the proposed patch (backport from php6) is attached.
I think this feature is completely useless and it was agreed to remove it
about 5 years ago.
Derick, can I commit the patch today?
Thanks. Dmitry.
Dmitry Stogov wrote:
Hi,
Previously we decided to remove "break/continue $var" syntax.
I even implemented it in PHP6 brunch, however it wasn't backported into
trunk. Could I do it?
Thanks. Dmitry.
Index: Zend/zend_execute.c
===================================================================
--- Zend/zend_execute.c (revision 305710)
+++ Zend/zend_execute.c (working copy)
@@ -1362,21 +1362,12 @@
}
}
-static inline zend_brk_cont_element* zend_brk_cont(zval *nest_levels_zval,
int array_offset, const zend_op_array *op_array, const temp_variable *Ts
TSRMLS_DC)
+static inline zend_brk_cont_element* zend_brk_cont(int nest_levels, int
array_offset, const zend_op_array *op_array, const temp_variable *Ts
TSRMLS_DC)
{
zval tmp;
- int nest_levels, original_nest_levels;
+ int original_nest_levels = nest_levels;
zend_brk_cont_element *jmp_to;
- if (nest_levels_zval->type != IS_LONG) {
- tmp = *nest_levels_zval;
- zval_copy_ctor(&tmp);
- convert_to_long(&tmp);
- nest_levels = tmp.value.lval;
- } else {
- nest_levels = nest_levels_zval->value.lval;
- }
- original_nest_levels = nest_levels;
do {
if (array_offset==-1) {
zend_error_noreturn(E_ERROR, "Cannot break/continue
%d level%s", original_nest_levels, (original_nest_levels == 1) ? "" : "s");
Index: Zend/zend_vm_execute.h
===================================================================
--- Zend/zend_vm_execute.h (revision 305710)
+++ Zend/zend_vm_execute.h (working copy)
@@ -1304,11 +1304,10 @@
static int ZEND_FASTCALL
ZEND_BRK_SPEC_CONST_HANDLER(ZEND_OPCODE_HANDLER_ARGS)
{
USE_OPLINE
-
zend_brk_cont_element *el;
SAVE_OPLINE();
- el = zend_brk_cont(opline->op2.zv, opline->op1.opline_num,
+ el = zend_brk_cont(Z_LVAL_P(opline->op2.zv), opline->op1.opline_num,
EX(op_array), EX_Ts() TSRMLS_CC);
ZEND_VM_JMP(EX(op_array)->opcodes + el->brk);
@@ -1317,11 +1316,10 @@
static int ZEND_FASTCALL
ZEND_CONT_SPEC_CONST_HANDLER(ZEND_OPCODE_HANDLER_ARGS)
{
USE_OPLINE
-
zend_brk_cont_element *el;
SAVE_OPLINE();
- el = zend_brk_cont(opline->op2.zv, opline->op1.opline_num,
+ el = zend_brk_cont(Z_LVAL_P(opline->op2.zv), opline->op1.opline_num,
EX(op_array), EX_Ts() TSRMLS_CC);
ZEND_VM_JMP(EX(op_array)->opcodes + el->cont);
@@ -1334,7 +1332,7 @@
zend_brk_cont_element *el;
SAVE_OPLINE();
- el = zend_brk_cont(opline->op2.zv, opline->extended_value,
+ el = zend_brk_cont(Z_LVAL_P(opline->op2.zv), opline->extended_value,
EX(op_array), EX_Ts() TSRMLS_CC);
brk_opline = EX(op_array)->opcodes + el->brk;
@@ -1477,32 +1475,6 @@
}
-static int ZEND_FASTCALL
ZEND_BRK_SPEC_TMP_HANDLER(ZEND_OPCODE_HANDLER_ARGS)
-{
- USE_OPLINE
- zend_free_op free_op2;
- zend_brk_cont_element *el;
-
- SAVE_OPLINE();
- el = zend_brk_cont(_get_zval_ptr_tmp(opline->op2.var, EX_Ts(),
&free_op2 TSRMLS_CC), opline->op1.opline_num,
- EX(op_array), EX_Ts() TSRMLS_CC);
- zval_dtor(free_op2.var);
- ZEND_VM_JMP(EX(op_array)->opcodes + el->brk);
-}
-
-static int ZEND_FASTCALL
ZEND_CONT_SPEC_TMP_HANDLER(ZEND_OPCODE_HANDLER_ARGS)
-{
- USE_OPLINE
- zend_free_op free_op2;
- zend_brk_cont_element *el;
-
- SAVE_OPLINE();
- el = zend_brk_cont(_get_zval_ptr_tmp(opline->op2.var, EX_Ts(),
&free_op2 TSRMLS_CC), opline->op1.opline_num,
- EX(op_array), EX_Ts() TSRMLS_CC);
- zval_dtor(free_op2.var);
- ZEND_VM_JMP(EX(op_array)->opcodes + el->cont);
-}
-
static int ZEND_FASTCALL
ZEND_FETCH_CLASS_SPEC_VAR_HANDLER(ZEND_OPCODE_HANDLER_ARGS)
{
USE_OPLINE
@@ -1599,32 +1571,6 @@
}
-static int ZEND_FASTCALL
ZEND_BRK_SPEC_VAR_HANDLER(ZEND_OPCODE_HANDLER_ARGS)
-{
- USE_OPLINE
- zend_free_op free_op2;
- zend_brk_cont_element *el;
-
- SAVE_OPLINE();
- el = zend_brk_cont(_get_zval_ptr_var(opline->op2.var, EX_Ts(),
&free_op2 TSRMLS_CC), opline->op1.opline_num,
- EX(op_array), EX_Ts() TSRMLS_CC);
- if (free_op2.var) {zval_ptr_dtor(&free_op2.var);};
- ZEND_VM_JMP(EX(op_array)->opcodes + el->brk);
-}
-
-static int ZEND_FASTCALL
ZEND_CONT_SPEC_VAR_HANDLER(ZEND_OPCODE_HANDLER_ARGS)
-{
- USE_OPLINE
- zend_free_op free_op2;
- zend_brk_cont_element *el;
-
- SAVE_OPLINE();
- el = zend_brk_cont(_get_zval_ptr_var(opline->op2.var, EX_Ts(),
&free_op2 TSRMLS_CC), opline->op1.opline_num,
- EX(op_array), EX_Ts() TSRMLS_CC);
- if (free_op2.var) {zval_ptr_dtor(&free_op2.var);};
- ZEND_VM_JMP(EX(op_array)->opcodes + el->cont);
-}
-
static int ZEND_FASTCALL
ZEND_FETCH_CLASS_SPEC_UNUSED_HANDLER(ZEND_OPCODE_HANDLER_ARGS)
{
USE_OPLINE
@@ -1754,32 +1700,6 @@
}
-static int ZEND_FASTCALL
ZEND_BRK_SPEC_CV_HANDLER(ZEND_OPCODE_HANDLER_ARGS)
-{
- USE_OPLINE
-
- zend_brk_cont_element *el;
-
- SAVE_OPLINE();
- el = zend_brk_cont(_get_zval_ptr_cv_BP_VAR_R(EX_CVs(),
opline->op2.var TSRMLS_CC), opline->op1.opline_num,
- EX(op_array), EX_Ts() TSRMLS_CC);
-
- ZEND_VM_JMP(EX(op_array)->opcodes + el->brk);
-}
-
-static int ZEND_FASTCALL
ZEND_CONT_SPEC_CV_HANDLER(ZEND_OPCODE_HANDLER_ARGS)
-{
- USE_OPLINE
-
- zend_brk_cont_element *el;
-
- SAVE_OPLINE();
- el = zend_brk_cont(_get_zval_ptr_cv_BP_VAR_R(EX_CVs(),
opline->op2.var TSRMLS_CC), opline->op1.opline_num,
- EX(op_array), EX_Ts() TSRMLS_CC);
-
- ZEND_VM_JMP(EX(op_array)->opcodes + el->cont);
-}
-
static int ZEND_FASTCALL
ZEND_BW_NOT_SPEC_CONST_HANDLER(ZEND_OPCODE_HANDLER_ARGS)
{
USE_OPLINE
@@ -36791,55 +36711,55 @@
ZEND_NULL_HANDLER,
ZEND_NULL_HANDLER,
ZEND_BRK_SPEC_CONST_HANDLER,
- ZEND_BRK_SPEC_TMP_HANDLER,
- ZEND_BRK_SPEC_VAR_HANDLER,
ZEND_NULL_HANDLER,
- ZEND_BRK_SPEC_CV_HANDLER,
+ ZEND_NULL_HANDLER,
+ ZEND_NULL_HANDLER,
+ ZEND_NULL_HANDLER,
ZEND_BRK_SPEC_CONST_HANDLER,
- ZEND_BRK_SPEC_TMP_HANDLER,
- ZEND_BRK_SPEC_VAR_HANDLER,
ZEND_NULL_HANDLER,
- ZEND_BRK_SPEC_CV_HANDLER,
+ ZEND_NULL_HANDLER,
+ ZEND_NULL_HANDLER,
+ ZEND_NULL_HANDLER,
ZEND_BRK_SPEC_CONST_HANDLER,
- ZEND_BRK_SPEC_TMP_HANDLER,
- ZEND_BRK_SPEC_VAR_HANDLER,
ZEND_NULL_HANDLER,
- ZEND_BRK_SPEC_CV_HANDLER,
+ ZEND_NULL_HANDLER,
+ ZEND_NULL_HANDLER,
+ ZEND_NULL_HANDLER,
ZEND_BRK_SPEC_CONST_HANDLER,
- ZEND_BRK_SPEC_TMP_HANDLER,
- ZEND_BRK_SPEC_VAR_HANDLER,
ZEND_NULL_HANDLER,
- ZEND_BRK_SPEC_CV_HANDLER,
+ ZEND_NULL_HANDLER,
+ ZEND_NULL_HANDLER,
+ ZEND_NULL_HANDLER,
ZEND_BRK_SPEC_CONST_HANDLER,
- ZEND_BRK_SPEC_TMP_HANDLER,
- ZEND_BRK_SPEC_VAR_HANDLER,
ZEND_NULL_HANDLER,
- ZEND_BRK_SPEC_CV_HANDLER,
+ ZEND_NULL_HANDLER,
+ ZEND_NULL_HANDLER,
+ ZEND_NULL_HANDLER,
ZEND_CONT_SPEC_CONST_HANDLER,
- ZEND_CONT_SPEC_TMP_HANDLER,
- ZEND_CONT_SPEC_VAR_HANDLER,
ZEND_NULL_HANDLER,
- ZEND_CONT_SPEC_CV_HANDLER,
+ ZEND_NULL_HANDLER,
+ ZEND_NULL_HANDLER,
+ ZEND_NULL_HANDLER,
ZEND_CONT_SPEC_CONST_HANDLER,
- ZEND_CONT_SPEC_TMP_HANDLER,
- ZEND_CONT_SPEC_VAR_HANDLER,
ZEND_NULL_HANDLER,
- ZEND_CONT_SPEC_CV_HANDLER,
+ ZEND_NULL_HANDLER,
+ ZEND_NULL_HANDLER,
+ ZEND_NULL_HANDLER,
ZEND_CONT_SPEC_CONST_HANDLER,
- ZEND_CONT_SPEC_TMP_HANDLER,
- ZEND_CONT_SPEC_VAR_HANDLER,
ZEND_NULL_HANDLER,
- ZEND_CONT_SPEC_CV_HANDLER,
+ ZEND_NULL_HANDLER,
+ ZEND_NULL_HANDLER,
+ ZEND_NULL_HANDLER,
ZEND_CONT_SPEC_CONST_HANDLER,
- ZEND_CONT_SPEC_TMP_HANDLER,
- ZEND_CONT_SPEC_VAR_HANDLER,
ZEND_NULL_HANDLER,
- ZEND_CONT_SPEC_CV_HANDLER,
+ ZEND_NULL_HANDLER,
+ ZEND_NULL_HANDLER,
+ ZEND_NULL_HANDLER,
ZEND_CONT_SPEC_CONST_HANDLER,
- ZEND_CONT_SPEC_TMP_HANDLER,
- ZEND_CONT_SPEC_VAR_HANDLER,
ZEND_NULL_HANDLER,
- ZEND_CONT_SPEC_CV_HANDLER,
+ ZEND_NULL_HANDLER,
+ ZEND_NULL_HANDLER,
+ ZEND_NULL_HANDLER,
ZEND_BOOL_SPEC_CONST_HANDLER,
ZEND_BOOL_SPEC_CONST_HANDLER,
ZEND_BOOL_SPEC_CONST_HANDLER,
Index: Zend/zend_compile.c
===================================================================
--- Zend/zend_compile.c (revision 305711)
+++ Zend/zend_compile.c (working copy)
@@ -4302,6 +4302,11 @@
opline->op1.opline_num = CG(context).current_brk_cont;
SET_UNUSED(opline->op1);
if (expr) {
+ if (expr->op_type != IS_CONST) {
+ zend_error(E_COMPILE_ERROR, "'%s' operator with
non-constant operand is no longer supported", op == ZEND_BRK ? "break" :
"continue");
+ } else if (Z_TYPE(expr->u.constant) != IS_LONG ||
Z_LVAL(expr->u.constant) < 1) {
+ zend_error(E_COMPILE_ERROR, "'%s' operator accepts
only positive numbers", op == ZEND_BRK ? "break" : "continue");
+ }
SET_NODE(opline->op2, expr);
} else {
LITERAL_LONG(opline->op2, 1);
Index: Zend/zend_vm_def.h
===================================================================
--- Zend/zend_vm_def.h (revision 305710)
+++ Zend/zend_vm_def.h (working copy)
@@ -3171,27 +3171,25 @@
ZEND_VM_NEXT_OPCODE();
}
-ZEND_VM_HANDLER(50, ZEND_BRK, ANY, CONST|TMP|VAR|CV)
+ZEND_VM_HANDLER(50, ZEND_BRK, ANY, CONST)
{
USE_OPLINE
- zend_free_op free_op2;
zend_brk_cont_element *el;
SAVE_OPLINE();
- el = zend_brk_cont(GET_OP2_ZVAL_PTR(BP_VAR_R),
opline->op1.opline_num,
+ el = zend_brk_cont(Z_LVAL_P(opline->op2.zv), opline->op1.opline_num,
EX(op_array), EX_Ts() TSRMLS_CC);
FREE_OP2();
ZEND_VM_JMP(EX(op_array)->opcodes + el->brk);
}
-ZEND_VM_HANDLER(51, ZEND_CONT, ANY, CONST|TMP|VAR|CV)
+ZEND_VM_HANDLER(51, ZEND_CONT, ANY, CONST)
{
USE_OPLINE
- zend_free_op free_op2;
zend_brk_cont_element *el;
SAVE_OPLINE();
- el = zend_brk_cont(GET_OP2_ZVAL_PTR(BP_VAR_R),
opline->op1.opline_num,
+ el = zend_brk_cont(Z_LVAL_P(opline->op2.zv), opline->op1.opline_num,
EX(op_array), EX_Ts() TSRMLS_CC);
FREE_OP2();
ZEND_VM_JMP(EX(op_array)->opcodes + el->cont);
@@ -3204,7 +3202,7 @@
zend_brk_cont_element *el;
SAVE_OPLINE();
- el = zend_brk_cont(opline->op2.zv, opline->extended_value,
+ el = zend_brk_cont(Z_LVAL_P(opline->op2.zv), opline->extended_value,
EX(op_array), EX_Ts() TSRMLS_CC);
brk_opline = EX(op_array)->opcodes + el->brk;
--
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