--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/gcc/testsuite/gcc.dg/cpp/trad/assembler.S	Fri Oct 27 22:46:09 2017 +0900
@@ -0,0 +1,29 @@
+/* Regression test - in assembly language, # may have some significance
+   other than 'stringize macro argument' and therefore must be preserved
+   in the output, and should not be warned about.  */
+
+/* { dg-do preprocess } */
+
+#ifndef FOO
+#1			/* Once caused a bogus unterminated #ifndef.  */
+#endif
+		
+#define foo() mov r0, #5  /* { dg-bogus "not followed" "spurious warning" } */
+
+entry:
+	foo()
+
+/* Check we don't EOF on an unknown directive.  */
+#unknown directive
+#error a later diagnostic	/* { dg-error "diagnostic" } */
+		
+/*
+   { dg-final { if ![file exists 20000510-1.i] { return }	} }
+   { dg-final { set tmp [grep 20000510-1.i # line]		} }
+   { dg-final { if {[string length $tmp] > 0} \{		} }
+   { dg-final {     pass "20000510-1.S: # preservation"		} }
+   { dg-final { \} else \{					} }
+   { dg-final {     fail "20000510-1.S: # preservation"		} }
+   { dg-final { \}						} }
+*/
+