--- a/netwerk/base/public/Makefile.in
+++ b/netwerk/base/public/Makefile.in
@@ -2,16 +2,17 @@
 # This Source Code Form is subject to the terms of the Mozilla Public
 # License, v. 2.0. If a copy of the MPL was not distributed with this
 # file, You can obtain one at http://mozilla.org/MPL/2.0/.
 
 DEPTH		= @DEPTH@
 topsrcdir	= @top_srcdir@
 srcdir		= @srcdir@
 VPATH		= @srcdir@
+FAIL_ON_WARNINGS := 1
 
 include $(DEPTH)/config/autoconf.mk
 
 MODULE		= necko
 GRE_MODULE	= 1
 
 SDK_XPIDLSRCS   = \
 		nsIChannel.idl \

--- a/netwerk/base/src/Makefile.in
+++ b/netwerk/base/src/Makefile.in
@@ -3,16 +3,17 @@
 # This Source Code Form is subject to the terms of the Mozilla Public
 # License, v. 2.0. If a copy of the MPL was not distributed with this
 # file, You can obtain one at http://mozilla.org/MPL/2.0/.
 
 DEPTH		= @DEPTH@
 topsrcdir	= @top_srcdir@
 srcdir		= @srcdir@
 VPATH		= @srcdir@
+FAIL_ON_WARNINGS := 1
 
 include $(DEPTH)/config/autoconf.mk
 
 MODULE		= necko
 LIBRARY_NAME	= neckobase_s
 LIBXUL_LIBRARY  = 1
 
 EXPORTS = \

--- a/netwerk/base/src/nsFileStreams.cpp
+++ b/netwerk/base/src/nsFileStreams.cpp
@@ -595,28 +595,28 @@ nsPartialFileInputStream::Init(nsIFile* 
     NS_ENSURE_SUCCESS(rv, rv);
     
     return nsFileInputStream::Seek(NS_SEEK_SET, mStart);
 }
 
 NS_IMETHODIMP
 nsPartialFileInputStream::Tell(int64_t *aResult)
 {
-    int64_t tell;
+    int64_t tell = 0;
     nsresult rv = nsFileInputStream::Tell(&tell);
     if (NS_SUCCEEDED(rv)) {
         *aResult = tell - mStart;
     }
     return rv;
 }
 
 NS_IMETHODIMP
 nsPartialFileInputStream::Available(uint64_t* aResult)
 {
-    uint64_t available;
+    uint64_t available = 0;
     nsresult rv = nsFileInputStream::Available(&available);
     if (NS_SUCCEEDED(rv)) {
         *aResult = TruncateSize(available);
     }
     return rv;
 }
 
 NS_IMETHODIMP
@@ -975,9 +975,9 @@ nsFileStream::GetLastModified(int64_t* _
     }
     else {
         *_retval = modTime / int64_t(PR_USEC_PER_MSEC);
     }
 
     return NS_OK;
 }
 
-////////////////////////////////////////////////////////////////////////////////
\ No newline at end of file
+////////////////////////////////////////////////////////////////////////////////

--- a/netwerk/base/src/nsFileStreams.h
+++ b/netwerk/base/src/nsFileStreams.h
@@ -174,16 +174,17 @@ protected:
 
 ////////////////////////////////////////////////////////////////////////////////
 
 class nsPartialFileInputStream : public nsFileInputStream,
                                  public nsIPartialFileInputStream
 {
 public:
     using nsFileInputStream::Init;
+    using nsFileInputStream::Read;
     NS_DECL_ISUPPORTS_INHERITED
     NS_DECL_NSIPARTIALFILEINPUTSTREAM
     NS_DECL_NSIIPCSERIALIZABLEINPUTSTREAM
 
     nsPartialFileInputStream()
       : mStart(0), mLength(0), mPosition(0)
     { }
 

--- a/netwerk/base/src/nsURLParsers.cpp
+++ b/netwerk/base/src/nsURLParsers.cpp
@@ -466,17 +466,19 @@ nsAuthURLParser::ParseAuthority(const ch
         SET_RESULT(hostname, 0, 0);
         if (port)
             *port = -1;
         return NS_OK;
     }
 
     // search backwards for @
     const char *p = auth + authLen - 1;
-    for (; (*p != '@') && (p > auth); --p);
+    for (; (*p != '@') && (p > auth); --p) {
+      continue;
+    }
     if ( *p == '@' ) {
         // auth = <user-info@server-info>
         rv = ParseUserInfo(auth, p - auth,
                            usernamePos, usernameLen,
                            passwordPos, passwordLen);
         if (NS_FAILED(rv)) return rv;
         rv = ParseServerInfo(p + 1, authLen - (p - auth + 1),
                              hostnamePos, hostnameLen,

--- a/netwerk/build/Makefile.in
+++ b/netwerk/build/Makefile.in
@@ -2,16 +2,17 @@
 # This Source Code Form is subject to the terms of the Mozilla Public
 # License, v. 2.0. If a copy of the MPL was not distributed with this
 # file, You can obtain one at http://mozilla.org/MPL/2.0/.
 
 DEPTH     = @DEPTH@
 topsrcdir = @top_srcdir@
 srcdir    = @srcdir@
 VPATH     = @srcdir@
+FAIL_ON_WARNINGS := 1
 
 include $(DEPTH)/config/autoconf.mk
 
 MODULE         = necko
 LIBRARY_NAME   = necko
 EXPORT_LIBRARY = 1
 IS_COMPONENT   = 1
 MODULE_NAME    = necko

--- a/netwerk/cache/nsCacheService.cpp
+++ b/netwerk/cache/nsCacheService.cpp
@@ -2517,20 +2517,19 @@ nsCacheService::SetMemoryCache()
  * static methods for nsCacheEntryDescriptor
  *****************************************************************************/
 void
 nsCacheService::CloseDescriptor(nsCacheEntryDescriptor * descriptor)
 {
     // ask entry to remove descriptor
     nsCacheEntry * entry       = descriptor->CacheEntry();
     bool           stillActive = entry->RemoveDescriptor(descriptor);
-    nsresult       rv          = NS_OK;
 
     if (!entry->IsValid()) {
-        rv = gService->ProcessPendingRequests(entry);
+        gService->ProcessPendingRequests(entry);
     }
 
     if (!stillActive) {
         gService->DeactivateEntry(entry);
     }
 }
 
 

--- a/netwerk/cache/nsDiskCacheBinding.cpp
+++ b/netwerk/cache/nsDiskCacheBinding.cpp
@@ -197,19 +197,22 @@ nsDiskCacheBindery::CreateBinding(nsCach
  *  FindActiveEntry :  to find active colliding entry so we can doom it
  */
 nsDiskCacheBinding *
 nsDiskCacheBindery::FindActiveBinding(uint32_t  hashNumber)
 {
     NS_ASSERTION(initialized, "nsDiskCacheBindery not initialized");
     // find hash entry for key
     HashTableEntry * hashEntry;
-    hashEntry = (HashTableEntry *) PL_DHashTableOperate(&table, (void*) hashNumber, PL_DHASH_LOOKUP);
+    hashEntry =
+      (HashTableEntry *) PL_DHashTableOperate(&table,
+                                              (void*)(uintptr_t) hashNumber,
+                                              PL_DHASH_LOOKUP);
     if (PL_DHASH_ENTRY_IS_FREE(hashEntry)) return nullptr;
-    
+
     // walk list looking for active entry
     NS_ASSERTION(hashEntry->mBinding, "hash entry left with no binding");
     nsDiskCacheBinding * binding = hashEntry->mBinding;    
     while (binding->mCacheEntry->IsDoomed()) {
         binding = (nsDiskCacheBinding *)PR_NEXT_LINK(binding);
         if (binding == hashEntry->mBinding)  return nullptr;
     }
     return binding;
@@ -229,19 +232,20 @@ nsDiskCacheBindery::FindActiveBinding(ui
 nsresult
 nsDiskCacheBindery::AddBinding(nsDiskCacheBinding * binding)
 {
     NS_ENSURE_ARG_POINTER(binding);
     NS_ASSERTION(initialized, "nsDiskCacheBindery not initialized");
 
     // find hash entry for key
     HashTableEntry * hashEntry;
-    hashEntry = (HashTableEntry *) PL_DHashTableOperate(&table,
-                                                        (void*) binding->mRecord.HashNumber(),
-                                                        PL_DHASH_ADD);
+    hashEntry = (HashTableEntry *)
+      PL_DHashTableOperate(&table,
+                           (void *)(uintptr_t) binding->mRecord.HashNumber(),
+                           PL_DHASH_ADD);
     if (!hashEntry) return NS_ERROR_OUT_OF_MEMORY;
     
     if (hashEntry->mBinding == nullptr) {
         hashEntry->mBinding = binding;
         if (binding->mGeneration == 0)
             binding->mGeneration = 1;   // if generation uninitialized, set it to 1
             
         return NS_OK;
@@ -291,32 +295,32 @@ nsDiskCacheBindery::AddBinding(nsDiskCac
  */
 void
 nsDiskCacheBindery::RemoveBinding(nsDiskCacheBinding * binding)
 {
     NS_ASSERTION(initialized, "nsDiskCacheBindery not initialized");
     if (!initialized)   return;
     
     HashTableEntry * hashEntry;
-    void *           key = (void *)binding->mRecord.HashNumber();
+    void           * key = (void *)(uintptr_t)binding->mRecord.HashNumber();
 
     hashEntry = (HashTableEntry*) PL_DHashTableOperate(&table,
-                                                       (void*) key,
+                                                       (void*)(uintptr_t) key,
                                                        PL_DHASH_LOOKUP);
     if (!PL_DHASH_ENTRY_IS_BUSY(hashEntry)) {
         NS_WARNING("### disk cache: binding not in hashtable!");
         return;
     }
     
     if (binding == hashEntry->mBinding) {
         if (PR_CLIST_IS_EMPTY(binding)) {
             // remove this hash entry
-            (void) PL_DHashTableOperate(&table,
-                                        (void*) binding->mRecord.HashNumber(),
-                                        PL_DHASH_REMOVE);
+            PL_DHashTableOperate(&table,
+                                 (void*)(uintptr_t) binding->mRecord.HashNumber(),
+                                 PL_DHASH_REMOVE);
             return;
             
         } else {
             // promote next binding to head, and unlink this binding
             hashEntry->mBinding = (nsDiskCacheBinding *)PR_NEXT_LINK(binding);
         }
     }
     PR_REMOVE_AND_INIT_LINK(binding);

--- a/netwerk/cache/nsDiskCacheStreams.cpp
+++ b/netwerk/cache/nsDiskCacheStreams.cpp
@@ -130,21 +130,20 @@ nsDiskCacheInputStream::Read(char * buff
     
     if (count > mStreamEnd - mPos)
         count = mStreamEnd - mPos;
 
     if (mFD) {
         // just read from file
         int32_t  result = PR_Read(mFD, buffer, count);
         if (result < 0) {
-            PRErrorCode error = PR_GetError();
             nsresult rv = NS_ErrorAccordingToNSPR();
             CACHE_LOG_DEBUG(("CACHE: nsDiskCacheInputStream::Read PR_Read failed"
                              "[stream=%p, rv=%d, NSPR error %s",
-                             this, int(rv), PR_ErrorToName(error)));
+                             this, int(rv), PR_ErrorToName(PR_GetError())));
             return rv;
         }
         
         mPos += (uint32_t)result;
         *bytesRead = (uint32_t)result;
         
     } else if (mBuffer) {
         // read data from mBuffer

--- a/netwerk/cookie/Makefile.in
+++ b/netwerk/cookie/Makefile.in
@@ -3,16 +3,17 @@
 # License, v. 2.0. If a copy of the MPL was not distributed with this
 # file, You can obtain one at http://mozilla.org/MPL/2.0/.
 
 DEPTH     = @DEPTH@
 topsrcdir = @top_srcdir@
 srcdir    = @srcdir@
 VPATH     = @srcdir@
 relativesrcdir = @relativesrcdir@
+FAIL_ON_WARNINGS := 1
 
 include $(DEPTH)/config/autoconf.mk
 
 # export required interfaces, even if --disable-cookies has been given
 MODULE       = necko
 XPIDL_MODULE = necko_cookie
 GRE_MODULE   = 1
 

--- a/netwerk/cookie/nsCookieService.cpp
+++ b/netwerk/cookie/nsCookieService.cpp
@@ -2824,37 +2824,40 @@ nsCookieService::GetTokenValue(nsASingle
     ++aIter;
   start = aIter;
   while (aIter != aEndIter && !istokenseparator(*aIter))
     ++aIter;
 
   // remove trailing <LWS>; first check we're not at the beginning
   lastSpace = aIter;
   if (lastSpace != start) {
-    while (--lastSpace != start && iswhitespace(*lastSpace));
+    while (--lastSpace != start && iswhitespace(*lastSpace))
+      continue;
     ++lastSpace;
   }
   aTokenString.Rebind(start, lastSpace);
 
   aEqualsFound = (*aIter == '=');
   if (aEqualsFound) {
     // find <value>
-    while (++aIter != aEndIter && iswhitespace(*aIter));
+    while (++aIter != aEndIter && iswhitespace(*aIter))
+      continue;
 
     start = aIter;
 
     // process <token>
     // just look for ';' to terminate ('=' allowed)
     while (aIter != aEndIter && !isvalueseparator(*aIter))
       ++aIter;
 
     // remove trailing <LWS>; first check we're not at the beginning
     if (aIter != start) {
       lastSpace = aIter;
-      while (--lastSpace != start && iswhitespace(*lastSpace));
+      while (--lastSpace != start && iswhitespace(*lastSpace))
+        continue;
       aTokenValue.Rebind(start, ++lastSpace);
     }
   }
 
   // aIter is on ';', or terminator, or EOS
   if (aIter != aEndIter) {
     // if on terminator, increment past & return true to process new cookie
     if (isterminator(*aIter)) {

--- a/netwerk/dns/Makefile.in
+++ b/netwerk/dns/Makefile.in
@@ -2,16 +2,17 @@
 # This Source Code Form is subject to the terms of the Mozilla Public
 # License, v. 2.0. If a copy of the MPL was not distributed with this
 # file, You can obtain one at http://mozilla.org/MPL/2.0/.
 
 DEPTH     = @DEPTH@
 topsrcdir = @top_srcdir@
 srcdir    = @srcdir@
 VPATH     = @srcdir@
+FAIL_ON_WARNINGS := 1
 
 include $(DEPTH)/config/autoconf.mk
 
 MODULE         = necko
 LIBRARY_NAME   = neckodns_s
 LIBXUL_LIBRARY = 1
 XPIDL_MODULE   = necko_dns
 GRE_MODULE     = 1

--- a/netwerk/ipc/Makefile.in
+++ b/netwerk/ipc/Makefile.in
@@ -1,16 +1,17 @@
 # This Source Code Form is subject to the terms of the Mozilla Public
 # License, v. 2.0. If a copy of the MPL was not distributed with this
 # file, You can obtain one at http://mozilla.org/MPL/2.0/.
 
 DEPTH = @DEPTH@
 topsrcdir = @top_srcdir@
 srcdir = @srcdir@
 VPATH = @srcdir@
+FAIL_ON_WARNINGS := 1
 
 include $(DEPTH)/config/autoconf.mk
 
 MODULE = necko
 
 LIBRARY_NAME = neckoipc_s
 LIBXUL_LIBRARY = 1
 FORCE_STATIC_LIB = 1

--- a/netwerk/mime/Makefile.in
+++ b/netwerk/mime/Makefile.in
@@ -2,16 +2,17 @@
 # This Source Code Form is subject to the terms of the Mozilla Public
 # License, v. 2.0. If a copy of the MPL was not distributed with this
 # file, You can obtain one at http://mozilla.org/MPL/2.0/.
 
 DEPTH     = @DEPTH@
 topsrcdir = @top_srcdir@
 srcdir    = @srcdir@
 VPATH     = @srcdir@
+FAIL_ON_WARNINGS := 1
 
 include $(DEPTH)/config/autoconf.mk
 
 MODULE         = mimetype
 LIBRARY_NAME   = nkmime_s
 LIBXUL_LIBRARY = 1
 
 FORCE_STATIC_LIB = 1

--- a/netwerk/mime/nsMIMEHeaderParamImpl.cpp
+++ b/netwerk/mime/nsMIMEHeaderParamImpl.cpp
@@ -788,17 +788,17 @@ nsMIMEHeaderParamImpl::DecodeRFC5987Para
   const char *c = encoded;
 
   while (*c) {
     char tc = *c++;
 
     if (tc == '\'') {
       // single quote
       delimiters++;
-    } else if (tc >= 128) {
+    } else if (((unsigned char)tc) >= 128) {
       // fail early, not ASCII
       NS_WARNING("non-US-ASCII character in RFC5987-encoded param");
       return NS_ERROR_INVALID_ARG;
     } else {
       if (delimiters == 0) {
         // valid characters are checked later implicitly
         charset.Append(tc);
       } else if (delimiters == 1) {

--- a/netwerk/protocol/about/Makefile.in
+++ b/netwerk/protocol/about/Makefile.in
@@ -2,16 +2,17 @@
 # This Source Code Form is subject to the terms of the Mozilla Public
 # License, v. 2.0. If a copy of the MPL was not distributed with this
 # file, You can obtain one at http://mozilla.org/MPL/2.0/.
 
 DEPTH     = @DEPTH@
 topsrcdir = @top_srcdir@
 srcdir    = @srcdir@
 VPATH     = @srcdir@
+FAIL_ON_WARNINGS := 1
 
 include $(DEPTH)/config/autoconf.mk
 
 MODULE         = necko
 LIBRARY_NAME   = nkabout_s
 LIBXUL_LIBRARY = 1
 XPIDL_MODULE   = necko_about
 GRE_MODULE     = 1

--- a/netwerk/protocol/about/nsAboutBlank.cpp
+++ b/netwerk/protocol/about/nsAboutBlank.cpp
@@ -10,29 +10,28 @@
 #include "nsNetUtil.h"
 
 NS_IMPL_ISUPPORTS1(nsAboutBlank, nsIAboutModule)
 
 NS_IMETHODIMP
 nsAboutBlank::NewChannel(nsIURI *aURI, nsIChannel **result)
 {
     NS_ENSURE_ARG_POINTER(aURI);
-    nsresult rv;
-    nsIChannel* channel;
 
     nsCOMPtr<nsIInputStream> in;
-    rv = NS_NewCStringInputStream(getter_AddRefs(in), EmptyCString());
+    nsresult rv = NS_NewCStringInputStream(getter_AddRefs(in), EmptyCString());
     if (NS_FAILED(rv)) return rv;
 
-    rv = NS_NewInputStreamChannel(&channel, aURI, in,
+    nsCOMPtr<nsIChannel> channel;
+    rv = NS_NewInputStreamChannel(getter_AddRefs(channel), aURI, in,
                                   NS_LITERAL_CSTRING("text/html"),
                                   NS_LITERAL_CSTRING("utf-8"));
     if (NS_FAILED(rv)) return rv;
 
-    *result = channel;
+    channel.forget(result);
     return rv;
 }
 
 NS_IMETHODIMP
 nsAboutBlank::GetURIFlags(nsIURI *aURI, uint32_t *result)
 {
     *result = nsIAboutModule::URI_SAFE_FOR_UNTRUSTED_CONTENT |
               nsIAboutModule::HIDE_FROM_ABOUTABOUT;

--- a/netwerk/protocol/about/nsAboutCache.cpp
+++ b/netwerk/protocol/about/nsAboutCache.cpp
@@ -101,23 +101,23 @@ nsAboutCache::NewChannel(nsIURI *aURI, n
                           "</html>\n");
     outputStream->Write(mBuffer.get(), mBuffer.Length(), &bytesWritten);
 
     nsCOMPtr<nsIInputStream> inStr;
 
     rv = storageStream->NewInputStream(0, getter_AddRefs(inStr));
     if (NS_FAILED(rv)) return rv;
 
-    nsIChannel* channel;
-    rv = NS_NewInputStreamChannel(&channel, aURI, inStr,
+    nsCOMPtr<nsIChannel> channel;
+    rv = NS_NewInputStreamChannel(getter_AddRefs(channel), aURI, inStr,
                                   NS_LITERAL_CSTRING("text/html"),
                                   NS_LITERAL_CSTRING("utf-8"));
     if (NS_FAILED(rv)) return rv;
 
-    *result = channel;
+    channel.forget(result);
     return rv;
 }
 
 NS_IMETHODIMP
 nsAboutCache::GetURIFlags(nsIURI *aURI, uint32_t *result)
 {
     *result = 0;
     return NS_OK;

--- a/netwerk/protocol/http/Makefile.in
+++ b/netwerk/protocol/http/Makefile.in
@@ -2,16 +2,17 @@
 # This Source Code Form is subject to the terms of the Mozilla Public
 # License, v. 2.0. If a copy of the MPL was not distributed with this
 # file, You can obtain one at http://mozilla.org/MPL/2.0/.
 
 DEPTH     = @DEPTH@
 topsrcdir = @top_srcdir@
 srcdir    = @srcdir@
 VPATH     = @srcdir@
+FAIL_ON_WARNINGS := 1
 
 include $(DEPTH)/config/autoconf.mk
 
 MODULE         = necko
 LIBRARY_NAME   = nkhttp_s
 LIBXUL_LIBRARY = 1
 XPIDL_MODULE   = necko_http
 GRE_MODULE     = 1

--- a/netwerk/protocol/http/nsHttpConnectionMgr.cpp
+++ b/netwerk/protocol/http/nsHttpConnectionMgr.cpp
@@ -386,17 +386,18 @@ nsHttpConnectionMgr::CompleteUpgrade(nsA
         delete data;
     return rv;
 }
     
 nsresult
 nsHttpConnectionMgr::UpdateParam(nsParamName name, uint16_t value)
 {
     uint32_t param = (uint32_t(name) << 16) | uint32_t(value);
-    return PostEvent(&nsHttpConnectionMgr::OnMsgUpdateParam, 0, (void *) param);
+    return PostEvent(&nsHttpConnectionMgr::OnMsgUpdateParam, 0,
+                     (void *)(uintptr_t) param);
 }
 
 nsresult
 nsHttpConnectionMgr::ProcessPendingQ(nsHttpConnectionInfo *ci)
 {
     LOG(("nsHttpConnectionMgr::ProcessPendingQ [ci=%s]\n", ci->HashKey().get()));
 
     NS_ADDREF(ci);
@@ -948,17 +949,17 @@ nsHttpConnectionMgr::ProcessPendingQForE
             count = ent->mPendingQ.Length();
             --i;
             continue;
         }
 
         if (dispatchedSuccessfully)
             return true;
 
-        NS_ABORT_IF_FALSE(count == ((int32_t) ent->mPendingQ.Length()),
+        NS_ABORT_IF_FALSE(count == ent->mPendingQ.Length(),
                           "something mutated pending queue from "
                           "GetConnection()");
     }
     return false;
 }
 
 bool
 nsHttpConnectionMgr::ProcessPendingQForEntry(nsHttpConnectionInfo *ci)

--- a/netwerk/protocol/http/nsHttpHeaderArray.cpp
+++ b/netwerk/protocol/http/nsHttpHeaderArray.cpp
@@ -43,19 +43,18 @@ nsHttpHeaderArray::SetHeader(nsHttpAtom 
 
     return NS_OK;
 }
 
 nsresult
 nsHttpHeaderArray::SetHeaderFromNet(nsHttpAtom header, const nsACString &value)
 {
     nsEntry *entry = nullptr;
-    int32_t index;
 
-    index = LookupEntry(header, &entry);
+    LookupEntry(header, &entry);
 
     if (!entry) {
         if (value.IsEmpty()) {
             if (!TrackEmptyHeader(header)) {
                 LOG(("Ignoring Empty Header: %s\n", header.get()));
                 return NS_OK; // ignore empty headers by default
             }
         }

--- a/netwerk/protocol/http/nsHttpPipeline.h
+++ b/netwerk/protocol/http/nsHttpPipeline.h
@@ -68,17 +68,16 @@ private:
     bool mClosed;
 
     // indicates whether or not a true pipeline (more than 1 request without
     // a synchronous response) has been formed.
     bool mUtilizedPipeline;
 
     // used when calling ReadSegments/WriteSegments on a transaction.
     nsAHttpSegmentReader *mReader;
-    nsAHttpSegmentWriter *mWriter;
 
     // send buffer
     nsCOMPtr<nsIInputStream>  mSendBufIn;
     nsCOMPtr<nsIOutputStream> mSendBufOut;
 
     // the push back buffer.  not exceeding nsIOService::gDefaultSegmentSize bytes.
     char     *mPushBackBuf;
     uint32_t  mPushBackLen;

--- a/netwerk/socket/Makefile.in
+++ b/netwerk/socket/Makefile.in
@@ -2,16 +2,17 @@
 # This Source Code Form is subject to the terms of the Mozilla Public
 # License, v. 2.0. If a copy of the MPL was not distributed with this
 # file, You can obtain one at http://mozilla.org/MPL/2.0/.
 
 DEPTH     = @DEPTH@
 topsrcdir = @top_srcdir@
 srcdir    = @srcdir@
 VPATH     = @srcdir@
+FAIL_ON_WARNINGS := 1
 
 include $(DEPTH)/config/autoconf.mk
 
 MODULE         = necko
 XPIDL_MODULE   = necko_socket
 LIBRARY_NAME   = neckosocket_s
 LIBXUL_LIBRARY = 1
 

--- a/netwerk/socket/nsSOCKSIOLayer.cpp
+++ b/netwerk/socket/nsSOCKSIOLayer.cpp
@@ -1,11 +1,11 @@
-/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*-
- *
- * This Source Code Form is subject to the terms of the Mozilla Public
+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
+/* vim:set expandtab ts=4 sw=4 sts=4 cin: */
+/* This Source Code Form is subject to the terms of the Mozilla Public
  * License, v. 2.0. If a copy of the MPL was not distributed with this
  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
 
 #include "nspr.h"
 #include "private/pprio.h"
 #include "nsString.h"
 #include "nsCRT.h"
 
@@ -929,17 +929,17 @@ nsSOCKSSocketInfo::ReadUint32()
     memcpy(&rv, mData + mReadOffset, sizeof(rv));
     mReadOffset += sizeof(rv);
     return rv;
 }
 
 void
 nsSOCKSSocketInfo::ReadNetAddr(PRNetAddr *addr, uint16_t fam)
 {
-    uint32_t amt;
+    uint32_t amt = 0;
     const uint8_t *ip = mData + mReadOffset;
 
     addr->raw.family = fam;
     if (fam == PR_AF_INET) {
         amt = sizeof(addr->inet.ip);
         NS_ABORT_IF_FALSE(mReadOffset + amt <= mDataLength,
                           "Not enough space to pop an ipv4 addr!");
         memcpy(&addr->inet.ip, ip, amt);

--- a/netwerk/streamconv/converters/Makefile.in
+++ b/netwerk/streamconv/converters/Makefile.in
@@ -2,16 +2,17 @@
 # This Source Code Form is subject to the terms of the Mozilla Public
 # License, v. 2.0. If a copy of the MPL was not distributed with this
 # file, You can obtain one at http://mozilla.org/MPL/2.0/.
 
 DEPTH		= @DEPTH@
 topsrcdir	= @top_srcdir@
 srcdir		= @srcdir@
 VPATH		= @srcdir@
+FAIL_ON_WARNINGS := 1
 
 include $(DEPTH)/config/autoconf.mk
 
 MODULE		= necko
 LIBRARY_NAME	= nkcnvts_s
 LIBXUL_LIBRARY = 1
 
 

--- a/netwerk/streamconv/converters/ParseFTPList.cpp
+++ b/netwerk/streamconv/converters/ParseFTPList.cpp
@@ -26,21 +26,16 @@ int ParseFTPList(const char *line, struc
   unsigned int carry_buf_len; /* copy of state->carry_buf_len */
   unsigned int linelen, pos;
   const char *p;
 
   if (!line || !state || !result)
     return 0;
 
   memset( result, 0, sizeof(*result) );
-  if (state->magic != ((void *)ParseFTPList))
-  {
-    memset( state, 0, sizeof(*state) );
-    state->magic = ((void *)ParseFTPList);
-  }
   state->numlines++;
 
   /* carry buffer is only valid from one line to the next */
   carry_buf_len = state->carry_buf_len;
   state->carry_buf_len = 0;
 
   linelen = 0;
 

--- a/netwerk/streamconv/converters/ParseFTPList.h
+++ b/netwerk/streamconv/converters/ParseFTPList.h
@@ -60,17 +60,20 @@
 #define SUPPORT_DOS  /* WinNT server in 'site dirstyle' dos */
 #define SUPPORT_VMS  /* VMS (all: MultiNet, UCX, CMU-IP) */
 #define SUPPORT_CMS  /* IBM VM/CMS,VM/ESA (z/VM and LISTING forms) */
 #define SUPPORT_OS2  /* IBM TCP/IP for OS/2 - FTP Server */
 #define SUPPORT_W16  /* win16 hosts: SuperTCP or NetManage Chameleon */
 
 struct list_state
 {
-  void           *magic;        /* to determine if previously initialized */
+  list_state() {
+    memset(this, 0, sizeof(*this));
+  }
+
   PRTime         now_time;      /* needed for year determination */
   PRExplodedTime now_tm;        /* needed for year determination */
   int32_t        lstyle;        /* LISTing style */
   int32_t        parsed_one;    /* returned anything yet? */
   char           carry_buf[84]; /* for VMS multiline */
   uint32_t       carry_buf_len; /* length of name in carry_buf */
   uint32_t       numlines;      /* number of lines seen */
 };

--- a/netwerk/streamconv/converters/nsFTPDirListingConv.cpp
+++ b/netwerk/streamconv/converters/nsFTPDirListingConv.cpp
@@ -247,17 +247,16 @@ nsFTPDirListingConv::GetHeaders(nsACStri
 
 char *
 nsFTPDirListingConv::DigestBufferLines(char *aBuffer, nsCString &aString) {
     char *line = aBuffer;
     char *eol;
     bool cr = false;
 
     list_state state;
-    state.magic = 0;
 
     // while we have new lines, parse 'em into application/http-index-format.
     while ( line && (eol = PL_strchr(line, nsCRT::LF)) ) {
         // yank any carriage returns too.
         if (eol > line && *(eol-1) == nsCRT::CR) {
             eol--;
             *eol = '\0';
             cr = true;

--- a/netwerk/streamconv/converters/nsUnknownDecoder.cpp
+++ b/netwerk/streamconv/converters/nsUnknownDecoder.cpp
@@ -311,18 +311,18 @@ void nsUnknownDecoder::DetermineContentT
   // magic numbers
   uint32_t i;
   for (i = 0; i < sSnifferEntryNum; ++i) {
     if (mBufferLen >= sSnifferEntries[i].mByteLen &&  // enough data
         memcmp(mBuffer, sSnifferEntries[i].mBytes, sSnifferEntries[i].mByteLen) == 0) {  // and type matches
       NS_ASSERTION(sSnifferEntries[i].mMimeType ||
                    sSnifferEntries[i].mContentTypeSniffer,
                    "Must have either a type string or a function to set the type");
-      NS_ASSERTION(sSnifferEntries[i].mMimeType == nullptr ||
-                   sSnifferEntries[i].mContentTypeSniffer == nullptr,
+      NS_ASSERTION(!sSnifferEntries[i].mMimeType ||
+                   !sSnifferEntries[i].mContentTypeSniffer,
                    "Both a type string and a type sniffing function set;"
                    " using type string");
       if (sSnifferEntries[i].mMimeType) {
         mContentType = sSnifferEntries[i].mMimeType;
         NS_ASSERTION(!mContentType.IsEmpty(), 
                      "Content type should be known by now.");
         return;
       }
@@ -544,17 +544,19 @@ bool nsUnknownDecoder::LastDitchSniff(ns
       return true;
     }
   }
   
   // Now see whether the buffer has any non-text chars.  If not, then let's
   // just call it text/plain...
   //
   uint32_t i;
-  for (i=0; i<mBufferLen && IS_TEXT_CHAR(mBuffer[i]); i++);
+  for (i = 0; i < mBufferLen && IS_TEXT_CHAR(mBuffer[i]); i++) {
+    continue;
+  }
 
   if (i == mBufferLen) {
     mContentType = TEXT_PLAIN;
   }
   else {
     mContentType = APPLICATION_OCTET_STREAM;
   }
 

--- a/netwerk/streamconv/public/Makefile.in
+++ b/netwerk/streamconv/public/Makefile.in
@@ -2,16 +2,17 @@
 # This Source Code Form is subject to the terms of the Mozilla Public
 # License, v. 2.0. If a copy of the MPL was not distributed with this
 # file, You can obtain one at http://mozilla.org/MPL/2.0/.
 
 DEPTH		= @DEPTH@
 topsrcdir	= @top_srcdir@
 srcdir		= @srcdir@
 VPATH		= @srcdir@
+FAIL_ON_WARNINGS := 1
 
 include $(DEPTH)/config/autoconf.mk
 
 MODULE		= necko
 XPIDL_MODULE	= necko_strconv
 GRE_MODULE	= 1
 
 XPIDLSRCS	= \

--- a/netwerk/streamconv/src/Makefile.in
+++ b/netwerk/streamconv/src/Makefile.in
@@ -9,16 +9,22 @@ srcdir		= @srcdir@
 VPATH		= @srcdir@
 
 include $(DEPTH)/config/autoconf.mk
 
 MODULE		= necko
 LIBRARY_NAME	= nkconv_s
 LIBXUL_LIBRARY  = 1
 
+ifneq (cocoa,$(MOZ_WIDGET_TOOLKIT))
+ifeq (x86_64,$(OS_TEST))
+# nsAppleFileDecoder.cpp has warnings I don't understand.
+FAIL_ON_WARNINGS := 1
+endif
+endif
 
 CPPSRCS		= \
 		nsStreamConverterService.cpp \
 		$(NULL)
 
 ifeq (cocoa,$(MOZ_WIDGET_TOOLKIT))
 ifneq (x86_64,$(OS_TEST))
 CPPSRCS += \

--- a/netwerk/streamconv/test/Makefile.in
+++ b/netwerk/streamconv/test/Makefile.in
@@ -2,23 +2,23 @@
 # This Source Code Form is subject to the terms of the Mozilla Public
 # License, v. 2.0. If a copy of the MPL was not distributed with this
 # file, You can obtain one at http://mozilla.org/MPL/2.0/.
 
 DEPTH		= @DEPTH@
 topsrcdir	= @top_srcdir@
 srcdir		= @srcdir@
 VPATH		= @srcdir@
+FAIL_ON_WARNINGS := 1
 
 include $(DEPTH)/config/autoconf.mk
 
 MODULE		= TestStreamConv
 PROGRAM		= TestStreamConv$(BIN_SUFFIX)
 
-
 CPPSRCS		= \
 		Converters.cpp \
 		TestStreamConv.cpp \
 		$(NULL)
 
 LIBS		= \
 		$(DIST)/lib/$(LIB_PREFIX)xpcomglue_s.$(LIB_SUFFIX) \
 		$(XPCOM_LIBS) \

--- a/netwerk/system/android/Makefile.in
+++ b/netwerk/system/android/Makefile.in
@@ -1,23 +1,23 @@
 # This Source Code Form is subject to the terms of the Mozilla Public
 # License, v. 2.0. If a copy of the MPL was not distributed with this
 # file, You can obtain one at http://mozilla.org/MPL/2.0/.
 
 DEPTH		= @DEPTH@
 topsrcdir	= @top_srcdir@
 srcdir		= @srcdir@
 VPATH		= @srcdir@
+FAIL_ON_WARNINGS := 1
 
 include $(DEPTH)/config/autoconf.mk
 
 MODULE	       = necko
 LIBRARY_NAME   = neckosystem_s
 LIBXUL_LIBRARY = 1
-FAIL_ON_WARNINGS = 1
 
 FORCE_STATIC_LIB = 1
 
 CPPSRCS += \
 	nsAndroidNetworkLinkService.cpp \
 	$(NULL)
 
 include $(topsrcdir)/config/rules.mk

--- a/netwerk/system/mac/Makefile.in
+++ b/netwerk/system/mac/Makefile.in
@@ -2,16 +2,17 @@
 # This Source Code Form is subject to the terms of the Mozilla Public
 # License, v. 2.0. If a copy of the MPL was not distributed with this
 # file, You can obtain one at http://mozilla.org/MPL/2.0/.
 
 DEPTH		= @DEPTH@
 topsrcdir	= @top_srcdir@
 srcdir		= @srcdir@
 VPATH		= @srcdir@
+FAIL_ON_WARNINGS := 1
 
 include $(DEPTH)/config/autoconf.mk
 
 MODULE         = necko
 LIBRARY_NAME   = neckosystem_s
 LIBXUL_LIBRARY = 1
 
 FORCE_STATIC_LIB = 1

--- a/netwerk/system/maemo/Makefile.in
+++ b/netwerk/system/maemo/Makefile.in
@@ -1,16 +1,17 @@
 # This Source Code Form is subject to the terms of the Mozilla Public
 # License, v. 2.0. If a copy of the MPL was not distributed with this
 # file, You can obtain one at http://mozilla.org/MPL/2.0/.
 
 DEPTH		= @DEPTH@
 topsrcdir	= @top_srcdir@
 srcdir		= @srcdir@
 VPATH		= @srcdir@
+FAIL_ON_WARNINGS := 1
 
 include $(DEPTH)/config/autoconf.mk
 
 MODULE	       = necko
 LIBRARY_NAME   = neckosystem_s
 LIBXUL_LIBRARY = 1
 
 FORCE_STATIC_LIB = 1

--- a/netwerk/system/qt/Makefile.in
+++ b/netwerk/system/qt/Makefile.in
@@ -2,16 +2,17 @@
 # This Source Code Form is subject to the terms of the Mozilla Public
 # License, v. 2.0. If a copy of the MPL was not distributed with this
 # file, You can obtain one at http://mozilla.org/MPL/2.0/.
 
 DEPTH		= @DEPTH@
 topsrcdir	= @top_srcdir@
 srcdir	 = @srcdir@
 VPATH		= @srcdir@
+FAIL_ON_WARNINGS := 1
 
 include $(DEPTH)/config/autoconf.mk
 
 MODULE         = necko
 LIBRARY_NAME   = neckosystem_s
 LIBXUL_LIBRARY = 1
 
 FORCE_STATIC_LIB = 1

--- a/netwerk/system/win32/Makefile.in
+++ b/netwerk/system/win32/Makefile.in
@@ -2,16 +2,17 @@
 # This Source Code Form is subject to the terms of the Mozilla Public
 # License, v. 2.0. If a copy of the MPL was not distributed with this
 # file, You can obtain one at http://mozilla.org/MPL/2.0/.
 
 DEPTH		= @DEPTH@
 topsrcdir	= @top_srcdir@
 srcdir		= @srcdir@
 VPATH		= @srcdir@
+FAIL_ON_WARNINGS := 1
 
 include $(DEPTH)/config/autoconf.mk
 
 MODULE	       = necko
 LIBRARY_NAME   = neckosystem_s
 LIBXUL_LIBRARY = 1
 
 FORCE_STATIC_LIB = 1

--- a/netwerk/test/Makefile.in
+++ b/netwerk/test/Makefile.in
@@ -4,16 +4,17 @@
 # License, v. 2.0. If a copy of the MPL was not distributed with this
 # file, You can obtain one at http://mozilla.org/MPL/2.0/.
 
 DEPTH		= @DEPTH@
 topsrcdir	= @top_srcdir@
 srcdir		= @srcdir@
 VPATH		= @srcdir@
 relativesrcdir = @relativesrcdir@
+FAIL_ON_WARNINGS := 1
 
 include $(DEPTH)/config/autoconf.mk
 
 MODULE		= test_necko
 
 DIRS            = \
                   httpserver \
                   browser \

--- a/netwerk/test/TestProtocols.cpp
+++ b/netwerk/test/TestProtocols.cpp
@@ -1,10 +1,10 @@
-/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
-/* vim: set ts=4 sw=4 et cindent: */
+/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim: set ts=2 sw=2 et cindent: */
 /* This Source Code Form is subject to the terms of the Mozilla Public
  * License, v. 2.0. If a copy of the MPL was not distributed with this
  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
 
 /* 
     The TestProtocols tests the basic protocols architecture and can 
     be used to test individual protocols as well. If this grows too
     big then we should split it to individual protocols. 
@@ -373,18 +373,19 @@ NS_IMETHODIMP
 InputTestConsumer::OnStartRequest(nsIRequest *request, nsISupports* context)
 {
   LOG(("InputTestConsumer::OnStartRequest\n"));
 
   URLLoadInfo* info = (URLLoadInfo*)context;
   if (info)
     info->mConnectTime = PR_Now() - info->mConnectTime;
 
-  if (gVerbose)
+  if (gVerbose) {
     LOG(("\nStarted loading: %s\n", info ? info->Name() : "UNKNOWN URL"));
+  }
 
   nsCAutoString value;
 
   nsCOMPtr<nsIChannel> channel = do_QueryInterface(request);
   if (channel) {
     nsresult status;
     channel->GetStatus(&status);
     LOG(("Channel Status: %08x\n", status));
@@ -396,20 +397,21 @@ InputTestConsumer::OnStartRequest(nsIReq
 
       channel->GetContentType(value);
       LOG(("\tContent-Type: %s\n", value.get()));
 
       channel->GetContentCharset(value);
       LOG(("\tContent-Charset: %s\n", value.get()));
 
       int32_t length = -1;
-      if (NS_SUCCEEDED(channel->GetContentLength(&length)))
+      if (NS_SUCCEEDED(channel->GetContentLength(&length))) {
         LOG(("\tContent-Length: %d\n", length));
-      else
+      } else {
         LOG(("\tContent-Length: Unknown\n"));
+      }
     }
 
     nsCOMPtr<nsISupports> owner;
     channel->GetOwner(getter_AddRefs(owner));
     LOG(("\tChannel Owner: %x\n", owner.get()));
   }
 
   nsCOMPtr<nsIPropertyBag2> props = do_QueryInterface(request);
@@ -425,26 +427,28 @@ InputTestConsumer::OnStartRequest(nsIReq
       }
   }
 
   nsCOMPtr<nsIPropertyBag2> propbag = do_QueryInterface(request);
   if (propbag) {
       int64_t len;
       nsresult rv = propbag->GetPropertyAsInt64(NS_CHANNEL_PROP_CONTENT_LENGTH,
                                                 &len);
-      if (NS_SUCCEEDED(rv))
+      if (NS_SUCCEEDED(rv)) {
           LOG(("\t64-bit length: %lli\n", len));
+      }
   }
 
   nsCOMPtr<nsIHttpChannelInternal> httpChannelInt(do_QueryInterface(request));
   if (httpChannelInt) {
       uint32_t majorVer, minorVer;
       nsresult rv = httpChannelInt->GetResponseVersion(&majorVer, &minorVer);
-      if (NS_SUCCEEDED(rv))
+      if (NS_SUCCEEDED(rv)) {
           LOG(("HTTP Response version: %u.%u\n", majorVer, minorVer));
+      }
   }
   nsCOMPtr<nsIHttpChannel> httpChannel(do_QueryInterface(request));
   if (httpChannel) {
     HeaderVisitor *visitor = new HeaderVisitor();
     if (!visitor)
       return NS_ERROR_OUT_OF_MEMORY;
     NS_ADDREF(visitor);
 
@@ -528,22 +532,23 @@ InputTestConsumer::OnStopRequest(nsIRequ
 
     nsCOMPtr<nsIHttpChannel> pHTTPCon(do_QueryInterface(request));
     if (pHTTPCon) {
         pHTTPCon->GetResponseStatus(&httpStatus);
         bHTTPURL = true;
     }
 
     LOG(("\nFinished loading: %s  Status Code: %x\n", info->Name(), aStatus));
-    if (bHTTPURL)
-        LOG(("\tHTTP Status: %u\n", httpStatus));
-     if (NS_ERROR_UNKNOWN_HOST == aStatus ||
-         NS_ERROR_UNKNOWN_PROXY_HOST == aStatus) {
-         LOG(("\tDNS lookup failed.\n"));
-     }
+    if (bHTTPURL) {
+      LOG(("\tHTTP Status: %u\n", httpStatus));
+    }
+    if (NS_ERROR_UNKNOWN_HOST == aStatus ||
+        NS_ERROR_UNKNOWN_PROXY_HOST == aStatus) {
+      LOG(("\tDNS lookup failed.\n"));
+    }
     LOG(("\tTime to connect: %.3f seconds\n", connectTime));
     LOG(("\tTime to read: %.3f seconds.\n", readTime));
     LOG(("\tRead: %lld bytes.\n", info->mBytesRead));
     if (info->mBytesRead == int64_t(0)) {
     } else if (readTime > 0.0) {
       LOG(("\tThroughput: %.0f bps.\n", (double)(info->mBytesRead*int64_t(8))/readTime));
     } else {
       LOG(("\tThroughput: REAL FAST!!\n"));
@@ -641,18 +646,19 @@ nsresult StartLoadingURL(const char* aUr
         nsCOMPtr<nsITimedChannel> timed(do_QueryInterface(pChannel));
         if (timed)
             timed->SetTimingEnabled(true);
 
         nsCOMPtr<nsIWritablePropertyBag2> props = do_QueryInterface(pChannel);
         if (props) {
             rv = props->SetPropertyAsInterface(NS_LITERAL_STRING("test.foo"),
                                                pURL);
-            if (NS_SUCCEEDED(rv))
+            if (NS_SUCCEEDED(rv)) {
                 LOG(("set prop 'test.foo'\n"));
+            }
         }
 
         /* 
            You may optionally add/set other headers on this
            request object. This is done by QI for the specific
            protocolConnection.
         */
         nsCOMPtr<nsIHttpChannel> pHTTPCon(do_QueryInterface(pChannel));

--- a/netwerk/wifi/Makefile.in
+++ b/netwerk/wifi/Makefile.in
@@ -12,16 +12,21 @@ include $(DEPTH)/config/autoconf.mk
 MODULE         = necko
 LIBRARY_NAME   = neckowifi_s
 LIBXUL_LIBRARY = 1
 XPIDL_MODULE   = necko_wifi
 GRE_MODULE     = 1
 
 FORCE_STATIC_LIB = 1
 
+ifneq ($(OS_ARCH),Darwin)
+# osx_corewlan.mm has warnings I don't understand.
+FAIL_ON_WARNINGS := 1
+endif
+
 XPIDLSRCS = \
   nsIWifiAccessPoint.idl \
   nsIWifiListener.idl \
   nsIWifiMonitor.idl \
   $(NULL)
 
 CPPSRCS = \
   nsWifiMonitor.cpp \

--- a/netwerk/wifi/nsWifiScannerUnix.cpp
+++ b/netwerk/wifi/nsWifiScannerUnix.cpp
@@ -28,17 +28,17 @@ typedef  int (*iw_stats_t)(int skfd,
 			   const char *ifname,
 			   iwstats *stats,
 			   const iwrange *range,
 			   int has_range);
 
 static int scan_wifi(int skfd, char* ifname, char* args[], int count)
 {
   nsCOMArray<nsWifiAccessPoint>* accessPoints = (nsCOMArray<nsWifiAccessPoint>*) args[0];
-  iw_stats_t iw_stats = (iw_stats_t) args[1];
+  iw_stats_t iw_stats = (iw_stats_t) (uintptr_t) args[1];
 
   struct iwreq wrq;
 
   int result = iw_get_ext(skfd, ifname, SIOCGIWMODE, &wrq);
   if (result < 0)
     return 0;
 
   // We only cared about "Managed" mode.  2 is the magic number.  There isn't a #define for this.
@@ -104,25 +104,25 @@ nsWifiMonitor::DoScan()
     }
   }
   else {
     LOG(("Loaded libiw\n"));
   }
 
   static iw_open_t iw_open = NULL;
   if (!iw_open)
-    iw_open = (iw_open_t) dlsym(iwlib_handle, "iw_sockets_open");
+    iw_open = (iw_open_t) (uintptr_t) dlsym(iwlib_handle, "iw_sockets_open");
 
   static iw_enum_t iw_enum = NULL;
   if (!iw_enum)
-    iw_enum = (iw_enum_t) dlsym(iwlib_handle, "iw_enum_devices");
+    iw_enum = (iw_enum_t) (uintptr_t) dlsym(iwlib_handle, "iw_enum_devices");
 
   static iw_stats_t iw_stats = NULL;
   if (!iw_stats)
-    iw_stats = (iw_stats_t)dlsym(iwlib_handle, "iw_get_stats");
+    iw_stats = (iw_stats_t) (uintptr_t) dlsym(iwlib_handle, "iw_get_stats");
 
   if (!iw_open || !iw_enum || !iw_stats) {
     LOG(("Could not load a symbol from iwlib.so\n"));
     return NS_ERROR_FAILURE;
   }
 
   int skfd = (*iw_open)();
 
@@ -135,17 +135,17 @@ nsWifiMonitor::DoScan()
     int skfd;
     SocketsGuard(int skfd) : skfd(skfd) {}
     ~SocketsGuard() { iw_sockets_close(skfd); }
   } guard(skfd);
 
   nsCOMArray<nsWifiAccessPoint> lastAccessPoints;
   nsCOMArray<nsWifiAccessPoint> accessPoints;
 
-  char* args[] = {(char*) &accessPoints, (char*) iw_stats, nullptr };
+  char* args[] = {(char*) &accessPoints, (char*) (uintptr_t) iw_stats, nullptr };
 
   while (mKeepGoing) {
     accessPoints.Clear();
 
     (*iw_enum)(skfd, &scan_wifi, args, 1);
 
     bool accessPointsChanged = !AccessPointsEqual(accessPoints, lastAccessPoints);
     ReplaceArray(lastAccessPoints, accessPoints);