re PR c++/9154 (poor error message for ">>" vs. "> >" for nested template args)

	PR c++/9154
	* g++.dg/template/error10.C: New test.

From-SVN: r74777

gcc/testsuite/ChangeLog

+2003-12-18  Giovanni Bajo  <giovannibajo@gcc.gnu.org>
+
+	PR c++/9154
+	* g++.dg/template/error10.C: New test.
+
 2003-12-18  Eric Botcazou  <ebotcazou@libertysurf.fr>
 
 	* g++.dg/eh/simd-1.C: XFAIL on SPARC.

gcc/testsuite/g++.dg/template/error10.C

+// { dg-do compile }
+// Origin: <tilps at hotmail dot com>
+// c++/9154: poor error message for ">>" vs "> >" in template argument list
+
+
+/*
+ * Test that the error message is issued properly
+ */
+template <class T>
+class A {};
+
+A<A<int>> blah;  // { dg-error "should be `> >' within" }
+A<int>> blah2; // { dg-error "spurious `>>'" }
+
+
+/*
+ * Test that a few valid constructs containing a ">>" token in a
+ * template argument list are handled correctly.
+ */
+template <int N>
+void B(void) {}
+
+int Btest()
+{
+  B<256 >> 4>();
+}
+
+template <int N = 123>>4>
+struct C {};
+
+template <int>      struct D {};
+template <typename> struct E {};
+
+E<D< 1>>2 > > E1;
+
+const int x = 0;
+E<D< 1>>x > > E2;
+
+template <int> struct F {
+  typedef int I;
+};
+
+template <typename T = F< 1>>2 >::I>
+struct G {};
+
+/*
+ * In this special case, a valid type-id (H() is a function type) is followed
+ * by '>>', but the argument should still be parsed as an expression, which
+ * will then be rejected as non-constant expression.
+ */
+struct H
+{
+  int operator >>(int);
+};
+
+template <int V> struct L {};
+L<H() >> 5> l;  // { dg-error "" "non-constant" }
+
+
+/*
+ * This case used to not emit the nice error message because of a typo
+ *  in the code.
+ */
+template <void (*)(void)>
+struct K {};
+
+void KFunc(void);
+
+A<K<&KFunc>> k1;  // { dg-error "should be `> >' within" }
+K<&KFunc>> k2; // { dg-error "spurious `>>'" }