[llvm] r327274 - [DebugInfo] Replace unreachable with None

[Jonas Devlieghere via llvm-commits]

Author: jdevlieghere
Date: Mon Mar 12 07:45:08 2018
New Revision: 327274

URL: http://llvm.org/viewvc/llvm-project?rev=327274&view=rev
Log:
[DebugInfo] Replace unreachable with None

Invalid user input should not trigger assertions and unreachables. We
already return an Option so we should just return None here.

Fixes https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=5532

Modified:
    llvm/trunk/lib/DebugInfo/DWARF/DWARFFormValue.cpp

Modified: llvm/trunk/lib/DebugInfo/DWARF/DWARFFormValue.cpp
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/DebugInfo/DWARF/DWARFFormValue.cpp?rev=327274&r1=327273&r2=327274&view=diff
==============================================================================
--- llvm/trunk/lib/DebugInfo/DWARF/DWARFFormValue.cpp (original)
+++ llvm/trunk/lib/DebugInfo/DWARF/DWARFFormValue.cpp Mon Mar 12 07:45:08 2018
@@ -161,7 +161,7 @@ DWARFFormValue::getFixedByteSize(dwarf::
     return 0;
 
   default:
-    llvm_unreachable("Handle this form in this switch statement");
+    break;
   }
   return None;
 }