re PR c++/28996 (ICE with statement forming unused static member function reference)

        PR c++/28996
        * cvt.c (convert_to_void): Strip COMPONENT_REF to functions.

From-SVN: r116800

gcc/cp/ChangeLog

+2006-09-09  Jason Merrill  <jason@redhat.com>
+
+	PR c++/28996
+	* cvt.c (convert_to_void): Strip COMPONENT_REF to functions.
+
 2006-09-08  Volker Reichelt  <reichelt@igpm.rwth-aachen.de>
 
 	PR c++/28858

gcc/cp/cvt.c

@@ -927,9 +927,13 @@ convert_to_void (tree expr, const char *implicit)
 	expr = void_zero_node;
       }
     else if (implicit && probe == expr && is_overloaded_fn (probe))
-      /* Only warn when there is no &.  */
-      warning (0, "%s is a reference, not call, to function %qE",
-		  implicit, expr);
+      {
+	/* Only warn when there is no &.  */
+	warning (0, "%s is a reference, not call, to function %qE",
+		 implicit, expr);
+	if (TREE_CODE (expr) == COMPONENT_REF)
+	  expr = TREE_OPERAND (expr, 0);
+      }
   }
 
   if (expr != error_mark_node && !VOID_TYPE_P (TREE_TYPE (expr)))

gcc/testsuite/g++.dg/warn/noeffect8.C

-// PR c++/26696
+// PR c++/26696, 28996
 
 struct A
 {
@@ -9,4 +9,5 @@ int main()
 {
   A a; 
   a.f;    			// { dg-warning "not call" }
+  A().f;  			// { dg-warning "not call" }
 }