeitskopie)
@@ -0,0 +1,52 @@
+! { dg-do compile }
+
+! Check fix for pr71936.
+! Contributed by Gerhard Steinmetz
+
+program p
+  type t
+  end type
+
+  call test2()
+  call test4()
+  call test1()
+  call test3()
+contains
+  function f_p()
+    class(t), pointer :: f_p(:)
+    nullify(f_p)
+  end
+
+  function f_a()
+    class(t), allocatable :: f_a(:)
+  end
+
+  subroutine test1()
+    class(t), allocatable :: x(:)
+    allocate (x, mold=f_a())
+    deallocate (x)
+    allocate (x, source=f_a())
+  end subroutine
+
+  subroutine test2()
+    class(t), pointer :: x(:)
+    allocate (x, mold=f_p())
+    deallocate (x)
+    allocate (x, source=f_p())
+  end
+
+  subroutine test3()
+    class(t), pointer :: x(:)
+    allocate (x, mold=f_a())
+    deallocate (x)
+    allocate (x, source=f_a())
+  end
+
+  subroutine test4()
+    class(t), allocatable :: x(:)
+    allocate (x, mold=f_p())
+    deallocate (x)
+    allocate (x, source=f_p())
+  end subroutine
+end
+