Fixed compiler reenterability

Author: dstogov

Zend/zend_compile.c

@@ -219,6 +219,7 @@ ZEND_API void file_handle_dtor(zend_file_handle *fh) /* {{{ */
 void init_compiler(TSRMLS_D) /* {{{ */
 {
 	CG(active_op_array) = NULL;
+	memset(&CG(context), 0, sizeof(CG(context)));
 	zend_init_compiler_data_structures(TSRMLS_C);
 	zend_init_rsrc_list(TSRMLS_C);
 	zend_hash_init(&CG(filenames_table), 5, NULL, (dtor_func_t) free_estring, 0);

Zend/zend_language_scanner.l

@@ -578,6 +578,7 @@ ZEND_API zend_op_array *compile_file(zend_file_handle *file_handle, int type TSR
 		init_op_array(op_array, ZEND_USER_FUNCTION, INITIAL_OP_ARRAY_SIZE TSRMLS_CC);
 		CG(in_compilation) = 1;
 		CG(active_op_array) = op_array;
+		zend_stack_push(&CG(context_stack), (void *) &CG(context), sizeof(CG(context)));
 		zend_init_compiler_context(TSRMLS_C);
 		compiler_result = zendparse(TSRMLS_C);
 		zend_do_return(&retval_znode, 0 TSRMLS_CC);
@@ -747,6 +748,7 @@ zend_op_array *compile_string(zval *source_string, char *filename TSRMLS_DC)
 		init_op_array(op_array, ZEND_EVAL_CODE, INITIAL_OP_ARRAY_SIZE TSRMLS_CC);
 		CG(interactive) = orig_interactive;
 		CG(active_op_array) = op_array;
+		zend_stack_push(&CG(context_stack), (void *) &CG(context), sizeof(CG(context)));
 		zend_init_compiler_context(TSRMLS_C);
 		BEGIN(ST_IN_SCRIPTING);
 		compiler_result = zendparse(TSRMLS_C);