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Avoid unnecessary number initializations in BCMath #14104

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May 1, 2024
Merged

Avoid unnecessary number initializations in BCMath #14104

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44 changes: 11 additions & 33 deletions ext/bcmath/bcmath.c
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Original file line number Diff line number Diff line change
Expand Up @@ -148,7 +148,7 @@ PHP_FUNCTION(bcadd)
zend_string *left, *right;
zend_long scale_param;
bool scale_param_is_null = 1;
bc_num first, second, result;
bc_num first = NULL, second = NULL, result;
int scale;

ZEND_PARSE_PARAMETERS_START(2, 3)
Expand All @@ -167,8 +167,6 @@ PHP_FUNCTION(bcadd)
scale = (int) scale_param;
}

bc_init_num(&first);
bc_init_num(&second);
bc_init_num(&result);

if (php_str2num(&first, ZSTR_VAL(left)) == FAILURE) {
Expand Down Expand Up @@ -199,7 +197,7 @@ PHP_FUNCTION(bcsub)
zend_string *left, *right;
zend_long scale_param;
bool scale_param_is_null = 1;
bc_num first, second, result;
bc_num first = NULL, second = NULL, result;
int scale;

ZEND_PARSE_PARAMETERS_START(2, 3)
Expand All @@ -218,8 +216,6 @@ PHP_FUNCTION(bcsub)
scale = (int) scale_param;
}

bc_init_num(&first);
bc_init_num(&second);
bc_init_num(&result);

if (php_str2num(&first, ZSTR_VAL(left)) == FAILURE) {
Expand Down Expand Up @@ -250,7 +246,7 @@ PHP_FUNCTION(bcmul)
zend_string *left, *right;
zend_long scale_param;
bool scale_param_is_null = 1;
bc_num first, second, result;
bc_num first = NULL, second = NULL, result;
int scale;

ZEND_PARSE_PARAMETERS_START(2, 3)
Expand All @@ -269,8 +265,6 @@ PHP_FUNCTION(bcmul)
scale = (int) scale_param;
}

bc_init_num(&first);
bc_init_num(&second);
bc_init_num(&result);

if (php_str2num(&first, ZSTR_VAL(left)) == FAILURE) {
Expand Down Expand Up @@ -301,7 +295,7 @@ PHP_FUNCTION(bcdiv)
zend_string *left, *right;
zend_long scale_param;
bool scale_param_is_null = 1;
bc_num first, second, result;
bc_num first = NULL, second = NULL, result;
int scale = BCG(bc_precision);

ZEND_PARSE_PARAMETERS_START(2, 3)
Expand All @@ -320,8 +314,6 @@ PHP_FUNCTION(bcdiv)
scale = (int) scale_param;
}

bc_init_num(&first);
bc_init_num(&second);
bc_init_num(&result);

if (php_str2num(&first, ZSTR_VAL(left)) == FAILURE) {
Expand Down Expand Up @@ -355,7 +347,7 @@ PHP_FUNCTION(bcmod)
zend_string *left, *right;
zend_long scale_param;
bool scale_param_is_null = 1;
bc_num first, second, result;
bc_num first = NULL, second = NULL, result;
int scale = BCG(bc_precision);

ZEND_PARSE_PARAMETERS_START(2, 3)
Expand All @@ -374,8 +366,6 @@ PHP_FUNCTION(bcmod)
scale = (int) scale_param;
}

bc_init_num(&first);
bc_init_num(&second);
bc_init_num(&result);

if (php_str2num(&first, ZSTR_VAL(left)) == FAILURE) {
Expand Down Expand Up @@ -409,7 +399,7 @@ PHP_FUNCTION(bcpowmod)
zend_string *base_str, *exponent_str, *modulus_str;
zend_long scale_param;
bool scale_param_is_null = 1;
bc_num bc_base, bc_expo, bc_modulus, result;
bc_num bc_base = NULL, bc_expo = NULL, bc_modulus = NULL, result;
int scale = BCG(bc_precision);

ZEND_PARSE_PARAMETERS_START(3, 4)
Expand All @@ -429,9 +419,6 @@ PHP_FUNCTION(bcpowmod)
scale = (int) scale_param;
}

bc_init_num(&bc_base);
bc_init_num(&bc_expo);
bc_init_num(&bc_modulus);
bc_init_num(&result);

if (php_str2num(&bc_base, ZSTR_VAL(base_str)) == FAILURE) {
Expand Down Expand Up @@ -487,7 +474,7 @@ PHP_FUNCTION(bcpow)
zend_string *base_str, *exponent_str;
zend_long scale_param;
bool scale_param_is_null = 1;
bc_num first, bc_exponent, result;
bc_num first = NULL, bc_exponent = NULL, result;
int scale = BCG(bc_precision);

ZEND_PARSE_PARAMETERS_START(2, 3)
Expand All @@ -506,8 +493,6 @@ PHP_FUNCTION(bcpow)
scale = (int) scale_param;
}

bc_init_num(&first);
bc_init_num(&bc_exponent);
bc_init_num(&result);

if (php_str2num(&first, ZSTR_VAL(base_str)) == FAILURE) {
Expand Down Expand Up @@ -549,7 +534,7 @@ PHP_FUNCTION(bcsqrt)
zend_string *left;
zend_long scale_param;
bool scale_param_is_null = 1;
bc_num result;
bc_num result = NULL;
int scale = BCG(bc_precision);

ZEND_PARSE_PARAMETERS_START(1, 2)
Expand All @@ -567,8 +552,6 @@ PHP_FUNCTION(bcsqrt)
scale = (int) scale_param;
}

bc_init_num(&result);

if (php_str2num(&result, ZSTR_VAL(left)) == FAILURE) {
zend_argument_value_error(1, "is not well-formed");
goto cleanup;
Expand All @@ -592,7 +575,7 @@ PHP_FUNCTION(bccomp)
zend_string *left, *right;
zend_long scale_param;
bool scale_param_is_null = 1;
bc_num first, second;
bc_num first = NULL, second = NULL;
int scale = BCG(bc_precision);

ZEND_PARSE_PARAMETERS_START(2, 3)
Expand All @@ -611,9 +594,6 @@ PHP_FUNCTION(bccomp)
scale = (int) scale_param;
}

bc_init_num(&first);
bc_init_num(&second);

if (!bc_str2num(&first, ZSTR_VAL(left), scale, false)) {
zend_argument_value_error(1, "is not well-formed");
goto cleanup;
Expand All @@ -637,13 +617,12 @@ PHP_FUNCTION(bccomp)
static void bcfloor_or_bcceil(INTERNAL_FUNCTION_PARAMETERS, bool is_floor)
{
zend_string *numstr;
bc_num num, result;
bc_num num = NULL, result;

ZEND_PARSE_PARAMETERS_START(1, 1)
Z_PARAM_STR(numstr)
ZEND_PARSE_PARAMETERS_END();

bc_init_num(&num);
bc_init_num(&result);

if (php_str2num(&num, ZSTR_VAL(numstr)) == FAILURE) {
Expand Down Expand Up @@ -681,7 +660,7 @@ PHP_FUNCTION(bcround)
zend_string *numstr;
zend_long precision = 0;
zend_long mode = PHP_ROUND_HALF_UP;
bc_num num, result;
bc_num num = NULL, result;

ZEND_PARSE_PARAMETERS_START(1, 3)
Z_PARAM_STR(numstr)
Expand All @@ -705,7 +684,6 @@ PHP_FUNCTION(bcround)
return;
}

bc_init_num(&num);
bc_init_num(&result);

if (php_str2num(&num, ZSTR_VAL(numstr)) == FAILURE) {
Expand Down
4 changes: 2 additions & 2 deletions ext/bcmath/libbcmath/src/str2num.c
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Original file line number Diff line number Diff line change
Expand Up @@ -36,6 +36,7 @@

/* Convert strings to bc numbers. Base 10 only.*/

/* Assumes `num` points to NULL, i.e. does yet not hold a number. */
bool bc_str2num(bc_num *num, char *str, size_t scale, bool auto_scale)
{
size_t digits = 0;
Expand All @@ -45,8 +46,7 @@ bool bc_str2num(bc_num *num, char *str, size_t scale, bool auto_scale)
char *fractional_end = NULL;
bool zero_int = false;

/* Prepare num. */
bc_free_num (num);
ZEND_ASSERT(*num == NULL);

/* Check for valid number and count digits. */
if ((*ptr == '+') || (*ptr == '-')) {
Expand Down
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