Fix array index by signed char; from martijn@

diff --git a/usr.bin/sed/compile.c b/usr.bin/sed/compile.c
index cef3fdd..f01e8f2 100644 (file)
--- a/usr.bin/sed/compile.c
+++ b/usr.bin/sed/compile.c
@@ -1,4 +1,4 @@
-/*     $OpenBSD: compile.c,v 1.46 2017/12/13 16:06:34 millert Exp $    */
+/*     $OpenBSD: compile.c,v 1.47 2017/12/13 16:07:54 millert Exp $    */
 
 /*-
  * Copyright (c) 1992 Diomidis Spinellis.
@@ -639,7 +639,6 @@ compile_tr(char *old, char **transtab)
                        else if (*old != delimiter && *old != '\\')
                                error(COMPILE, "Unexpected character after "
                                    "backslash");
-                       
                }
                if (*new == '\\') {
                        new++;
@@ -649,9 +648,9 @@ compile_tr(char *old, char **transtab)
                                error(COMPILE, "Unexpected character after "
                                    "backslash");
                }
-               if (check[*old] == 1)
+               if (check[(u_char) *old] == 1)
                        error(COMPILE, "Repeated character in source string");
-               check[*old] = 1;
+               check[(u_char) *old] = 1;
                (*transtab)[(u_char) *old++] = *new++;
        }
        if (*old != '\0' || *new != '\0')