Change all self assignments X=X to (void)X, so that we can turn on a

new gcc warning that complains on self-assignments and
self-initializations.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122458 91177308-0d34-0410-b5e6-96231b3b80d8

2 files changed, 2 insertions, 3 deletions

diff --git a/lib/Support/PrettyStackTrace.cpp b/lib/Support/PrettyStackTrace.cpp
index cd7c097d35..a9f4709e4b 100644
--- a/lib/Support/PrettyStackTrace.cpp
+++ b/lib/Support/PrettyStackTrace.cpp
@@ -107,7 +107,7 @@ static bool RegisterCrashPrinter() {
 PrettyStackTraceEntry::PrettyStackTraceEntry() {
   // The first time this is called, we register the crash printer.
   static bool HandlerRegistered = RegisterCrashPrinter();
-  HandlerRegistered = HandlerRegistered;
+  (void)HandlerRegistered;
     
   // Link ourselves.
   NextEntry = PrettyStackTraceHead.get();
@@ -131,4 +131,3 @@ void PrettyStackTraceProgram::print(raw_ostream &OS) const {
     OS << ArgV[i] << ' ';
   OS << '\n';
 }
-
diff --git a/lib/Support/StringMap.cpp b/lib/Support/StringMap.cpp
index 6f28277890..90ec299502 100644
--- a/lib/Support/StringMap.cpp
+++ b/lib/Support/StringMap.cpp
@@ -155,7 +155,7 @@ int StringMapImpl::FindKey(StringRef Key) const {
 void StringMapImpl::RemoveKey(StringMapEntryBase *V) {
   const char *VStr = (char*)V + ItemSize;
   StringMapEntryBase *V2 = RemoveKey(StringRef(VStr, V->getKeyLength()));
-  V2 = V2;
+  (void)V2;
   assert(V == V2 && "Didn't find key?");
 }