* g++.dg/expr/unary1.C, g++.dg/expr/unary2.C: New tests.

From-SVN: r90616

gcc/testsuite/ChangeLog

+2004-11-14  Giovanni Bajo  <giovannibajo@gcc.gnu.org>
+
+	* g++.dg/expr/unary1.C, g++.dg/expr/unary2.C: New tests.
+
 2004-11-14  Kriang Lerdsuwanakij  <lerdsuwa@users.sourceforge.net>
 
 	PR c++/17344

gcc/testsuite/g++.dg/expr/unary1.C

+// { dg-do compile }
+// Unary plus (but not unary minus) can be applied to pointer types
+
+void *p;
+
+void f(void)
+{
+  -p;        // { dg-error "wrong type argument" }
+  +p;
+}
+
+template <int>
+void g(void)
+{
+  -p;        // { dg-error "wrong type argument" }
+  +p;
+}

gcc/testsuite/g++.dg/expr/unary2.C

+// { dg-do compile }
+// Unary plus/minus are not lvalues.
+
+// In templates we require an instantiation to emit the diagnostic. This
+//  is wrong and it is PR 18474.
+
+int n;
+
+void f(void)
+{
+  -n = 0;        // { dg-error "non-lvalue" }
+  +n = 0;        // { dg-error "non-lvalue" }
+}
+
+template <int>
+void g(void)
+{
+  -n = 0;        // { dg-error "non-lvalue" "" { xfail *-*-* } }
+  +n = 0;        // { dg-error "non-lvalue" "" { xfail *-*-* } }
+}