From b9445edd9a0bf06e1a06be55afb3b53f1bdeaa49 Mon Sep 17 00:00:00 2001
From: Mark Mitchell <mmitchel@gcc.gnu.org>
Date: Mon, 4 Aug 2003 11:30:06 +0000
Subject: [PATCH] re PR c++/11713 (declaration conflicts)

	PR c++/11713
	* search.c (setup_class_bindings): Handle conversion operators
	specially.

	PR c++/11713
	* g++.dg/overload/operator1.C: New test.

From-SVN: r70136
---
 gcc/cp/search.c                           | 14 ++++++++++
 gcc/testsuite/g++.dg/overload/operator1.C | 34 +++++++++++++++++++++++
 2 files changed, 48 insertions(+)
 create mode 100644 gcc/testsuite/g++.dg/overload/operator1.C

diff --git a/gcc/cp/search.c b/gcc/cp/search.c
index 3f8e2daf8a8..c6463751926 100644
--- a/gcc/cp/search.c
+++ b/gcc/cp/search.c
@@ -2123,6 +2123,20 @@ setup_class_bindings (tree name, int type_binding_p)
 	  if (BASELINK_P (value_binding))
 	    /* NAME is some overloaded functions.  */
 	    value_binding = BASELINK_FUNCTIONS (value_binding);
+	  /* Two conversion operators that convert to the same type
+	     may have different names.  (See
+	     mangle_conv_op_name_for_type.)  To avoid recording the
+	     same conversion operator declaration more than once we
+	     must check to see that the same operator was not already
+	     found under another name.  */
+	  if (IDENTIFIER_TYPENAME_P (name)
+	      && is_overloaded_fn (value_binding))
+	    {
+	      tree fns;
+	      for (fns = value_binding; fns; fns = OVL_NEXT (fns))
+		if (IDENTIFIER_CLASS_VALUE (DECL_NAME (OVL_CURRENT (fns))))
+		  return;
+	    }
 	  pushdecl_class_level (value_binding);
 	}
     }
diff --git a/gcc/testsuite/g++.dg/overload/operator1.C b/gcc/testsuite/g++.dg/overload/operator1.C
new file mode 100644
index 00000000000..f4d1f53f14e
--- /dev/null
+++ b/gcc/testsuite/g++.dg/overload/operator1.C
@@ -0,0 +1,34 @@
+typedef struct _GdkDrawable GdkDrawable; 
+typedef struct _GdkDrawable GdkBitmap; 
+typedef struct _GdkDrawable GdkPixmap; 
+ 
+class Drawable 
+{ 
+public: 
+ operator GdkDrawable* () const; 
+}; 
+ 
+ 
+class Pixmap : public Drawable 
+{ 
+public: 
+ operator GdkPixmap* () const; 
+ 
+}; 
+ 
+ 
+class Bitmap : public Pixmap 
+{ 
+public: 
+  operator GdkBitmap* () const; 
+ 
+}; 
+ 
+class Event 
+{ 
+}; 
+ 
+Bitmap::operator GdkBitmap* () const 
+{ 
+ return  0; 
+} 
-- 
2.30.2