[lldb] Add llvm_unreachable in RichManglingContext

Add `llvm_unreachable` to prevent warnings/errors in gcc and msvc.

Differential Revision: https://reviews.llvm.org/D119737

diff --git a/lldb/source/Core/RichManglingContext.cpp b/lldb/source/Core/RichManglingContext.cpp
index f1e81be..64b18b4 100644 (file)
--- a/lldb/source/Core/RichManglingContext.cpp
+++ b/lldb/source/Core/RichManglingContext.cpp
@@ -123,6 +123,7 @@ llvm::StringRef RichManglingContext::ParseFunctionBaseName() {
   case None:
     return {};
   }
+  llvm_unreachable("Fully covered switch above!");
 }
 
 llvm::StringRef RichManglingContext::ParseFunctionDeclContextName() {
@@ -139,6 +140,7 @@ llvm::StringRef RichManglingContext::ParseFunctionDeclContextName() {
   case None:
     return {};
   }
+  llvm_unreachable("Fully covered switch above!");
 }
 
 llvm::StringRef RichManglingContext::ParseFullName() {
@@ -156,4 +158,5 @@ llvm::StringRef RichManglingContext::ParseFullName() {
   case None:
     return {};
   }
+  llvm_unreachable("Fully covered switch above!");
 }