[llvm] r297990 - Silence -Wcovered-switch-default warning.

[Zachary Turner via llvm-commits]

Author: zturner
Date: Thu Mar 16 15:45:11 2017
New Revision: 297990

URL: http://llvm.org/viewvc/llvm-project?rev=297990&view=rev
Log:
Silence -Wcovered-switch-default warning.

Modified:
    llvm/trunk/lib/DebugInfo/PDB/Native/InfoStream.cpp

Modified: llvm/trunk/lib/DebugInfo/PDB/Native/InfoStream.cpp
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/DebugInfo/PDB/Native/InfoStream.cpp?rev=297990&r1=297989&r2=297990&view=diff
==============================================================================
--- llvm/trunk/lib/DebugInfo/PDB/Native/InfoStream.cpp (original)
+++ llvm/trunk/lib/DebugInfo/PDB/Native/InfoStream.cpp Thu Mar 16 15:45:11 2017
@@ -62,18 +62,22 @@ Error InfoStream::reload() {
     PdbRaw_FeatureSig Sig;
     if (auto EC = Reader.readEnum(Sig))
       return EC;
-    switch (Sig) {
-    case PdbRaw_FeatureSig::VC110:
+    // Since this value comes from a file, it's possible we have some strange
+    // value which doesn't correspond to any value.  We don't want to warn on
+    // -Wcovered-switch-default in this case, so switch on the integral value
+    // instead of the enumeration value.
+    switch (uint32_t(Sig)) {
+    case uint32_t(PdbRaw_FeatureSig::VC110):
       // No other flags for VC110 PDB.
       Stop = true;
       LLVM_FALLTHROUGH;
-    case PdbRaw_FeatureSig::VC140:
+    case uint32_t(PdbRaw_FeatureSig::VC140):
       Features |= PdbFeatureContainsIdStream;
       break;
-    case PdbRaw_FeatureSig::NoTypeMerge:
+    case uint32_t(PdbRaw_FeatureSig::NoTypeMerge):
       Features |= PdbFeatureNoTypeMerging;
       break;
-    case PdbRaw_FeatureSig::MinimalDebugInfo:
+    case uint32_t(PdbRaw_FeatureSig::MinimalDebugInfo):
       Features |= PdbFeatureMinimalDebugInfo;
     default:
       continue;