X-Git-Url: https://git.exim.org/exim.git/blobdiff_plain/246976987ab3541336450030876b8650e786c581..10cc8a1e4c3077eefcb37878990753d1d49cf363:/src/src/expand.c

diff --git a/src/src/expand.c b/src/src/expand.c
index 64a3a86e6..7a3252eaa 100644
--- a/src/src/expand.c
+++ b/src/src/expand.c
@@ -6189,8 +6189,13 @@ while (*s != 0)
 	      }
 	    if((c & 0xe0) == 0xc0)		/* 2-byte sequence */
 	      {
-	      bytes_left = 1;
-	      codepoint = c & 0x1f;
+	      if(c == 0xc0 || c == 0xc1)	/* 0xc0 and 0xc1 are illegal */
+		complete = -1;
+	      else
+		{
+		  bytes_left = 1;
+		  codepoint = c & 0x1f;
+		}
 	      }
 	    else if((c & 0xf0) == 0xe0)		/* 3-byte sequence */
 	      {