diff --git a/clang/Basic/SourceBuffer.cpp b/clang/Basic/SourceBuffer.cpp
index d2c0ad2c4c5d..47a945db6d16 100644
--- a/clang/Basic/SourceBuffer.cpp
+++ b/clang/Basic/SourceBuffer.cpp
@@ -131,6 +131,7 @@ SourceBufferMMapFile::SourceBufferMMapFile(const sys::Path &Filename) {
   // FIXME: This does an extra stat syscall to figure out the size, but we
   // already know the size!
   bool Failure = File.open(Filename);
+  Failure = Failure;  // Silence warning in no-asserts mode.
   assert(!Failure && "Can't open file??");
   
   File.map();
diff --git a/clang/Lex/Preprocessor.cpp b/clang/Lex/Preprocessor.cpp
index 09fa7c1f550b..4a57a0fd6312 100644
--- a/clang/Lex/Preprocessor.cpp
+++ b/clang/Lex/Preprocessor.cpp
@@ -1238,6 +1238,7 @@ void Preprocessor::SkipExcludedConditionalBlock(SourceLocation IfTokenLoc,
         PPConditionalInfo CondInfo;
         CondInfo.WasSkipping = true; // Silence bogus warning.
         bool InCond = CurLexer->popConditionalLevel(CondInfo);
+        InCond = InCond;  // Silence warning in no-asserts mode.
         assert(!InCond && "Can't be skipping if not in a conditional!");
         
         // If we popped the outermost skipping block, we're done skipping!