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Support for few more internal functions evaluation

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This commit is contained in:
Dmitry Stogov 2017-07-05 16:14:38 +03:00
parent 74a29468ef
commit 680046086c
1 changed files with 53 additions and 0 deletions
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53
ext/opcache/Optimizer/sccp.c
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@ -531,6 +531,59 @@ static inline int ct_eval_func_call(
}
ZVAL_STR(result, str);
return SUCCESS;
} else {
uint32_t i;
zend_execute_data *execute_data;
zend_function *func;
int overflow;
if ((zend_string_equals_literal(name, "array_keys")
|| zend_string_equals_literal(name, "array_values"))
&& num_args == 1
&& Z_TYPE_P(args[0]) == IS_ARRAY) {
/* pass */
} else if (zend_string_equals_literal(name, "str_repeat")
&& num_args == 2
&& Z_TYPE_P(args[0]) == IS_STRING
&& Z_TYPE_P(args[1]) == IS_LONG
&& zend_safe_address(Z_STRLEN_P(args[0]), Z_LVAL_P(args[1]), 0, &overflow) < 64 * 1024 * 1024
&& !overflow) {
/* pass */
} else if ((zend_string_equals_literal(name, "array_merge")
|| zend_string_equals_literal(name, "array_replace")
|| zend_string_equals_literal(name, "array_merge_recursive")
|| zend_string_equals_literal(name, "array_merge_recursive"))
&& num_args > 0) {
for (i = 0; i < num_args; i++) {
if (Z_TYPE_P(args[i]) != IS_ARRAY) {
return FAILURE;
}
}
} else {
#if 0
fprintf(stderr, "constant ICALL to %s()\n", ZSTR_VAL(name));
#endif
return FAILURE;
}
func = zend_hash_find_ptr(CG(function_table), name);
if (!func || func->type != ZEND_INTERNAL_FUNCTION) {
return FAILURE;
}
execute_data = safe_emalloc(num_args, sizeof(zval), ZEND_CALL_FRAME_SLOT * sizeof(zval));
memset(execute_data, 0, sizeof(zend_execute_data));
EX(func) = func;
EX_NUM_ARGS() = num_args;
for (i = 0; i < num_args; i++) {
ZVAL_COPY(EX_VAR_NUM(i), args[i]);
}
func->internal_function.handler(execute_data, result);
for (i = 0; i < num_args; i++) {
zval_ptr_dtor_nogc(EX_VAR_NUM(i));
}
efree(execute_data);
return SUCCESS;
}
return FAILURE;
}