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return if the length of the decimal string is greater than maxDecimalStrLen

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v-kaywon 2017-11-17 13:27:45 -08:00
parent bb1e1c0168
commit fc7c4fb89b
1 changed files with 5 additions and 2 deletions
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7
source/shared/core_stmt.cpp
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@ -2666,8 +2666,11 @@ void adjustInputPrecision( _Inout_ zval* param_z, _In_ SQLSMALLINT decimal_digit
// maxDecimalStrLen is the maximum length of a stringified decimal number
// 6 is derived from: 1 for '.'; 1 for sign of the number; 1 for 'e' or 'E' (scientific notation);
// 1 for sign of scientific exponent; 2 for length of scientific exponent
// if the length is greater than maxDecimalStrLen, do not change the string
size_t maxDecimalStrLen = maxDecimalPrecision + 6;
SQLSRV_ASSERT( Z_STRLEN_P( param_z ) < maxDecimalStrLen, "Input decimal overflow: sql decimal type only supports up to a precision of 38." );
if (Z_STRLEN_P(param_z) > maxDecimalStrLen) {
return;
}
std::vector<size_t> digits;
char* ptr = ZSTR_VAL( Z_STR_P( param_z ));
bool isNeg = false;
@ -2717,7 +2720,7 @@ void adjustInputPrecision( _Inout_ zval* param_z, _In_ SQLSMALLINT decimal_digit
}
}
// if ptr is not pointing to a null terminator at this point, that means the decimal string input is invalid
// no to change to string and let SQL Server handle the invalid decimal string
// do not change the string and let SQL Server handle the invalid decimal string
// if number of decimal is less than the exponent, that means the number is a whole number, so no need to adjust the precision
if(*ptr == '\0' && ( int )numDec > scientificExp ){
int decToRemove = numDec - scientificExp - decimal_digits;