diff options
| author | Markus Armbruster <armbru@redhat.com> | 2015-11-25 22:23:25 +0100 |
|---|---|---|
| committer | Markus Armbruster <armbru@redhat.com> | 2015-11-26 09:18:45 +0100 |
| commit | b8d3b1da3cdbb02e180618d6be346c564723015d (patch) | |
| tree | 1945215744ecfa7878ee52ac1b80b3ca971ce5f6 /qobject/json-lexer.c | |
| parent | f0ae0304c7a41a42b7d4a6cde450da938d3c2cc7 (diff) | |
qjson: Spell out some silent assumptions
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Message-Id: <1448486613-17634-5-git-send-email-armbru@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Diffstat (limited to 'qobject/json-lexer.c')
| -rw-r--r-- | qobject/json-lexer.c | 7 |
1 files changed, 6 insertions, 1 deletions
diff --git a/qobject/json-lexer.c b/qobject/json-lexer.c index b19623e229..5735c1ea87 100644 --- a/qobject/json-lexer.c +++ b/qobject/json-lexer.c @@ -30,7 +30,7 @@ */ enum json_lexer_state { - IN_ERROR = 0, + IN_ERROR = 0, /* must really be 0, see json_lexer[] */ IN_DQ_UCODE3, IN_DQ_UCODE2, IN_DQ_UCODE1, @@ -62,6 +62,8 @@ enum json_lexer_state { IN_START, }; +QEMU_BUILD_BUG_ON((int)JSON_MIN <= (int)IN_START); + #define TERMINAL(state) [0 ... 0x7F] = (state) /* Return whether TERMINAL is a terminal state and the transition to it @@ -71,6 +73,8 @@ enum json_lexer_state { (json_lexer[(old_state)][0] == (terminal)) static const uint8_t json_lexer[][256] = { + /* Relies on default initialization to IN_ERROR! */ + /* double quote string */ [IN_DQ_UCODE3] = { ['0' ... '9'] = IN_DQ_STRING, @@ -287,6 +291,7 @@ static int json_lexer_feed_char(JSONLexer *lexer, char ch, bool flush) } do { + assert(lexer->state <= ARRAY_SIZE(json_lexer)); new_state = json_lexer[lexer->state][(uint8_t)ch]; char_consumed = !TERMINAL_NEEDED_LOOKAHEAD(lexer->state, new_state); if (char_consumed) { |