Fix a copy-pasto.

reference/opt/shaders-msl/asm/vert/copy-memory-interface.asm.vert

@@ -0,0 +1,25 @@
+#include <metal_stdlib>
+#include <simd/simd.h>
+
+using namespace metal;
+
+struct main0_out
+{
+    float4 o1 [[user(locn1)]];
+    float4 gl_Position [[position]];
+};
+
+struct main0_in
+{
+    float4 v0 [[attribute(0)]];
+    float4 v1 [[attribute(1)]];
+};
+
+vertex main0_out main0(main0_in in [[stage_in]])
+{
+    main0_out out = {};
+    out.gl_Position = in.v0;
+    out.o1 = in.v1;
+    return out;
+}
+

reference/shaders-msl/asm/vert/copy-memory-interface.asm.vert

@@ -0,0 +1,25 @@
+#include <metal_stdlib>
+#include <simd/simd.h>
+
+using namespace metal;
+
+struct main0_out
+{
+    float4 o1 [[user(locn1)]];
+    float4 gl_Position [[position]];
+};
+
+struct main0_in
+{
+    float4 v0 [[attribute(0)]];
+    float4 v1 [[attribute(1)]];
+};
+
+vertex main0_out main0(main0_in in [[stage_in]])
+{
+    main0_out out = {};
+    out.gl_Position = in.v0;
+    out.o1 = in.v1;
+    return out;
+}
+

shaders-msl/asm/vert/copy-memory-interface.asm.vert

@@ -0,0 +1,33 @@
+; SPIR-V
+; Version: 1.0
+; Generator: Wine VKD3D Shader Compiler; 1
+; Bound: 13
+; Schema: 0
+               OpCapability Shader
+               OpMemoryModel Logical GLSL450
+               OpEntryPoint Vertex %1 "main" %8 %9 %11 %12
+               OpName %1 "main"
+               OpName %8 "v0"
+               OpName %9 "v1"
+               OpName %11 "o0"
+               OpName %12 "o1"
+               OpDecorate %8 Location 0
+               OpDecorate %9 Location 1
+               OpDecorate %11 BuiltIn Position
+               OpDecorate %12 Location 1
+          %2 = OpTypeVoid
+          %3 = OpTypeFunction %2
+          %5 = OpTypeFloat 32
+          %6 = OpTypeVector %5 4
+          %7 = OpTypePointer Input %6
+          %8 = OpVariable %7 Input
+          %9 = OpVariable %7 Input
+         %10 = OpTypePointer Output %6
+         %11 = OpVariable %10 Output
+         %12 = OpVariable %10 Output
+          %1 = OpFunction %2 None %3
+          %4 = OpLabel
+               OpCopyMemory %11 %8
+               OpCopyMemory %12 %9
+               OpReturn
+               OpFunctionEnd

spirv_cross.cpp

@@ -648,11 +648,11 @@ bool Compiler::InterfaceVariableAccessHandler::handle(Op opcode, const uint32_t
 
 		auto *var = compiler.maybe_get<SPIRVariable>(args[0]);
 		if (var && storage_class_is_interface(var->storage))
-			variables.insert(variable);
+			variables.insert(args[0]);
 
 		var = compiler.maybe_get<SPIRVariable>(args[1]);
 		if (var && storage_class_is_interface(var->storage))
-			variables.insert(variable);
+			variables.insert(args[1]);
 		break;
 	}