pr33572.C (main): Allow argc to be zero.

gcc/testsuite/
	* g++.dg/torture/pr33572.C (main): Allow argc to be zero.

From-SVN: r129272

gcc/testsuite/ChangeLog

+2007-10-12  Richard Sandiford  <rsandifo@nildram.co.uk>
+
+	* g++.dg/torture/pr33572.C (main): Allow argc to be zero.
+
 2007-10-12  Paul Thomas  <pault@gcc.gnu.org>
 
 	PR fortran/33542

gcc/testsuite/g++.dg/torture/pr33572.C

@@ -7,7 +7,7 @@ struct Foo { virtual void f() {} };
 int main(int argc, char**)
 {
 	std::auto_ptr<Foo> foo;
-	if (argc) {
+	if (argc >= 0) {
 		foo.reset(new Foo());
 	} else {
 		std::vector<int> v;