From be63d912063987c1f714c37b7dfd76ff06133960 Mon Sep 17 00:00:00 2001
From: Richard Stallman <rms@gnu.org>
Date: Sun, 4 Oct 1992 04:58:30 +0000
Subject: [PATCH] (readescape): No warning if digits in \x are all 0's.

From-SVN: r2318
---
 gcc/c-lex.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/gcc/c-lex.c b/gcc/c-lex.c
index 0e07781b4bb..bfbc92027f4 100644
--- a/gcc/c-lex.c
+++ b/gcc/c-lex.c
@@ -845,6 +845,9 @@ readescape (ignore_ptr)
 	}
       if (! nonnull)
 	error ("\\x used with no following hex digits");
+      else if (count == 0)
+	/* Digits are all 0's.  Ok.  */
+	;
       else if ((count - 1) * 4 >= TYPE_PRECISION (integer_type_node)
 	       || (count > 1
 		   && ((1 << (TYPE_PRECISION (integer_type_node) - (count - 1) * 4))
-- 
2.30.2