From 299e19fb6157987ce308e773a3f63b2f14eaff04 Mon Sep 17 00:00:00 2001
From: Hans-Kristian Arntzen <hans-kristian.arntzen@arm.com>
Date: Tue, 21 Mar 2017 16:33:54 +0100
Subject: [PATCH] Do not crash on unknown extensions.

---
 spirv_common.hpp | 1 +
 spirv_cross.cpp  | 8 +++++++-
 2 files changed, 8 insertions(+), 1 deletion(-)

diff --git a/spirv_common.hpp b/spirv_common.hpp
index 488ae9a2..d7d037fb 100644
--- a/spirv_common.hpp
+++ b/spirv_common.hpp
@@ -292,6 +292,7 @@ struct SPIRExtension : IVariant
 
 	enum Extension
 	{
+		Unsupported,
 		GLSL
 	};
 
diff --git a/spirv_cross.cpp b/spirv_cross.cpp
index 60958a13..4d0b8337 100644
--- a/spirv_cross.cpp
+++ b/spirv_cross.cpp
@@ -1151,6 +1151,10 @@ void Compiler::parse(const Instruction &instruction)
 		break;
 	}
 
+	case OpExtension:
+		// Ignore extensions
+		break;
+
 	case OpExtInstImport:
 	{
 		uint32_t id = ops[0];
@@ -1158,7 +1162,9 @@ void Compiler::parse(const Instruction &instruction)
 		if (ext == "GLSL.std.450")
 			set<SPIRExtension>(id, SPIRExtension::GLSL);
 		else
-			SPIRV_CROSS_THROW("Only GLSL.std.450 extension interface supported.");
+			set<SPIRExtension>(id, SPIRExtension::Unsupported);
+
+		// Other SPIR-V extensions currently not supported.
 
 		break;
 	}