From 2a96042a8da60b625cc9dbbdab3b03cd7586e34f Mon Sep 17 00:00:00 2001 From: Markus Armbruster Date: Fri, 31 Aug 2018 09:58:36 +0200 Subject: json: Fix lexer for lookahead character beyond '\x7F' The lexer fails to end a valid token when the lookahead character is beyond '\x7F'. For instance, input true\xC2\xA2 produces the tokens JSON_ERROR true\xC2 JSON_ERROR \xA2 This should be JSON_KEYWORD true JSON_ERROR \xC2 JSON_ERROR \xA2 instead. The culprit is #define TERMINAL(state) [0 ... 0x7F] = (state) It leaves [0x80..0xFF] zero, i.e. IN_ERROR. Has always been broken. Fix it to initialize the complete array. Signed-off-by: Markus Armbruster Reviewed-by: Eric Blake Message-Id: <20180831075841.13363-2-armbru@redhat.com> --- qobject/json-lexer.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'qobject') diff --git a/qobject/json-lexer.c b/qobject/json-lexer.c index e1745a3..4867839 100644 --- a/qobject/json-lexer.c +++ b/qobject/json-lexer.c @@ -123,7 +123,7 @@ enum json_lexer_state { QEMU_BUILD_BUG_ON((int)JSON_MIN <= (int)IN_START_INTERP); QEMU_BUILD_BUG_ON(IN_START_INTERP != IN_START + 1); -#define TERMINAL(state) [0 ... 0x7F] = (state) +#define TERMINAL(state) [0 ... 0xFF] = (state) /* Return whether TERMINAL is a terminal state and the transition to it from OLD_STATE required lookahead. This happens whenever the table -- cgit v1.1