Fail on an unhandled spv operand (#3052)

Co-authored-by: Yong He <yonghe@outlook.com>

1 files changed, 1 insertions, 1 deletions

diff --git a/source/slang/slang-emit-spirv.cpp b/source/slang/slang-emit-spirv.cpp
index b17ccf483..7352cd859 100644
--- a/source/slang/slang-emit-spirv.cpp
+++ b/source/slang/slang-emit-spirv.cpp
@@ -2344,7 +2344,7 @@ struct SPIRVEmitContext
                 builder.getType(kIROp_UIntType), builder.getIntValue(builder.getIntType(), 2));
             break;
         default:
-            break;
+            SLANG_UNEXPECTED("unhandled case in emitSpvSnippetASMTypeOperand");
         }
         emitOperand(irType);
     }