From acc8cbd75f41d2352291c98d288731c2b483ad83 Mon Sep 17 00:00:00 2001
From: cozis <heibyob@gmail.com>
Date: Tue, 2 Nov 2021 13:34:23 +0000
Subject: [PATCH] added maximum nested call limit

---
 samples/func.noja     | 5 +++++
 src/runtime/runtime.c | 9 +++++++++
 2 files changed, 14 insertions(+)

diff --git a/samples/func.noja b/samples/func.noja
index 75913d2..13fad58 100644
--- a/samples/func.noja
+++ b/samples/func.noja
@@ -1,4 +1,9 @@
 
+fun k(k)
+	return k();
+
+k(k);
+
 fun x(a, b, c)
 	print(a, b, c);
 
diff --git a/src/runtime/runtime.c b/src/runtime/runtime.c
index 6c0cf42..9153d03 100644
--- a/src/runtime/runtime.c
+++ b/src/runtime/runtime.c
@@ -4,6 +4,7 @@
 #include "runtime.h"
 
 #define MAX_FRAME_STACK 16
+#define MAX_FRAMES 1024
 
 typedef struct Frame Frame;
 
@@ -674,6 +675,14 @@ Object *run(Runtime *runtime, Error *error, Executable *exe, int index, Object *
 	assert(exe != NULL);
 	assert(index >= 0);
 	assert(argc >= 0);
+
+	if(runtime->depth == MAX_FRAMES)
+		{
+			Error_Report(error, 1, "Maximum nested call limit of %d was reached", MAX_FRAMES);
+			return NULL;
+		}
+
+	assert(runtime->depth < MAX_FRAMES);
 		
 	// Initialize the frame.
 	Frame frame;