diff --git a/7.1.174 b/7.1.174
new file mode 100644
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--- /dev/null
+++ b/7.1.174
@@ -0,0 +1,71 @@
+To: vim-dev@vim.org
+Subject: Patch 7.1.174
+Fcc: outbox
+From: Bram Moolenaar <Bram@moolenaar.net>
+Mime-Version: 1.0
+Content-Type: text/plain; charset=ISO-8859-1
+Content-Transfer-Encoding: 8bit
+------------
+
+Patch 7.1.174
+Problem:    Writing NUL past end of a buffer.
+Solution:   Copy one byte less when using strncat(). (Dominuque Pelle)
+Files:	    src/ex_cmds.c, src/ex_docmd.c
+
+
+*** ../vim-7.1.173/src/ex_cmds.c	Sat Dec  8 22:20:24 2007
+--- src/ex_cmds.c	Fri Dec  7 22:13:32 2007
+***************
+*** 1650,1656 ****
+  {
+      vim_snprintf((char *)IObuff, IOSIZE, _("%sviminfo: %s in line: "),
+  							     errnum, message);
+!     STRNCAT(IObuff, line, IOSIZE - STRLEN(IObuff));
+      if (IObuff[STRLEN(IObuff) - 1] == '\n')
+  	IObuff[STRLEN(IObuff) - 1] = NUL;
+      emsg(IObuff);
+--- 1650,1656 ----
+  {
+      vim_snprintf((char *)IObuff, IOSIZE, _("%sviminfo: %s in line: "),
+  							     errnum, message);
+!     STRNCAT(IObuff, line, IOSIZE - STRLEN(IObuff) - 1);
+      if (IObuff[STRLEN(IObuff) - 1] == '\n')
+  	IObuff[STRLEN(IObuff) - 1] = NUL;
+      emsg(IObuff);
+*** ../vim-7.1.173/src/ex_docmd.c	Sat Nov 24 21:49:19 2007
+--- src/ex_docmd.c	Fri Dec  7 21:01:03 2007
+***************
+*** 2660,2666 ****
+  		errormsg = IObuff;
+  	    }
+  	    STRCAT(errormsg, ": ");
+! 	    STRNCAT(errormsg, *cmdlinep, IOSIZE - STRLEN(IObuff));
+  	}
+  	emsg(errormsg);
+      }
+--- 2660,2666 ----
+  		errormsg = IObuff;
+  	    }
+  	    STRCAT(errormsg, ": ");
+! 	    STRNCAT(errormsg, *cmdlinep, IOSIZE - STRLEN(IObuff) - 1);
+  	}
+  	emsg(errormsg);
+      }
+*** ../vim-7.1.173/src/version.c	Sun Dec  9 19:25:35 2007
+--- src/version.c	Sun Dec  9 19:36:50 2007
+***************
+*** 668,669 ****
+--- 668,671 ----
+  {   /* Add new patch number below this line */
++ /**/
++     174,
+  /**/
+
+-- 
+hundred-and-one symptoms of being an internet addict:
+214. Your MCI "Circle of Friends" are all Hayes-compatible.
+
+ /// Bram Moolenaar -- Bram@Moolenaar.net -- http://www.Moolenaar.net   \\\
+///        sponsor Vim, vote for features -- http://www.Vim.org/sponsor/ \\\
+\\\        download, build and distribute -- http://www.A-A-P.org        ///
+ \\\            help me help AIDS victims -- http://ICCF-Holland.org    ///