From df9f4a10928e80e91fc83c01dc5c49767490398e Mon Sep 17 00:00:00 2001
From: jl777 <jameslee777@yahoo.com>
Date: Thu, 21 Feb 2019 00:22:54 -1100
Subject: [PATCH] ARG_CHECK

---
 src/cc/cclib.cpp | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/src/cc/cclib.cpp b/src/cc/cclib.cpp
index 2ccfcce46..b6a79b32e 100644
--- a/src/cc/cclib.cpp
+++ b/src/cc/cclib.cpp
@@ -601,6 +601,13 @@ uint256 juint256(cJSON *obj)
 #include "../secp256k1/src/hash_impl.h"
 #include "../secp256k1/src/scratch_impl.h"
 
+#define ARG_CHECK(cond) do { \
+if (EXPECT(!(cond), 0)) { \
+secp256k1_callback_call(&ctx->illegal_callback, #cond); \
+return 0; \
+} \
+} while(0)
+
 //#include "../secp256k1/src/secp256k1.c"
 #include "../secp256k1/src/modules/schnorrsig/main_impl.h"
 #include "../secp256k1/src/modules/musig/main_impl.h"