Fix oplog trace with already freed closures

Author: bwoebi

sapi/phpdbg/phpdbg.c

@@ -615,25 +615,24 @@ static PHP_FUNCTION(phpdbg_end_oplog)
 		zend_long insert_idx;
 
 		do {
-			zend_op_array *op_array = cur->op_array;
 			zval zero;
 			ZVAL_LONG(&zero, 0);
 
-			if (op_array->filename != last_file) {
-				last_file = op_array->filename;
+			if (cur->filename != last_file) {
+				last_file = cur->filename;
 				file_ht = insert_ht = phpdbg_add_empty_array(Z_ARR_P(return_value), last_file);
 			}
 
 			if (by_function) {
-				if (op_array->function_name == NULL) {
+				if (cur->function_name == NULL) {
 					if (last_function != NULL) {
 						insert_ht = file_ht;
 					}
 					last_function = NULL;
-				} else if (op_array->function_name != last_function || op_array->scope != last_scope) {
+				} else if (cur->function_name != last_function || cur->scope != last_scope) {
 					zend_string *fn_name;
-					last_function = op_array->function_name;
-					last_scope = op_array->scope;
+					last_function = cur->function_name;
+					last_scope = cur->scope;
 					if (last_scope == NULL) {
 						fn_name = zend_string_copy(last_function);
 					} else {
@@ -645,7 +644,7 @@ static PHP_FUNCTION(phpdbg_end_oplog)
 			}
 
 			if (by_opcode) {
-				insert_idx = cur->op - op_array->opcodes;
+				insert_idx = cur->op - cur->opcodes;
 			} else {
 				insert_idx = cur->op->lineno;
 			}

sapi/phpdbg/phpdbg_list.c

@@ -320,6 +320,7 @@ zend_op_array *phpdbg_init_compile_file(zend_file_handle *file, int type) {
 			*dataptr->op_array->refcount = 2;
 			dataptr->destroy_op_array = 0;
 		}
+			++*dataptr->op_array->refcount;
 	}
 
 	return ret;

sapi/phpdbg/phpdbg_opcode.c

@@ -202,11 +202,17 @@ void phpdbg_print_opline_ex(zend_execute_data *execute_data, zend_bool ignore_fl
 
 	if (PHPDBG_G(oplog_list)) {
 		phpdbg_oplog_entry *cur = zend_arena_alloc(&PHPDBG_G(oplog_arena), sizeof(phpdbg_oplog_entry));
+		zend_op_array *op_array = &execute_data->func->op_array;
 		cur->op = (zend_op *) execute_data->opline;
-		cur->op_array = &execute_data->func->op_array;
+		cur->opcodes = op_array->opcodes;
+		cur->filename = op_array->filename;
+		cur->scope = op_array->scope;
+		cur->function_name = op_array->function_name;
 		cur->next = NULL;
 		PHPDBG_G(oplog_cur)->next = cur;
 		PHPDBG_G(oplog_cur) = cur;
+if (!execute_data->func->op_array.filename)
+printf("ALETR");
 	}
 } /* }}} */
 

sapi/phpdbg/phpdbg_opcode.h

@@ -30,7 +30,10 @@ void phpdbg_print_opline_ex(zend_execute_data *execute_data, zend_bool ignore_fl
 typedef struct _phpdbg_oplog_entry phpdbg_oplog_entry;
 struct _phpdbg_oplog_entry {
 	phpdbg_oplog_entry *next;
-	zend_op_array *op_array;
+	zend_string *function_name;
+	zend_class_entry *scope;
+	zend_string *filename;
+	zend_op *opcodes;
 	zend_op *op;
 };