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Issue #173: since some sscanf implementations return 0 for non-zero inputs, directly check for "0" in the input.

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Eric Haszlakiewicz
2017-09-05 01:53:13 -04:00
parent 2d1da5ab13
commit b2afca4560
1 changed files with 3 additions and 1 deletions
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4
json_util.c
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@@ -265,7 +265,9 @@ int json_parse_int64(const char *buf, int64_t *retval)
// Skip leading zeros, but keep at least one digit
while (buf_sig_digits[0] == '0' && buf_sig_digits[1] != '\0')
buf_sig_digits++;
if (num64 == 0) // assume all sscanf impl's will parse -0 to 0
// Can't check num64==0 because some sscanf impl's parse
// non-zero values to 0. (e.g. Illumos with UINT64_MAX)
if (buf_sig_digits[0] == '0' && buf_sig_digits[1] == '\0')
orig_has_neg = 0; // "-0" is the same as just plain "0"
snprintf(buf_cmp_start, sizeof(buf_cmp), "%" PRId64, num64);