From: Paul Smith <psmith@gnu.org>
Date: Sun, 12 Jul 2015 16:35:42 +0000 (-0400)
Subject: * read.c (unescape_char): [SV 45050] Handle final backslashes.
X-Git-Tag: 4.1.90~49
X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=9ef06be018627773e6dcea2a37f0e03fea575741;p=thirdparty%2Fmake.git

* read.c (unescape_char): [SV 45050] Handle final backslashes.

If the last thing in the string to be unescaped is a backslash,
stop without reading beyond the end of the string.
---

diff --git a/read.c b/read.c
index e67d386e..2b5f08d1 100644
--- a/read.c
+++ b/read.c
@@ -2343,6 +2343,10 @@ unescape_char (char *string, int c)
               /* It's not; just take it all without unescaping.  */
               memmove (p, s, l);
               p += l;
+
+              // If we hit the end of the string, we're done
+              if (*e == '\0')
+                break;
             }
           else if (l > 1)
             {
@@ -2351,6 +2355,7 @@ unescape_char (char *string, int c)
               memmove (p, s, l);
               p += l;
             }
+
           s = e;
         }