New test cases

From-SVN: r32785

gcc/testsuite/gcc.dg/cpp-hash1.c

+/* Test for proper handling of # in object-like macros.
+   From Linux kernel.  */
+/* { dg-do preprocess } */
+
+#define FIXUP	.section ".fixup",#alloc,#execinstr
+
+FIXUP
+
+/* { dg-bogus "not followed by" "object-like #" { target *-*-* } 3 } */

gcc/testsuite/gcc.dg/cpp-hash2.c

+/* Test for erroneously thinking comments are token-pastes.
+   From XFree86 4.0.  */
+/* { dg-do preprocess } */
+/* { dg-options "-traditional" } */
+
+#ifndef foo
+#define foo	/**/
+#endif
+
+#ifndef foo
+#define foo	/* as nothing */
+#endif
+
+/* { dg-bogus "(start|end) of macro" "/**/ at end" { target *-*-* } 7 } */
+/* { dg-bogus "(start|end) of macro" "comment at end" { target *-*-* } 11 } */

gcc/testsuite/gcc.dg/cpp-ifparen.c

+#if 2048 < (16 * (40) + 192)
+#error			/* { dg-bogus "error" "with paren" } */
+#endif
+
+#if 2048 < (16 * 40 + 192)
+#error			/* { dg-bogus "error" "without paren" } */
+#endif