X-Git-Url: http://erislabs.net/gitweb/?a=blobdiff_plain;f=lib%2Fparse-datetime.y;h=4dce7fa644c6513f8f48619a852776260a0f4b70;hb=43593319b31e6b0175b8eec4433bac744959822d;hp=67669f6319ceda0c6158cb03d99bb6253801a05c;hpb=a4d796fb141dac5d85328872e2fefbd5c44870e1;p=gnulib.git

diff --git a/lib/parse-datetime.y b/lib/parse-datetime.y
index 67669f631..4dce7fa64 100644
--- a/lib/parse-datetime.y
+++ b/lib/parse-datetime.y
@@ -1,7 +1,7 @@
 %{
 /* Parse a string into an internal time stamp.
 
-   Copyright (C) 1999-2000, 2002-2012 Free Software Foundation, Inc.
+   Copyright (C) 1999-2000, 2002-2013 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
@@ -113,6 +113,11 @@ typedef long int long_time_t;
 typedef time_t long_time_t;
 #endif
 
+/* Convert a possibly-signed character to an unsigned character.  This is
+   a bit safer than casting to unsigned char, since it catches some type
+   errors that the cast doesn't.  */
+static unsigned char to_uchar (char ch) { return ch; }
+
 /* Lots of this code assumes time_t and time_t-like values fit into
    long_time_t.  */
 verify (TYPE_MINIMUM (long_time_t) <= TYPE_MINIMUM (time_t)
@@ -1171,7 +1176,8 @@ yylex (YYSTYPE *lvalp, parser_control *pc)
         }
 
       if (c != '(')
-        return *pc->input++;
+        return to_uchar (*pc->input++);
+
       count = 0;
       do
         {
@@ -1466,7 +1472,7 @@ parse_datetime (struct timespec *result, char const *p,
                           + sizeof pc.time_zone * CHAR_BIT / 3];
               if (!tz_was_altered)
                 tz0 = get_tz (tz0buf);
-              sprintf (tz1buf, "XXX%s%ld:%02d", "-" + (time_zone < 0),
+              sprintf (tz1buf, "XXX%s%ld:%02d", &"-"[time_zone < 0],
                        abs_time_zone_hour, abs_time_zone_min);
               if (setenv ("TZ", tz1buf, 1) != 0)
                 goto fail;