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authorNikita Popov <nikic@php.net>2015-07-10 13:30:25 +0200
committerDmitry Stogov <dmitry@zend.com>2015-08-04 07:42:28 +0300
commit743801054d83285e19f26a1d00dc81e4f7caeefa (patch)
tree9687bd4a8d79cf5b61115b4822b602715e344b26
parente39c525df8de10d69a40177964128dc07ee94c5b (diff)
downloadphp-git-743801054d83285e19f26a1d00dc81e4f7caeefa.tar.gz
Try to fix finally issue
-rw-r--r--Zend/tests/goto_in_foreach.phpt16
-rw-r--r--Zend/tests/try/try_finally_013.phpt25
-rw-r--r--Zend/tests/try/try_finally_014.phpt27
-rw-r--r--Zend/tests/try/try_finally_015.phpt29
-rw-r--r--Zend/tests/try/try_finally_016.phpt39
-rw-r--r--Zend/tests/try/try_finally_017.phpt42
-rw-r--r--Zend/tests/try/try_finally_018.phpt24
-rw-r--r--Zend/zend_compile.c271
-rw-r--r--Zend/zend_compile.h3
-rw-r--r--Zend/zend_opcode.c40
-rw-r--r--Zend/zend_vm_def.h25
-rw-r--r--Zend/zend_vm_execute.h25
12 files changed, 377 insertions, 189 deletions
diff --git a/Zend/tests/goto_in_foreach.phpt b/Zend/tests/goto_in_foreach.phpt
new file mode 100644
index 0000000000..e618772ba6
--- /dev/null
+++ b/Zend/tests/goto_in_foreach.phpt
@@ -0,0 +1,16 @@
+--TEST--
+goto inside foreach
+--FILE--
+<?php
+
+foreach ([0] as $x) {
+ goto a;
+a:
+ echo "loop\n";
+}
+
+echo "done\n";
+?>
+--EXPECT--
+loop
+done
diff --git a/Zend/tests/try/try_finally_013.phpt b/Zend/tests/try/try_finally_013.phpt
new file mode 100644
index 0000000000..a37df5147d
--- /dev/null
+++ b/Zend/tests/try/try_finally_013.phpt
@@ -0,0 +1,25 @@
+--TEST--
+Return in try and finally inside loop
+--FILE--
+<?php
+
+function foo() {
+ $array = [1, 2, $n = 3];
+ foreach ($array as $value) {
+ try {
+ echo "try\n";
+ return;
+ } finally {
+ echo "finally\n";
+ return;
+ }
+ }
+}
+
+foo();
+?>
+===DONE===
+--EXPECT--
+try
+finally
+===DONE===
diff --git a/Zend/tests/try/try_finally_014.phpt b/Zend/tests/try/try_finally_014.phpt
new file mode 100644
index 0000000000..284892a8b5
--- /dev/null
+++ b/Zend/tests/try/try_finally_014.phpt
@@ -0,0 +1,27 @@
+--TEST--
+Break 2 in try and return in finally inside nested loop
+--FILE--
+<?php
+
+function foo() {
+ $array = [1, 2, $n = 3];
+ foreach ($array as $value) {
+ foreach ($array as $value) {
+ try {
+ echo "try\n";
+ break 2;
+ } finally {
+ echo "finally\n";
+ return;
+ }
+ }
+ }
+}
+
+foo();
+?>
+===DONE===
+--EXPECT--
+try
+finally
+===DONE===
diff --git a/Zend/tests/try/try_finally_015.phpt b/Zend/tests/try/try_finally_015.phpt
new file mode 100644
index 0000000000..d2580a2e33
--- /dev/null
+++ b/Zend/tests/try/try_finally_015.phpt
@@ -0,0 +1,29 @@
+--TEST--
+Ignoring return inside loop using finally
+--FILE--
+<?php
+
+function foo() {
+ $array = [1, 2, $n = 3];
+ foreach ($array as $value) {
+ var_dump($value);
+ try {
+ try {
+ foreach ($array as $_) {
+ return;
+ }
+ } finally {
+ throw new Exception;
+ }
+ } catch (Exception $e) { }
+ }
+}
+
+foo();
+?>
+===DONE===
+--EXPECT--
+int(1)
+int(2)
+int(3)
+===DONE===
diff --git a/Zend/tests/try/try_finally_016.phpt b/Zend/tests/try/try_finally_016.phpt
new file mode 100644
index 0000000000..dc91b42b50
--- /dev/null
+++ b/Zend/tests/try/try_finally_016.phpt
@@ -0,0 +1,39 @@
+--TEST--
+Exception during break 2
+--FILE--
+<?php
+
+class A {
+ public $a = 1;
+ public $b = 2;
+
+ public function __destruct() {
+ throw new Exception;
+ }
+}
+
+function foo() {
+ foreach ([0] as $_) {
+ foreach (new A as $value) {
+ try {
+ break 2;
+ } catch (Exception $e) {
+ echo "catch\n";
+ } finally {
+ echo "finally\n";
+ }
+ }
+ }
+}
+
+try {
+ foo();
+} catch (Exception $e) {
+ echo "outer catch\n";
+}
+?>
+===DONE===
+--EXPECT--
+finally
+outer catch
+===DONE===
diff --git a/Zend/tests/try/try_finally_017.phpt b/Zend/tests/try/try_finally_017.phpt
new file mode 100644
index 0000000000..5ba58afdea
--- /dev/null
+++ b/Zend/tests/try/try_finally_017.phpt
@@ -0,0 +1,42 @@
+--TEST--
+Exception during break 2 with multiple try/catch
+--FILE--
+<?php
+
+class A {
+ public $a = 1;
+ public $b = 2;
+
+ public function __destruct() {
+ throw new Exception;
+ }
+}
+
+function foo() {
+ foreach ([0] as $_) {
+ try {
+ foreach (new A as $value) {
+ try {
+ break 2;
+ } catch (Exception $e) {
+ echo "catch1\n";
+ } finally {
+ echo "finally1\n";
+ }
+ }
+ } catch (Exception $e) {
+ echo "catch2\n";
+ } finally {
+ echo "finally2\n";
+ }
+ }
+}
+
+foo();
+?>
+===DONE===
+--EXPECT--
+finally1
+catch2
+finally2
+===DONE===
diff --git a/Zend/tests/try/try_finally_018.phpt b/Zend/tests/try/try_finally_018.phpt
new file mode 100644
index 0000000000..383b44844e
--- /dev/null
+++ b/Zend/tests/try/try_finally_018.phpt
@@ -0,0 +1,24 @@
+--TEST--
+Combination of foreach, finally and goto
+--FILE--
+<?php
+foreach ([new stdClass] as $a) {
+ try {
+ foreach ([new stdClass] as $a) {
+ try {
+ foreach ([new stdClass] as $a) {
+ goto out;
+ }
+ } finally {
+ echo "finally1\n";
+ }
+out: ;
+ }
+ } finally {
+ echo "finally2\n";
+ }
+}
+?>
+--EXPECT--
+finally1
+finally2
diff --git a/Zend/zend_compile.c b/Zend/zend_compile.c
index 0e9f478f97..63bbee717a 100644
--- a/Zend/zend_compile.c
+++ b/Zend/zend_compile.c
@@ -54,6 +54,13 @@
#define FC(member) (CG(file_context).member)
+typedef struct _zend_loop_var {
+ zend_uchar opcode;
+ uint32_t try_catch_offset;
+ uint32_t brk_cont_offset;
+ znode var;
+} zend_loop_var;
+
static inline void zend_alloc_cache_slot(uint32_t literal) {
zend_op_array *op_array = CG(active_op_array);
Z_CACHE_SLOT(op_array->literals[literal]) = op_array->cache_size;
@@ -284,7 +291,7 @@ void zend_file_context_end(zend_file_context *prev_context) /* {{{ */
void zend_init_compiler_data_structures(void) /* {{{ */
{
- zend_stack_init(&CG(loop_var_stack), sizeof(znode));
+ zend_stack_init(&CG(loop_var_stack), sizeof(zend_loop_var));
zend_stack_init(&CG(delayed_oplines_stack), sizeof(zend_op));
CG(active_class_entry) = NULL;
CG(in_compilation) = 0;
@@ -562,19 +569,25 @@ static inline void zend_begin_loop(const znode *loop_var) /* {{{ */
{
zend_brk_cont_element *brk_cont_element;
int parent = CG(context).current_brk_cont;
+ zend_loop_var info = {0};
CG(context).current_brk_cont = CG(active_op_array)->last_brk_cont;
brk_cont_element = get_next_brk_cont_element(CG(active_op_array));
brk_cont_element->parent = parent;
- if (loop_var) {
- zend_stack_push(&CG(loop_var_stack), loop_var);
+ if (loop_var && (loop_var->op_type & (IS_VAR|IS_TMP_VAR))) {
+ info.opcode = loop_var->flag ? ZEND_FE_FREE : ZEND_FREE;
+ info.var = *loop_var;
+ info.brk_cont_offset = CG(context).current_brk_cont;
brk_cont_element->start = get_next_op_number(CG(active_op_array));
} else {
+ info.opcode = ZEND_NOP;
/* The start field is used to free temporary variables in case of exceptions.
* We won't try to free something of we don't have loop variable. */
brk_cont_element->start = -1;
}
+
+ zend_stack_push(&CG(loop_var_stack), &info);
}
/* }}} */
@@ -586,9 +599,7 @@ static inline void zend_end_loop(int cont_addr) /* {{{ */
brk_cont_element->brk = get_next_op_number(CG(active_op_array));
CG(context).current_brk_cont = brk_cont_element->parent;
- if (brk_cont_element->start >= 0) {
- zend_stack_del_top(&CG(loop_var_stack));
- }
+ zend_stack_del_top(&CG(loop_var_stack));
}
/* }}} */
@@ -877,24 +888,46 @@ static void str_dtor(zval *zv) /* {{{ */ {
static zend_bool zend_is_call(zend_ast *ast);
-static int generate_free_loop_var(znode *var) /* {{{ */
+static zend_loop_var *generate_fast_calls(zend_loop_var *var) /* {{{ */
{
- switch (var->op_type) {
- case IS_UNUSED:
- /* Stack separator on function boundary, stop applying */
- return 1;
- case IS_VAR:
- case IS_TMP_VAR:
- {
- zend_op *opline = get_next_op(CG(active_op_array));
+ zend_loop_var *base = zend_stack_base(&CG(loop_var_stack));
+ for (; var >= base && var->opcode == ZEND_FAST_CALL; var--) {
+ zend_op *opline = get_next_op(CG(active_op_array));
+ opline->opcode = ZEND_FAST_CALL;
+ SET_NODE(opline->result, &var->var);
+ SET_UNUSED(opline->op1);
+ SET_UNUSED(opline->op2);
+ opline->op1.num = var->try_catch_offset;
+ opline->extended_value = ZEND_FAST_CALL_UNBOUND;
+ }
+ return var;
+}
+/* }}} */
- opline->opcode = var->flag ? ZEND_FE_FREE : ZEND_FREE;
- SET_NODE(opline->op1, var);
- SET_UNUSED(opline->op2);
- }
+static zend_loop_var *generate_free_loop_var(zend_loop_var *info) /* {{{ */
+{
+ zend_op *opline;
+ zend_loop_var *base = zend_stack_base(&CG(loop_var_stack));
+ ZEND_ASSERT(info->opcode != ZEND_FAST_CALL);
+
+ if (info < base || info->opcode == ZEND_RETURN) {
+ /* Stack separator */
+ return NULL;
}
- return 0;
+ if (info->opcode == ZEND_NOP) {
+ /* Loop doesn't have freeable variable */
+ return info - 1;
+ }
+
+ ZEND_ASSERT(info->var.op_type == IS_VAR || info->var.op_type == IS_TMP_VAR);
+ opline = get_next_op(CG(active_op_array));
+ opline->opcode = info->opcode;
+ SET_NODE(opline->op1, &info->var);
+ SET_UNUSED(opline->op2);
+ opline->op2.num = info->brk_cont_offset;
+ opline->extended_value = ZEND_FREE_ON_RETURN;
+ return info - 1;
}
/* }}} */
@@ -3464,24 +3497,16 @@ void zend_compile_unset(zend_ast *ast) /* {{{ */
}
/* }}} */
-static void zend_free_foreach_and_switch_variables(uint32_t flags) /* {{{ */
+static void zend_handle_loops_and_finally() /* {{{ */
{
- uint32_t start_op_number = get_next_op_number(CG(active_op_array));
-
- zend_stack_apply(&CG(loop_var_stack), ZEND_STACK_APPLY_TOPDOWN, (int (*)(void *element)) generate_free_loop_var);
-
- if (flags) {
- uint32_t end_op_number = get_next_op_number(CG(active_op_array));
-
- while (start_op_number < end_op_number) {
- CG(active_op_array)->opcodes[start_op_number].extended_value |= flags;
- start_op_number++;
- }
+ zend_loop_var *loop_var = zend_stack_top(&CG(loop_var_stack));
+ while (loop_var) {
+ loop_var = generate_fast_calls(loop_var);
+ loop_var = generate_free_loop_var(loop_var);
}
}
/* }}} */
-
void zend_compile_return(zend_ast *ast) /* {{{ */
{
zend_ast *expr_ast = ast->child[0];
@@ -3499,7 +3524,7 @@ void zend_compile_return(zend_ast *ast) /* {{{ */
zend_compile_expr(&expr_node, expr_ast);
}
- zend_free_foreach_and_switch_variables(ZEND_FREE_ON_RETURN);
+ zend_handle_loops_and_finally();
if (CG(context).in_finally) {
opline = zend_emit_op(NULL, ZEND_DISCARD_EXCEPTION, NULL, NULL);
@@ -3579,7 +3604,7 @@ void zend_compile_break_continue(zend_ast *ast) /* {{{ */
} else {
int array_offset = CG(context).current_brk_cont;
zend_long nest_level = depth;
- znode *loop_var = zend_stack_top(&CG(loop_var_stack));
+ zend_loop_var *loop_var = zend_stack_top(&CG(loop_var_stack));
do {
if (array_offset == -1) {
@@ -3588,9 +3613,9 @@ void zend_compile_break_continue(zend_ast *ast) /* {{{ */
depth, depth == 1 ? "" : "s");
}
- if (nest_level > 1 && CG(active_op_array)->brk_cont_array[array_offset].start >= 0) {
- generate_free_loop_var(loop_var);
- loop_var--;
+ loop_var = generate_fast_calls(loop_var);
+ if (nest_level > 1) {
+ loop_var = generate_free_loop_var(loop_var);
}
array_offset = CG(active_op_array)->brk_cont_array[array_offset].parent;
@@ -3602,115 +3627,65 @@ void zend_compile_break_continue(zend_ast *ast) /* {{{ */
}
/* }}} */
-void zend_resolve_goto_label(zend_op_array *op_array, znode *label_node, zend_op *pass2_opline) /* {{{ */
+zend_op *zend_resolve_goto_label(zend_op_array *op_array, zend_op *opline) /* {{{ */
{
zend_label *dest;
- int current, distance, free_vars;
+ int current, remove_oplines = opline->op1.num;
zval *label;
- znode *loop_var = NULL;
+ uint32_t opnum = opline - op_array->opcodes;
- if (pass2_opline) {
- label = CT_CONSTANT_EX(op_array, pass2_opline->op2.constant);
- } else {
- label = &label_node->u.constant;
- }
+ label = CT_CONSTANT_EX(op_array, opline->op2.constant);
if (CG(context).labels == NULL ||
- (dest = zend_hash_find_ptr(CG(context).labels, Z_STR_P(label))) == NULL) {
-
- if (pass2_opline) {
- CG(in_compilation) = 1;
- CG(active_op_array) = op_array;
- CG(zend_lineno) = pass2_opline->lineno;
- zend_error_noreturn(E_COMPILE_ERROR, "'goto' to undefined label '%s'", Z_STRVAL_P(label));
- } else {
- /* Label is not defined. Delay to pass 2. */
- zend_op *opline;
-
- current = CG(context).current_brk_cont;
- while (current != -1) {
- if (op_array->brk_cont_array[current].start >= 0) {
- zend_emit_op(NULL, ZEND_NOP, NULL, NULL);
- }
- current = op_array->brk_cont_array[current].parent;
- }
- opline = zend_emit_op(NULL, ZEND_GOTO, NULL, label_node);
- opline->extended_value = CG(context).current_brk_cont;
- return;
- }
+ (dest = zend_hash_find_ptr(CG(context).labels, Z_STR_P(label))) == NULL
+ ) {
+ CG(in_compilation) = 1;
+ CG(active_op_array) = op_array;
+ CG(zend_lineno) = opline->lineno;
+ zend_error_noreturn(E_COMPILE_ERROR, "'goto' to undefined label '%s'", Z_STRVAL_P(label));
}
zval_dtor(label);
ZVAL_NULL(label);
- /* Check that we are not moving into loop or switch */
- if (pass2_opline) {
- current = pass2_opline->extended_value;
- } else {
- current = CG(context).current_brk_cont;
- }
- if (!pass2_opline) {
- loop_var = zend_stack_top(&CG(loop_var_stack));
- }
- for (distance = 0, free_vars = 0; current != dest->brk_cont; distance++) {
+ current = opline->extended_value;
+ for (; current != dest->brk_cont; current = op_array->brk_cont_array[current].parent) {
if (current == -1) {
- if (pass2_opline) {
- CG(in_compilation) = 1;
- CG(active_op_array) = op_array;
- CG(zend_lineno) = pass2_opline->lineno;
- }
+ CG(in_compilation) = 1;
+ CG(active_op_array) = op_array;
+ CG(zend_lineno) = opline->lineno;
zend_error_noreturn(E_COMPILE_ERROR, "'goto' into loop or switch statement is disallowed");
}
if (op_array->brk_cont_array[current].start >= 0) {
- if (pass2_opline) {
- free_vars++;
- } else {
- generate_free_loop_var(loop_var);
- loop_var--;
- }
+ remove_oplines--;
}
- current = op_array->brk_cont_array[current].parent;
}
- if (pass2_opline) {
- if (free_vars) {
- current = pass2_opline->extended_value;
- while (current != dest->brk_cont) {
- if (op_array->brk_cont_array[current].start >= 0) {
- zend_op *brk_opline = &op_array->opcodes[op_array->brk_cont_array[current].brk];
-
- if (brk_opline->opcode == ZEND_FREE) {
- (pass2_opline - free_vars)->opcode = ZEND_FREE;
- (pass2_opline - free_vars)->op1_type = brk_opline->op1_type;
- if (op_array->fn_flags & ZEND_ACC_HAS_FINALLY_BLOCK) {
- (pass2_opline - free_vars)->op1.var = brk_opline->op1.var;
- } else {
- (pass2_opline - free_vars)->op1.var = (uint32_t)(zend_intptr_t)ZEND_CALL_VAR_NUM(NULL, op_array->last_var + brk_opline->op1.var);
- ZEND_VM_SET_OPCODE_HANDLER(pass2_opline - free_vars);
- }
- free_vars--;
- } else if (brk_opline->opcode == ZEND_FE_FREE) {
- (pass2_opline - free_vars)->opcode = ZEND_FE_FREE;
- (pass2_opline - free_vars)->op1_type = brk_opline->op1_type;
- if (op_array->fn_flags & ZEND_ACC_HAS_FINALLY_BLOCK) {
- (pass2_opline - free_vars)->op1.var = brk_opline->op1.var;
- } else {
- (pass2_opline - free_vars)->op1.var = (uint32_t)(zend_intptr_t)ZEND_CALL_VAR_NUM(NULL, op_array->last_var + brk_opline->op1.var);
- ZEND_VM_SET_OPCODE_HANDLER(pass2_opline - free_vars);
- }
- free_vars--;
- }
- }
- current = op_array->brk_cont_array[current].parent;
- }
+ for (current = 0; current < op_array->last_try_catch; ++current) {
+ zend_try_catch_element *elem = &op_array->try_catch_array[current];
+ if (elem->try_op > opnum) {
+ break;
}
- pass2_opline->opcode = ZEND_JMP;
- pass2_opline->op1.opline_num = dest->opline_num;
- SET_UNUSED(pass2_opline->op2);
- pass2_opline->extended_value = 0;
- } else {
- zend_op *opline = zend_emit_op(NULL, ZEND_JMP, NULL, NULL);
- opline->op1.opline_num = dest->opline_num;
+ if (elem->finally_op && opnum < elem->finally_op - 1
+ && (dest->opline_num > elem->finally_end || dest->opline_num < elem->try_op)
+ ) {
+ remove_oplines--;
+ }
+ }
+
+ ZEND_ASSERT(remove_oplines >= 0);
+ while (remove_oplines--) {
+ MAKE_NOP(opline);
+ opline--;
}
+
+ opline->opcode = ZEND_JMP;
+ opline->op1.opline_num = dest->opline_num;
+ opline->extended_value = 0;
+ SET_UNUSED(opline->op1);
+ SET_UNUSED(opline->op2);
+ SET_UNUSED(opline->result);
+
+ return opline;
}
/* }}} */
@@ -3718,9 +3693,16 @@ void zend_compile_goto(zend_ast *ast) /* {{{ */
{
zend_ast *label_ast = ast->child[0];
znode label_node;
+ zend_op *opline;
+ uint32_t opnum_start = get_next_op_number(CG(active_op_array));
zend_compile_expr(&label_node, label_ast);
- zend_resolve_goto_label(CG(active_op_array), &label_node, NULL);
+
+ /* Label resolution and unwinding adjustments happen in pass two. */
+ zend_handle_loops_and_finally();
+ opline = zend_emit_op(NULL, ZEND_GOTO, NULL, &label_node);
+ opline->op1.num = get_next_op_number(CG(active_op_array)) - opnum_start - 1;
+ opline->extended_value = CG(context).current_brk_cont;
}
/* }}} */
@@ -3908,7 +3890,7 @@ void zend_compile_foreach(zend_ast *ast) /* {{{ */
zend_emit_assign_znode(key_ast, &key_node);
}
- reset_node.flag = 1; /* generate FE_FREE */
+ reset_node.flag = ZEND_FE_FREE;
zend_begin_loop(&reset_node);
zend_compile_stmt(stmt_ast);
@@ -3923,7 +3905,7 @@ void zend_compile_foreach(zend_ast *ast) /* {{{ */
zend_end_loop(opnum_fetch);
- generate_free_loop_var(&reset_node);
+ zend_emit_op(NULL, ZEND_FE_FREE, &reset_node, NULL);
}
/* }}} */
@@ -4084,6 +4066,21 @@ void zend_compile_try(zend_ast *ast) /* {{{ */
try_catch_offset = zend_add_try_element(get_next_op_number(CG(active_op_array)));
+ if (finally_ast) {
+ zend_loop_var fast_call;
+ if (!(CG(active_op_array)->fn_flags & ZEND_ACC_HAS_FINALLY_BLOCK)) {
+ CG(active_op_array)->fn_flags |= ZEND_ACC_HAS_FINALLY_BLOCK;
+ CG(context).fast_call_var = get_temporary_variable(CG(active_op_array));
+ }
+
+ /* Push FAST_CALL on unwind stack */
+ fast_call.opcode = ZEND_FAST_CALL;
+ fast_call.var.op_type = IS_TMP_VAR;
+ fast_call.var.u.op.var = CG(context).fast_call_var;
+ fast_call.try_catch_offset = try_catch_offset;
+ zend_stack_push(&CG(loop_var_stack), &fast_call);
+ }
+
zend_compile_stmt(try_ast);
if (catches->children != 0) {
@@ -4137,11 +4134,9 @@ void zend_compile_try(zend_ast *ast) /* {{{ */
if (finally_ast) {
uint32_t opnum_jmp = get_next_op_number(CG(active_op_array)) + 1;
-
- if (!(CG(active_op_array)->fn_flags & ZEND_ACC_HAS_FINALLY_BLOCK)) {
- CG(active_op_array)->fn_flags |= ZEND_ACC_HAS_FINALLY_BLOCK;
- CG(context).fast_call_var = get_temporary_variable(CG(active_op_array));
- }
+
+ /* Pop FAST_CALL from unwind stack */
+ zend_stack_del_top(&CG(loop_var_stack));
opline = zend_emit_op(NULL, ZEND_FAST_CALL, NULL, NULL);
opline->op1.opline_num = opnum_jmp + 1;
@@ -4831,8 +4826,8 @@ void zend_compile_func_decl(znode *result, zend_ast *ast) /* {{{ */
{
/* Push a separator to the loop variable stack */
- znode dummy_var;
- dummy_var.op_type = IS_UNUSED;
+ zend_loop_var dummy_var;
+ dummy_var.opcode = ZEND_RETURN;
zend_stack_push(&CG(loop_var_stack), (void *) &dummy_var);
}
diff --git a/Zend/zend_compile.h b/Zend/zend_compile.h
index 06796aab83..265a97db07 100644
--- a/Zend/zend_compile.h
+++ b/Zend/zend_compile.h
@@ -712,7 +712,7 @@ void zend_do_extended_fcall_end(void);
void zend_verify_namespace(void);
-void zend_resolve_goto_label(zend_op_array *op_array, znode *label_node, zend_op *pass2_opline);
+zend_op *zend_resolve_goto_label(zend_op_array *op_array, zend_op *pass2_opline);
ZEND_API void function_add_ref(zend_function *function);
@@ -946,6 +946,7 @@ static zend_always_inline int zend_check_arg_send_type(const zend_function *zf,
#define ZEND_FAST_RET_TO_FINALLY 2
#define ZEND_FAST_CALL_FROM_FINALLY 1
+#define ZEND_FAST_CALL_UNBOUND 2
#define ZEND_ARRAY_ELEMENT_REF (1<<0)
#define ZEND_ARRAY_NOT_PACKED (1<<1)
diff --git a/Zend/zend_opcode.c b/Zend/zend_opcode.c
index 347761e9a8..9ead514650 100644
--- a/Zend/zend_opcode.c
+++ b/Zend/zend_opcode.c
@@ -561,7 +561,7 @@ static void zend_resolve_finally_call(zend_op_array *op_array, uint32_t op_num,
zend_check_finally_breakout(op_array, op_num, dst_num);
}
- /* the backward order is mater */
+ /* the backward order matters */
while (i > 0) {
i--;
if (op_array->try_catch_array[i].finally_op &&
@@ -591,22 +591,16 @@ static void zend_resolve_finally_call(zend_op_array *op_array, uint32_t op_num,
zend_resolve_fast_call(op_array, start_op, op_array->try_catch_array[i].finally_op - 2);
opline->op1.opline_num = op_array->try_catch_array[i].finally_op;
- /* generate a sequence of FAST_CALL to upward finally block */
+ /* We should not generate JMPs that require handling multiple finally blocks */
while (i > 0) {
i--;
if (op_array->try_catch_array[i].finally_op &&
op_num >= op_array->try_catch_array[i].try_op &&
op_num < op_array->try_catch_array[i].finally_op - 1 &&
(dst_num < op_array->try_catch_array[i].try_op ||
- dst_num > op_array->try_catch_array[i].finally_end)) {
-
- opline = get_next_op(op_array);
- opline->opcode = ZEND_FAST_CALL;
- opline->result_type = IS_TMP_VAR;
- opline->result.var = fast_call_var;
- SET_UNUSED(opline->op1);
- SET_UNUSED(opline->op2);
- opline->op1.opline_num = op_array->try_catch_array[i].finally_op;
+ dst_num > op_array->try_catch_array[i].finally_end)
+ ) {
+ ZEND_ASSERT(0);
}
}
@@ -676,31 +670,27 @@ static void zend_resolve_finally_calls(zend_op_array *op_array)
for (i = 0, j = op_array->last; i < j; i++) {
opline = op_array->opcodes + i;
switch (opline->opcode) {
- case ZEND_RETURN:
- case ZEND_RETURN_BY_REF:
- case ZEND_GENERATOR_RETURN:
- zend_resolve_finally_call(op_array, i, (uint32_t)-1);
- break;
case ZEND_BRK:
case ZEND_CONT:
- zend_resolve_finally_call(op_array, i, zend_get_brk_cont_target(op_array, opline));
+ zend_check_finally_breakout(op_array, i, zend_get_brk_cont_target(op_array, opline));
break;
case ZEND_GOTO:
- if (Z_TYPE_P(CT_CONSTANT_EX(op_array, opline->op2.constant)) != IS_LONG) {
- zend_resolve_goto_label(op_array, NULL, opline);
- }
- /* break omitted intentionally */
+ zend_check_finally_breakout(op_array, i,
+ zend_resolve_goto_label(op_array, opline)->op1.opline_num);
+ break;
case ZEND_JMP:
zend_resolve_finally_call(op_array, i, opline->op1.opline_num);
break;
case ZEND_FAST_CALL:
+ if (opline->extended_value == ZEND_FAST_CALL_UNBOUND) {
+ opline->op1.opline_num = op_array->try_catch_array[opline->op1.num].finally_op;
+ opline->extended_value = 0;
+ }
zend_resolve_fast_call(op_array, i, i);
break;
case ZEND_FAST_RET:
zend_resolve_finally_ret(op_array, i);
break;
- default:
- break;
}
}
}
@@ -756,9 +746,7 @@ ZEND_API int pass_two(zend_op_array *op_array)
}
break;
case ZEND_GOTO:
- if (Z_TYPE_P(CT_CONSTANT_EX(op_array, opline->op2.constant)) != IS_LONG) {
- zend_resolve_goto_label(op_array, NULL, opline);
- }
+ opline = zend_resolve_goto_label(op_array, opline);
/* break omitted intentionally */
case ZEND_JMP:
case ZEND_FAST_CALL:
diff --git a/Zend/zend_vm_def.h b/Zend/zend_vm_def.h
index 3e460d1590..10b947d7d2 100644
--- a/Zend/zend_vm_def.h
+++ b/Zend/zend_vm_def.h
@@ -7075,6 +7075,19 @@ ZEND_VM_HANDLER(149, ZEND_HANDLE_EXCEPTION, ANY, ANY)
int in_finally = 0;
ZEND_VM_INTERRUPT_CHECK();
+
+ {
+ const zend_op *exc_opline = EG(opline_before_exception);
+ if ((exc_opline->opcode == ZEND_FREE || exc_opline->opcode == ZEND_FE_FREE)
+ && exc_opline->extended_value & ZEND_FREE_ON_RETURN) {
+ /* exceptions thrown because of loop var destruction on return/break/...
+ * are logically thrown at the end of the foreach loop, so adjust the
+ * op_num.
+ */
+ op_num = EX(func)->op_array.brk_cont_array[exc_opline->op2.num].brk;
+ }
+ }
+
for (i = 0; i < EX(func)->op_array.last_try_catch; i++) {
if (EX(func)->op_array.try_catch_array[i].try_op > op_num) {
/* further blocks will not be relevant... */
@@ -7095,18 +7108,6 @@ ZEND_VM_HANDLER(149, ZEND_HANDLE_EXCEPTION, ANY, ANY)
}
}
- if (catch_op_num) {
- if ((EX(func)->op_array.opcodes[op_num].opcode == ZEND_FREE && (EX(func)->op_array.opcodes[op_num].extended_value & ZEND_FREE_ON_RETURN))
- || (EX(func)->op_array.opcodes[op_num].opcode == ZEND_FE_FREE && (EX(func)->op_array.opcodes[op_num].extended_value & ZEND_FREE_ON_RETURN))
- ) {
- /* exceptions thrown because of TMP variable destruction on "return"
- * statement should't be caught in the same function.
- * See: Zend/tests/try_finally_012.phpt
- */
- catch_op_num = 0;
- }
- }
-
i_cleanup_unfinished_execution(execute_data, op_num, catch_op_num);
if (finally_op_num && (!catch_op_num || catch_op_num >= finally_op_num)) {
diff --git a/Zend/zend_vm_execute.h b/Zend/zend_vm_execute.h
index ca7120aa12..c580ba04d7 100644
--- a/Zend/zend_vm_execute.h
+++ b/Zend/zend_vm_execute.h
@@ -1480,6 +1480,19 @@ static ZEND_OPCODE_HANDLER_RET ZEND_FASTCALL ZEND_HANDLE_EXCEPTION_SPEC_HANDLER(
int in_finally = 0;
ZEND_VM_INTERRUPT_CHECK();
+
+ {
+ const zend_op *exc_opline = EG(opline_before_exception);
+ if ((exc_opline->opcode == ZEND_FREE || exc_opline->opcode == ZEND_FE_FREE)
+ && exc_opline->extended_value & ZEND_FREE_ON_RETURN) {
+ /* exceptions thrown because of loop var destruction on return/break/...
+ * are logically thrown at the end of the foreach loop, so adjust the
+ * op_num.
+ */
+ op_num = EX(func)->op_array.brk_cont_array[exc_opline->op2.num].brk;
+ }
+ }
+
for (i = 0; i < EX(func)->op_array.last_try_catch; i++) {
if (EX(func)->op_array.try_catch_array[i].try_op > op_num) {
/* further blocks will not be relevant... */
@@ -1500,18 +1513,6 @@ static ZEND_OPCODE_HANDLER_RET ZEND_FASTCALL ZEND_HANDLE_EXCEPTION_SPEC_HANDLER(
}
}
- if (catch_op_num) {
- if ((EX(func)->op_array.opcodes[op_num].opcode == ZEND_FREE && (EX(func)->op_array.opcodes[op_num].extended_value & ZEND_FREE_ON_RETURN))
- || (EX(func)->op_array.opcodes[op_num].opcode == ZEND_FE_FREE && (EX(func)->op_array.opcodes[op_num].extended_value & ZEND_FREE_ON_RETURN))
- ) {
- /* exceptions thrown because of TMP variable destruction on "return"
- * statement should't be caught in the same function.
- * See: Zend/tests/try_finally_012.phpt
- */
- catch_op_num = 0;
- }
- }
-
i_cleanup_unfinished_execution(execute_data, op_num, catch_op_num);
if (finally_op_num && (!catch_op_num || catch_op_num >= finally_op_num)) {