metal: error when generated SPIR-V shader IR can't be parsed

src/modules/graphics/metal/Shader.mm

@@ -30,6 +30,7 @@
 #include "libraries/spirv_cross/spirv_reflect.hpp"
 
 #include <algorithm>
+#include <memory>
 
 namespace love
 {
@@ -456,11 +457,20 @@ void Shader::compileFromGLSLang(id<MTLDevice> device, const glslang::TProgram &p
 		std::string msgs = logger.getAllMessages();
 //		printf("spirv length: %ld, messages:\n%s\n", spirv.size(), msgs.c_str());
 
-		try
-		{
 //		printf("GLSL INPUT SOURCE:\n\n%s\n\n", pixel->getSource().c_str());
 
-			CompilerMSL msl(std::move(spirv));
+		std::unique_ptr<CompilerMSL> mslpointer;
+
+		try
+		{
+			mslpointer.reset(new CompilerMSL(std::move(spirv)));
+		}
+		catch (std::exception &e)
+		{
+			throw love::Exception("Error parsing SPIR-V shader source: %s", e.what());
+		}
+
+		auto &msl = *mslpointer;
 
 		auto interfacevars = msl.get_active_interface_variables();
 
@@ -724,11 +734,6 @@ void Shader::compileFromGLSLang(id<MTLDevice> device, const glslang::TProgram &p
 			}
 		}
 	}
-		catch (std::exception &e)
-		{
-			printf("Error parsing SPIR-V shader source: %s\n", e.what());
-		}
-	}
 
 	// Initialize default resource bindings.
 	for (auto &kvp : uniforms)