Fixed compilation on Windows

Zend/zend.h

@@ -181,6 +181,8 @@ char *alloca ();
 # define ZEND_ALLOCA_MAX_SIZE (32 * 1024)
 # define ALLOCA_FLAG(name) \
 	zend_bool name;
+# define SET_ALLOCA_FLAG(name) \
+	name = 1
 # define do_alloca_ex(size, limit, use_heap) \
 	((use_heap = (UNEXPECTED((size) > (limit)))) ? emalloc(size) : alloca(size))
 # define do_alloca(size, use_heap) \
@@ -189,6 +191,7 @@ char *alloca ();
 	do { if (UNEXPECTED(use_heap)) efree(p); } while (0)
 #else
 # define ALLOCA_FLAG(name)
+# define SET_ALLOCA_FLAG(name)
 # define do_alloca(p, use_heap)		emalloc(p)
 # define free_alloca(p, use_heap)	efree(p)
 #endif

Zend/zend_vm_execute.h

@@ -48,7 +48,7 @@ ZEND_API void execute(zend_op_array *op_array TSRMLS_DC)
 	if (EXPECTED(op_array->T < TEMP_VAR_STACK_LIMIT && op_array->last_var < TEMP_VAR_STACK_LIMIT)) {
 		EX(CVs) = (zval***)do_alloca(sizeof(zval**) * op_array->last_var + sizeof(temp_variable) * op_array->T, EX(use_heap));
 	} else {
-		EX(use_heap) = 1;
+		SET_ALLOCA_FLAG(EX(use_heap));
 		EX(CVs) = (zval***)safe_emalloc(sizeof(temp_variable), op_array->T, sizeof(zval**) * op_array->last_var);
 	}
 	EX(Ts) = (temp_variable *)(EX(CVs) + op_array->last_var);

Zend/zend_vm_execute.skl

@@ -19,7 +19,7 @@ ZEND_API void {%EXECUTOR_NAME%}(zend_op_array *op_array TSRMLS_DC)
 	if (EXPECTED(op_array->T < TEMP_VAR_STACK_LIMIT && op_array->last_var < TEMP_VAR_STACK_LIMIT)) {
 		EX(CVs) = (zval***)do_alloca(sizeof(zval**) * op_array->last_var + sizeof(temp_variable) * op_array->T, EX(use_heap));
 	} else {
-		EX(use_heap) = 1;
+		SET_ALLOCA_FLAG(EX(use_heap));
 		EX(CVs) = (zval***)safe_emalloc(sizeof(temp_variable), op_array->T, sizeof(zval**) * op_array->last_var);
 	}
 	EX(Ts) = (temp_variable *)(EX(CVs) + op_array->last_var);