diff --git a/base/src/bufferRoutines.h b/base/src/bufferRoutines.h
index 0d8104c724b0..7c7b7668b496 100644
--- a/base/src/bufferRoutines.h
+++ b/base/src/bufferRoutines.h
@@ -57,7 +57,7 @@ inline PRUnichar GetCharAt(const char* aString,PRUint32 anIndex) {
  */
 void ShiftCharsLeft(char* aDest,PRUint32 aLength,PRUint32 anOffset,PRUint32 aCount) { 
   PRUint32 theMax=aLength-anOffset;
-  PRUint32 theLength=(theMax<aCount) ? theMax : aCount;
+//  PRUint32 theLength=(theMax<aCount) ? theMax : aCount;
 
   char* first= aDest+anOffset+aCount;
   char* last = aDest+aLength;
@@ -102,7 +102,7 @@ void ShiftCharsRight(char* aDest,PRUint32 aLength,PRUint32 anOffset,PRUint32 aCo
  */
 void ShiftDoubleCharsLeft(char* aDest,PRUint32 aLength,PRUint32 anOffset,PRUint32 aCount) { 
   PRUint32 theMax=aLength-anOffset;
-  PRUint32 theLength=(theMax<aCount) ? theMax : aCount;
+//  PRUint32 theLength=(theMax<aCount) ? theMax : aCount;
 
   PRUnichar* theBuf=(PRUnichar*)aDest;
   PRUnichar* first= theBuf+anOffset+aCount;
@@ -549,7 +549,7 @@ CaseConverters gCaseConverters[]={&ConvertCase1,&ConvertCase2};
  * @return  the new length of the given buffer
  */
 PRInt32 StripChars1(char* aString,PRUint32 anOffset,PRUint32 aCount,const char* aSet){ 
-  PRInt32 result=0;
+//  PRInt32 result=0;
 
   typedef char  chartype;
   chartype*  from = (chartype*)&aString[anOffset];
@@ -581,7 +581,7 @@ PRInt32 StripChars1(char* aString,PRUint32 anOffset,PRUint32 aCount,const char*
  * @return  the new length of the given buffer
  */
 PRInt32 StripChars2(char* aString,PRUint32 anOffset,PRUint32 aCount,const char* aSet){ 
-  PRInt32 result=0;
+//  PRInt32 result=0;
 
   typedef PRUnichar  chartype;
   chartype*  from = (chartype*)&aString[anOffset];
@@ -622,7 +622,7 @@ StripChars gStripChars[]={&StripChars1,&StripChars2};
  * @return  the new length of the given buffer
  */
 PRInt32 TrimChars1(char* aString,PRUint32 aLength,const char* aSet,PRBool aEliminateLeading,PRBool aEliminateTrailing){ 
-  PRInt32 result=0;
+//  PRInt32 result=0;
 
   typedef char  chartype;
   chartype*  from = (chartype*)aString;
@@ -745,7 +745,7 @@ TrimChars gTrimChars[]={&TrimChars1,&TrimChars2};
  * @return  the new length of the given buffer
  */
 PRInt32 CompressChars1(char* aString,PRUint32 aLength,const char* aSet,PRUint32 aChar,PRBool aEliminateLeading,PRBool aEliminateTrailing){ 
-  PRInt32 result=0;
+//  PRInt32 result=0;
 
   TrimChars1(aString,aLength,aSet,aEliminateLeading,aEliminateTrailing);
 
@@ -791,7 +791,7 @@ PRInt32 CompressChars1(char* aString,PRUint32 aLength,const char* aSet,PRUint32
  * @return  the new length of the given buffer
  */
 PRInt32 CompressChars2(char* aString,PRUint32 aLength,const char* aSet,PRUint32 aChar,PRBool aEliminateLeading,PRBool aEliminateTrailing){ 
-  PRInt32 result=0;
+//  PRInt32 result=0;
 
   TrimChars2(aString,aLength,aSet,aEliminateLeading,aEliminateTrailing);
 
diff --git a/base/src/nsString.cpp b/base/src/nsString.cpp
index ed6377962e23..ad0023ce42bd 100644
--- a/base/src/nsString.cpp
+++ b/base/src/nsString.cpp
@@ -124,7 +124,7 @@ HandleCaseConversionShutdown2::OnShutdown(const nsCID& cid, nsISupports* service
 {
     if (cid.Equals(kUnicharUtilCID)) {
         NS_ASSERTION(service == gCaseConv, "wrong service!");
-        nsrefcnt cnt = gCaseConv->Release();
+        gCaseConv->Release();
         gCaseConv = NULL;
     }
     return NS_OK;
@@ -742,7 +742,7 @@ PRInt32 nsString::ToInteger(PRInt32* aErrorCode,PRInt32 aRadix) const {
   PRUnichar*  cp = (-1==decPt) ? mStr + mLength-1 : mStr+decPt-1;
   char        digit=0;
   PRUnichar   theChar;
-  PRInt32     theShift=0;
+//  PRInt32     theShift=0;
   PRInt32     theMult=1;
 
   *aErrorCode = (0<mLength) ? NS_OK : NS_ERROR_ILLEGAL_VALUE;
diff --git a/base/src/nsString2.cpp b/base/src/nsString2.cpp
index c44bce4ee0f8..d0d8bf4a9fce 100644
--- a/base/src/nsString2.cpp
+++ b/base/src/nsString2.cpp
@@ -120,7 +120,7 @@ HandleCaseConversionShutdown3::OnShutdown(const nsCID& cid, nsISupports* service
 {
     if (cid.Equals(kUnicharUtilCID)) {
         NS_ASSERTION(service == gCaseConv, "wrong service!");
-        nsrefcnt cnt = gCaseConv->Release();
+        gCaseConv->Release();
         gCaseConv = NULL;
     }
     return NS_OK;
@@ -284,7 +284,7 @@ void nsString2::SetCapacity(PRUint32 aLength) {
  *********************************************************************/
 
 
-static char gChar=0;
+//static char gChar=0;
 
 /**
  * 
@@ -668,7 +668,7 @@ PRInt32 nsString2::ToInteger(PRInt32* anErrorCode,PRUint32 aRadix) const {
   char*     cp = (kNotFound==decPt) ? theString.mStr.mCharBuf + theString.mLength-1 : theString.mStr.mCharBuf+decPt-1;
   char      digit=0;
   char      theChar;
-  PRInt32   theShift=0;
+//  PRInt32   theShift=0;
   PRInt32   theMult=1;
 
   *anErrorCode = (0<theString.mLength) ? NS_OK : NS_ERROR_ILLEGAL_VALUE;
diff --git a/string/obsolete/nsString.cpp b/string/obsolete/nsString.cpp
index ed6377962e23..ad0023ce42bd 100644
--- a/string/obsolete/nsString.cpp
+++ b/string/obsolete/nsString.cpp
@@ -124,7 +124,7 @@ HandleCaseConversionShutdown2::OnShutdown(const nsCID& cid, nsISupports* service
 {
     if (cid.Equals(kUnicharUtilCID)) {
         NS_ASSERTION(service == gCaseConv, "wrong service!");
-        nsrefcnt cnt = gCaseConv->Release();
+        gCaseConv->Release();
         gCaseConv = NULL;
     }
     return NS_OK;
@@ -742,7 +742,7 @@ PRInt32 nsString::ToInteger(PRInt32* aErrorCode,PRInt32 aRadix) const {
   PRUnichar*  cp = (-1==decPt) ? mStr + mLength-1 : mStr+decPt-1;
   char        digit=0;
   PRUnichar   theChar;
-  PRInt32     theShift=0;
+//  PRInt32     theShift=0;
   PRInt32     theMult=1;
 
   *aErrorCode = (0<mLength) ? NS_OK : NS_ERROR_ILLEGAL_VALUE;
diff --git a/string/obsolete/nsString2.cpp b/string/obsolete/nsString2.cpp
index c44bce4ee0f8..d0d8bf4a9fce 100644
--- a/string/obsolete/nsString2.cpp
+++ b/string/obsolete/nsString2.cpp
@@ -120,7 +120,7 @@ HandleCaseConversionShutdown3::OnShutdown(const nsCID& cid, nsISupports* service
 {
     if (cid.Equals(kUnicharUtilCID)) {
         NS_ASSERTION(service == gCaseConv, "wrong service!");
-        nsrefcnt cnt = gCaseConv->Release();
+        gCaseConv->Release();
         gCaseConv = NULL;
     }
     return NS_OK;
@@ -284,7 +284,7 @@ void nsString2::SetCapacity(PRUint32 aLength) {
  *********************************************************************/
 
 
-static char gChar=0;
+//static char gChar=0;
 
 /**
  * 
@@ -668,7 +668,7 @@ PRInt32 nsString2::ToInteger(PRInt32* anErrorCode,PRUint32 aRadix) const {
   char*     cp = (kNotFound==decPt) ? theString.mStr.mCharBuf + theString.mLength-1 : theString.mStr.mCharBuf+decPt-1;
   char      digit=0;
   char      theChar;
-  PRInt32   theShift=0;
+//  PRInt32   theShift=0;
   PRInt32   theMult=1;
 
   *anErrorCode = (0<theString.mLength) ? NS_OK : NS_ERROR_ILLEGAL_VALUE;
diff --git a/xpcom/ds/bufferRoutines.h b/xpcom/ds/bufferRoutines.h
index 0d8104c724b0..7c7b7668b496 100644
--- a/xpcom/ds/bufferRoutines.h
+++ b/xpcom/ds/bufferRoutines.h
@@ -57,7 +57,7 @@ inline PRUnichar GetCharAt(const char* aString,PRUint32 anIndex) {
  */
 void ShiftCharsLeft(char* aDest,PRUint32 aLength,PRUint32 anOffset,PRUint32 aCount) { 
   PRUint32 theMax=aLength-anOffset;
-  PRUint32 theLength=(theMax<aCount) ? theMax : aCount;
+//  PRUint32 theLength=(theMax<aCount) ? theMax : aCount;
 
   char* first= aDest+anOffset+aCount;
   char* last = aDest+aLength;
@@ -102,7 +102,7 @@ void ShiftCharsRight(char* aDest,PRUint32 aLength,PRUint32 anOffset,PRUint32 aCo
  */
 void ShiftDoubleCharsLeft(char* aDest,PRUint32 aLength,PRUint32 anOffset,PRUint32 aCount) { 
   PRUint32 theMax=aLength-anOffset;
-  PRUint32 theLength=(theMax<aCount) ? theMax : aCount;
+//  PRUint32 theLength=(theMax<aCount) ? theMax : aCount;
 
   PRUnichar* theBuf=(PRUnichar*)aDest;
   PRUnichar* first= theBuf+anOffset+aCount;
@@ -549,7 +549,7 @@ CaseConverters gCaseConverters[]={&ConvertCase1,&ConvertCase2};
  * @return  the new length of the given buffer
  */
 PRInt32 StripChars1(char* aString,PRUint32 anOffset,PRUint32 aCount,const char* aSet){ 
-  PRInt32 result=0;
+//  PRInt32 result=0;
 
   typedef char  chartype;
   chartype*  from = (chartype*)&aString[anOffset];
@@ -581,7 +581,7 @@ PRInt32 StripChars1(char* aString,PRUint32 anOffset,PRUint32 aCount,const char*
  * @return  the new length of the given buffer
  */
 PRInt32 StripChars2(char* aString,PRUint32 anOffset,PRUint32 aCount,const char* aSet){ 
-  PRInt32 result=0;
+//  PRInt32 result=0;
 
   typedef PRUnichar  chartype;
   chartype*  from = (chartype*)&aString[anOffset];
@@ -622,7 +622,7 @@ StripChars gStripChars[]={&StripChars1,&StripChars2};
  * @return  the new length of the given buffer
  */
 PRInt32 TrimChars1(char* aString,PRUint32 aLength,const char* aSet,PRBool aEliminateLeading,PRBool aEliminateTrailing){ 
-  PRInt32 result=0;
+//  PRInt32 result=0;
 
   typedef char  chartype;
   chartype*  from = (chartype*)aString;
@@ -745,7 +745,7 @@ TrimChars gTrimChars[]={&TrimChars1,&TrimChars2};
  * @return  the new length of the given buffer
  */
 PRInt32 CompressChars1(char* aString,PRUint32 aLength,const char* aSet,PRUint32 aChar,PRBool aEliminateLeading,PRBool aEliminateTrailing){ 
-  PRInt32 result=0;
+//  PRInt32 result=0;
 
   TrimChars1(aString,aLength,aSet,aEliminateLeading,aEliminateTrailing);
 
@@ -791,7 +791,7 @@ PRInt32 CompressChars1(char* aString,PRUint32 aLength,const char* aSet,PRUint32
  * @return  the new length of the given buffer
  */
 PRInt32 CompressChars2(char* aString,PRUint32 aLength,const char* aSet,PRUint32 aChar,PRBool aEliminateLeading,PRBool aEliminateTrailing){ 
-  PRInt32 result=0;
+//  PRInt32 result=0;
 
   TrimChars2(aString,aLength,aSet,aEliminateLeading,aEliminateTrailing);
 
diff --git a/xpcom/ds/nsString.cpp b/xpcom/ds/nsString.cpp
index ed6377962e23..ad0023ce42bd 100644
--- a/xpcom/ds/nsString.cpp
+++ b/xpcom/ds/nsString.cpp
@@ -124,7 +124,7 @@ HandleCaseConversionShutdown2::OnShutdown(const nsCID& cid, nsISupports* service
 {
     if (cid.Equals(kUnicharUtilCID)) {
         NS_ASSERTION(service == gCaseConv, "wrong service!");
-        nsrefcnt cnt = gCaseConv->Release();
+        gCaseConv->Release();
         gCaseConv = NULL;
     }
     return NS_OK;
@@ -742,7 +742,7 @@ PRInt32 nsString::ToInteger(PRInt32* aErrorCode,PRInt32 aRadix) const {
   PRUnichar*  cp = (-1==decPt) ? mStr + mLength-1 : mStr+decPt-1;
   char        digit=0;
   PRUnichar   theChar;
-  PRInt32     theShift=0;
+//  PRInt32     theShift=0;
   PRInt32     theMult=1;
 
   *aErrorCode = (0<mLength) ? NS_OK : NS_ERROR_ILLEGAL_VALUE;
diff --git a/xpcom/ds/nsString2.cpp b/xpcom/ds/nsString2.cpp
index c44bce4ee0f8..d0d8bf4a9fce 100644
--- a/xpcom/ds/nsString2.cpp
+++ b/xpcom/ds/nsString2.cpp
@@ -120,7 +120,7 @@ HandleCaseConversionShutdown3::OnShutdown(const nsCID& cid, nsISupports* service
 {
     if (cid.Equals(kUnicharUtilCID)) {
         NS_ASSERTION(service == gCaseConv, "wrong service!");
-        nsrefcnt cnt = gCaseConv->Release();
+        gCaseConv->Release();
         gCaseConv = NULL;
     }
     return NS_OK;
@@ -284,7 +284,7 @@ void nsString2::SetCapacity(PRUint32 aLength) {
  *********************************************************************/
 
 
-static char gChar=0;
+//static char gChar=0;
 
 /**
  * 
@@ -668,7 +668,7 @@ PRInt32 nsString2::ToInteger(PRInt32* anErrorCode,PRUint32 aRadix) const {
   char*     cp = (kNotFound==decPt) ? theString.mStr.mCharBuf + theString.mLength-1 : theString.mStr.mCharBuf+decPt-1;
   char      digit=0;
   char      theChar;
-  PRInt32   theShift=0;
+//  PRInt32   theShift=0;
   PRInt32   theMult=1;
 
   *anErrorCode = (0<theString.mLength) ? NS_OK : NS_ERROR_ILLEGAL_VALUE;
diff --git a/xpcom/string/obsolete/nsString.cpp b/xpcom/string/obsolete/nsString.cpp
index ed6377962e23..ad0023ce42bd 100644
--- a/xpcom/string/obsolete/nsString.cpp
+++ b/xpcom/string/obsolete/nsString.cpp
@@ -124,7 +124,7 @@ HandleCaseConversionShutdown2::OnShutdown(const nsCID& cid, nsISupports* service
 {
     if (cid.Equals(kUnicharUtilCID)) {
         NS_ASSERTION(service == gCaseConv, "wrong service!");
-        nsrefcnt cnt = gCaseConv->Release();
+        gCaseConv->Release();
         gCaseConv = NULL;
     }
     return NS_OK;
@@ -742,7 +742,7 @@ PRInt32 nsString::ToInteger(PRInt32* aErrorCode,PRInt32 aRadix) const {
   PRUnichar*  cp = (-1==decPt) ? mStr + mLength-1 : mStr+decPt-1;
   char        digit=0;
   PRUnichar   theChar;
-  PRInt32     theShift=0;
+//  PRInt32     theShift=0;
   PRInt32     theMult=1;
 
   *aErrorCode = (0<mLength) ? NS_OK : NS_ERROR_ILLEGAL_VALUE;
diff --git a/xpcom/string/obsolete/nsString2.cpp b/xpcom/string/obsolete/nsString2.cpp
index c44bce4ee0f8..d0d8bf4a9fce 100644
--- a/xpcom/string/obsolete/nsString2.cpp
+++ b/xpcom/string/obsolete/nsString2.cpp
@@ -120,7 +120,7 @@ HandleCaseConversionShutdown3::OnShutdown(const nsCID& cid, nsISupports* service
 {
     if (cid.Equals(kUnicharUtilCID)) {
         NS_ASSERTION(service == gCaseConv, "wrong service!");
-        nsrefcnt cnt = gCaseConv->Release();
+        gCaseConv->Release();
         gCaseConv = NULL;
     }
     return NS_OK;
@@ -284,7 +284,7 @@ void nsString2::SetCapacity(PRUint32 aLength) {
  *********************************************************************/
 
 
-static char gChar=0;
+//static char gChar=0;
 
 /**
  * 
@@ -668,7 +668,7 @@ PRInt32 nsString2::ToInteger(PRInt32* anErrorCode,PRUint32 aRadix) const {
   char*     cp = (kNotFound==decPt) ? theString.mStr.mCharBuf + theString.mLength-1 : theString.mStr.mCharBuf+decPt-1;
   char      digit=0;
   char      theChar;
-  PRInt32   theShift=0;
+//  PRInt32   theShift=0;
   PRInt32   theMult=1;
 
   *anErrorCode = (0<theString.mLength) ? NS_OK : NS_ERROR_ILLEGAL_VALUE;