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Explicitly check for integer overflow/underflow when parsing integers with JSON_TOKENER_STRICT.

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Eric Haszlakiewicz
2022-10-30 19:29:15 +00:00
parent c50bf9df9c
commit d6f46ae104
3 changed files with 46 additions and 0 deletions
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32
tests/test_parse.c
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@@ -438,6 +438,38 @@ struct incremental_step
{"1234", 5, 0, json_tokener_success, 0, 0},
{"1234", 5, 4, json_tokener_success, 1, 0},
/* INT64_MAX */
{"[9223372036854775807]", 22, 21, json_tokener_success, 1, 0},
/* INT64_MAX+1 => parsed as uint64 */
{"[9223372036854775808]", 22, 21, json_tokener_success, 1, 0},
/* INT64_MIN */
{"[-9223372036854775808]", 23, 22, json_tokener_success, 1, 0},
/* INT64_MIN-1 => success, but value ends up capped */
{"[-9223372036854775809]", 23, 22, json_tokener_success, 1, 0},
/* INT64_MIN-1 => failure due to underflow detected */
{"[-9223372036854775809]", 23, 21, json_tokener_error_parse_number, 1, JSON_TOKENER_STRICT},
/* UINT64_MAX */
{"[18446744073709551615]", 23, 22, json_tokener_success, 1, 0},
/* UINT64_MAX+1 => success, but value ends up capped */
{"[18446744073709551616]", 23, 22, json_tokener_success, 1, 0},
/* UINT64_MAX+1 => failure due to overflow detected */
{"[18446744073709551616]", 23, 21, json_tokener_error_parse_number, 1, JSON_TOKENER_STRICT},
/* XXX this seems like a bug, should fail with _error_parse_number instead */
{"18446744073709551616", 21, 20, json_tokener_error_parse_eof, 1, JSON_TOKENER_STRICT},
/* Exceeding integer limits as double parse OK */
{"[9223372036854775808.0]", 24, 23, json_tokener_success, 1, 0},
{"[-9223372036854775809.0]", 25, 24, json_tokener_success, 1, JSON_TOKENER_STRICT},
{"[18446744073709551615.0]", 25, 24, json_tokener_success, 1, 0},
{"[18446744073709551616.0]", 25, 24, json_tokener_success, 1, JSON_TOKENER_STRICT},
/* offset=1 because "n" is the start of "null". hmm... */
{"noodle", 7, 1, json_tokener_error_parse_null, 1, 0},
/* offset=2 because "na" is the start of "nan". hmm... */