From 9c41e5804e4ac7675db94a8a3efa5b28454622fc Mon Sep 17 00:00:00 2001
From: Yann Collet <cyan@fb.com>
Date: Mon, 15 Apr 2019 02:11:59 -0700
Subject: [PATCH] assert() the failed test

ensure canary remains within buffer limits
---
 tests/frametest.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/tests/frametest.c b/tests/frametest.c
index e4205a3..b1c7c02 100644
--- a/tests/frametest.c
+++ b/tests/frametest.c
@@ -893,6 +893,7 @@ int fuzzerTests(U32 seed, unsigned nbTests, unsigned startTest, double compressi
                 DISPLAYLEVEL(7,"canaryByte at pos %u / %u \n",
                             (unsigned)((size_t)(op - (BYTE*)compressedBuffer) + dstEndSize),
                             (unsigned)compressedBufferSize);
+                assert(op + dstEndSize < (BYTE*)compressedBuffer + compressedBufferSize);
                 op[dstEndSize] = canaryByte;
                 result = LZ4F_compressEnd(cCtx, op, dstEndSize, &cOptions);
                 CHECK(op[dstEndSize] != canaryByte, "LZ4F_compressEnd writes beyond dstCapacity !");
-- 
2.7.4