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Avoid accessing array out of range (#115)

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ben 2021-07-09 20:21:31 +08:00 committed by GitHub
parent 00b843a3c7
commit 4fdec18c61
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GPG Key ID: 4AEE18F83AFDEB23
1 changed files with 28 additions and 16 deletions
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44
deps/oblib/src/lib/number/ob_number_v2.cpp vendored
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@ -656,26 +656,38 @@ int ObNumber::find_point_range_(const char* str, const int64_t length, int64_t&
for (; str_ptr != str_end && *str_ptr == '0'; ++str_ptr)
; /* ignore leading zero */
start_idx = str_ptr - str;
tmp_start_idx = ((*str_ptr == '.') ? (start_idx - 1) : start_idx);
if (str_ptr == str_end) {
// all zero cases:
// start_idx should points to the last '0'.
// start_idx and end_idx point to the same position,
// so that the 'construct_digits_()' would generate
// number '0' in the end
start_idx = str_ptr - 1 - str;
tmp_start_idx = start_idx;
floating_point = start_idx;
end_idx = start_idx;
} else {
start_idx = str_ptr - str;
tmp_start_idx = ((*str_ptr == '.') ? (start_idx - 1) : start_idx);
for (; str_ptr != str_end && ('0' <= *str_ptr && *str_ptr <= '9'); ++str_ptr)
;
if (str_ptr != str_end && *str_ptr == '.') { /* find floating point */
int64_t non_zero_end = 0;
floating_point = str_ptr - str;
++str_ptr;
for (; str_ptr != str_end && ('0' <= *str_ptr && *str_ptr <= '9'); ++str_ptr)
;
end_idx = str_ptr - str;
} else {
floating_point = str_ptr - str;
end_idx = floating_point;
}
if (str_ptr != str_end) {
warning = OB_INVALID_NUMERIC;
if (str_ptr != str_end && *str_ptr == '.') { /* find floating point */
int64_t non_zero_end = 0;
floating_point = str_ptr - str;
++str_ptr;
for (; str_ptr != str_end && ('0' <= *str_ptr && *str_ptr <= '9'); ++str_ptr)
;
end_idx = str_ptr - str;
} else {
floating_point = str_ptr - str;
end_idx = floating_point;
}
if (str_ptr != str_end) {
warning = OB_INVALID_NUMERIC;
}
}
}
if (NULL != precision && NULL != scale) {