[C++ Patch, committed] PR 28501

[Paolo Carlini]

Hi,

tested x86_64-linux, approved by Jason on the audit trail, committed to 
mainline.

Thanks!
Paolo.

///////////////////////
/cp
2011-05-03  Paolo Carlini  <paolo.carl...@oracle.com>

        PR c++/28501
        * call.c (add_builtin_candidate): Handle REALPART_EXPR and
        IMAGPART_EXPR.

/testsuite
2011-05-03  Paolo Carlini  <paolo.carl...@oracle.com>

        PR c++/28501
        * g++.dg/ext/complex9.C: New.
Index: testsuite/g++.dg/ext/complex9.C
===================================================================
--- testsuite/g++.dg/ext/complex9.C     (revision 0)
+++ testsuite/g++.dg/ext/complex9.C     (revision 0)
@@ -0,0 +1,8 @@
+// PR c++/28501
+
+struct A
+{
+  operator int();
+};
+
+int i = __real__ A();
Index: cp/call.c
===================================================================
--- cp/call.c   (revision 173336)
+++ cp/call.c   (working copy)
@@ -1,6 +1,7 @@
 /* Functions related to invoking methods and overloaded functions.
    Copyright (C) 1987, 1992, 1993, 1994, 1995, 1996, 1997, 1998,
-   1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010
+   1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009,
+   2010, 2011
    Free Software Foundation, Inc.
    Contributed by Michael Tiemann (tiem...@cygnus.com) and
    modified by Brendan Kehoe (bren...@cygnus.com).
@@ -2586,6 +2587,12 @@ add_builtin_candidate (struct z_candidate **candid
         types are TYPE2.  */
       break;
 
+    case REALPART_EXPR:
+    case IMAGPART_EXPR:
+      if (ARITHMETIC_TYPE_P (type1))
+       break;
+      return;
+ 
     default:
       gcc_unreachable ();
     }