From b6270f48cabf8abc9b135cc68feea7b40e802797 Mon Sep 17 00:00:00 2001
From: Dejan Mircevski <deki@google.com>
Date: Mon, 25 Apr 2016 15:12:54 -0400
Subject: [PATCH] Avoid dereferencing invalid spv_binary.

Fixes #371.
---
 external/vulkancts/framework/vulkan/vkSpirVAsm.cpp | 8 ++++++--
 1 file changed, 6 insertions(+), 2 deletions(-)

diff --git a/external/vulkancts/framework/vulkan/vkSpirVAsm.cpp b/external/vulkancts/framework/vulkan/vkSpirVAsm.cpp
index db39634..464bdbe 100644
--- a/external/vulkancts/framework/vulkan/vkSpirVAsm.cpp
+++ b/external/vulkancts/framework/vulkan/vkSpirVAsm.cpp
@@ -59,8 +59,12 @@ bool assembleSpirV (const SpirVAsmSource* program, std::vector<deUint32>* dst, S
 		buildInfo->compileTimeUs	= deGetMicroseconds() - compileStartTime;
 		buildInfo->compileOk		= (compileOk == SPV_SUCCESS);
 
-		dst->resize(binary->wordCount);
-		std::copy(&binary->code[0], &binary->code[0] + binary->wordCount, dst->begin());
+		if (buildInfo->compileOk)
+		{
+			DE_ASSERT(binary->wordCount > 0);
+			dst->resize(binary->wordCount);
+			std::copy(&binary->code[0], &binary->code[0] + binary->wordCount, dst->begin());
+		}
 
 		spvBinaryDestroy(binary);
 		spvDiagnosticDestroy(diagnostic);
-- 
2.7.4