cpptrad.c (skip_whitespace): Pass pointer to prior char.

	* cpptrad.c (skip_whitespace): Pass pointer to prior char.
testsuite:
	* gcc.dg/cpp/trad/escaped-nl.c: New test.

From-SVN: r55135

gcc/ChangeLog

+2002-07-01  Neil Booth  <neil@daikokuya.co.uk>
+
+	* cpptrad.c (skip_whitespace): Pass pointer to prior char.
+
 2002-07-01  Kaveh R. Ghazi  <ghazi@caip.rutgers.edu>
 
 	* mips.h (FUNCTION_ARG_REGNO_P): Fix parentheses.

gcc/cpptrad.c

@@ -284,7 +284,7 @@ skip_whitespace (pfile, cur, skip_comments)
       out--;
       if (c == '\\' && is_vspace (*cur))
 	{
-	  cur = skip_escaped_newlines (pfile, cur);
+	  cur = skip_escaped_newlines (pfile, cur - 1);
 	  continue;
 	}
 

gcc/testsuite/ChangeLog

+2002-07-01  Neil Booth  <neil@daikokuya.co.uk>
+
+	* gcc.dg/cpp/trad/escaped-nl.c: New test.
+
 2002-06-30  Devang Patel  <dpatel@apple.com>
 
 	* objc.dg/fsyntax-only.m: New test.

gcc/testsuite/gcc.dg/cpp/trad/escaped-nl.c

+/* Test escaped newlines at start of macro definition are properly
+   skipped (buglet in skip_whitespace () in cpptrad.c).  */
+
+/* { dg-do preprocess } */
+
+#define NUM \
+100
+#if NUM != 100
+# error NUM not defined properly /* { dg-bogus "error" } */
+#endif