Wdtor1.C: Declare template in system header with explicit C++ linkage.

	* g++.dg/warn/Wdtor1.C: Declare template in system header with
	explicit C++ linkage.

From-SVN: r97955

gcc/testsuite/ChangeLog

+2005-04-10  Mark Mitchell  <mark@codesourcery.com>
+
+	* g++.dg/warn/Wdtor1.C: Declare template in system header with
+	explicit C++ linkage.
+
 2005-04-10  Francois-Xavier Coudert  <coudert@clipper.ens.fr>
 
 	* gfortran.dg/pr17229.f: Take care of the new obsolescence

gcc/testsuite/g++.dg/warn/Wdtor1.C

@@ -5,10 +5,14 @@
 # 1 "<command line>"
 # 1 "t.cc"
 # 1 "include/t.h" 1 3 4
+// Declare the template with explicit C++ linkage in case system
+// headers have implicit C linkage.
+extern "C++" {
 template <int> class t
 {
   virtual void f();
 };
+}
 # 2 "t.cc" 2
 
 void f(void)