Test warning suppression with VS 2015

build/config/compiler/BUILD.gn

 # Copyright (c) 2013 The Chromium Authors. All rights reserved.
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
 import("//build/config/android/config.gni")
 import("//build/config/chrome_build.gni")
 import("//build/config/compiler/compiler.gni")
 import("//build/config/nacl/config.gni")
 import("//build/toolchain/cc_wrapper.gni")
 
@@ skipping 765 matching lines @@
       cflags += [
         # VC++ 2015 changes 32-bit size_t truncation warnings from 4244 to 4267.
         # Example: short TruncTest(size_t x) { return x; }
         # Since we disable 4244 we need to disable 4267 during migration.
         # TODO(jschuh): crbug.com/167187 fix size_t to int truncations.
         "/wd4267",
 
         # C4312 is a VS 2015 64-bit warning for integer to larger pointer.
         # TODO(brucedawson): fix warnings, crbug.com/554200
         "/wd4312",
+
+        # TODO(brucedawson): http://crbug.com/593448 4334 is a 'suspicious
+        # shift' warning and 4595 is an 'illegal inline operator new' warning
+        # Both are new in VS 2015 Update 2 and can safely be deferred for now.
+        "/wd4334",
+        "/wd4595",
       ]
     }
 
     # VS xtree header file needs to be patched or 4702 (unreachable code
     # warning) is reported if _HAS_EXCEPTIONS=0. Disable the warning if xtree is
     # not patched.
     if (!msvs_xtree_patched &&
         exec_script("../../win_is_xtree_patched.py", [], "value") == 0) {
       cflags += [ "/wd4702" ]  # Unreachable code.
     }
@@ skipping 526 matching lines @@
   if (symbol_level == 0) {
     configs = [ ":no_symbols" ]
   } else if (symbol_level == 1) {
     configs = [ ":minimal_symbols" ]
   } else if (symbol_level == 2) {
     configs = [ ":symbols" ]
   } else {
     assert(false)
   }
 }