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Date: Tue, 17 Aug 2004 02:30:00 -0000
From: "emild at collectivestudios dot com" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Message-ID: <20040817023036.17056.emild@collectivestudios.com>
Reply-To: gcc-bugzilla@gcc.gnu.org
Subject: [Bug c++/17056] New: ambiguous function call problem
X-Bugzilla-Reason: CC
X-SW-Source: 2004-08/txt/msg01601.txt.bz2
List-Id: <gcc-bugs.sourceware.org>

The following code should compile with no errors:

	template <class T>
	void foo( T const & );

	template <class T,int S>
	void foo( T (&)[S] );

	void bar( unsigned char const (&x)[16] )
		{
			foo(x);
		}

G++ incorrectly reports the following errors:

	In function `void bar(const unsigned char (&)[16])':
	error: call of overloaded `foo(const unsigned char[16])' is ambiguous
	error: candidates are: void foo(const T&) 
		[with T = unsigned char[16]]
	error:                 void foo(T (&)[S]) 
		[with T = const unsigned char, int S = 16]

Both Comeau C++ and VC 7.1 compile the code with no errors. Indeed, an 
instantiation of the second foo template with T=unsigned char const and S=16 is 
a perfect match for the call.

-- 
           Summary: ambiguous function call problem
           Product: gcc
           Version: 3.3.1
            Status: UNCONFIRMED
          Severity: normal
          Priority: P2
         Component: c++
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: emild at collectivestudios dot com
                CC: gcc-bugs at gcc dot gnu dot org


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=17056