Update CallStack.hx (#9947)

std/haxe/CallStack.hx

@@ -56,12 +56,13 @@ abstract CallStack(Array<StackItem>) from Array<StackItem> {
 		Return the exception stack : this is the stack elements between
 		the place the last exception was thrown and the place it was
 		caught, or an empty array if not available.
+		Set `fullStack` parameter to true in order to return the full exception stack.
 
 		May not work if catch type was a derivative from `haxe.Exception`.
 	**/
-	public static function exceptionStack():Array<StackItem> {
+	public static function exceptionStack( fullStack = false ):Array<StackItem> {
 		var eStack:CallStack = NativeStackTrace.toHaxe(NativeStackTrace.exceptionStack());
-		return eStack.subtract(callStack()).asArray();
+		return (fullStack ? eStack : eStack.subtract(callStack())).asArray();
 	}
 
 	/**
@@ -181,4 +182,4 @@ abstract CallStack(Array<StackItem>) from Array<StackItem> {
 				b.add(n);
 		}
 	}
-}
+}