Create msvs_large_pdb workaround.

test/win/gyptest-link-large-pdb.py

+#!/usr/bin/env python
+
+# Copyright (c) 2013 Google Inc. All rights reserved.
+# Use of this source code is governed by a BSD-style license that can be
+# found in the LICENSE file.
+
+"""
+Make sure msvs_large_pdb works correctly.
+"""
+
+import TestGyp
+
+import struct
+import sys
+
+
+CHDIR = 'large-pdb'
+
+
+def CheckExeAndPdb(test, target_name, expected_page_size):
+  exe_basename = target_name + '.exe'
+  pdb_basename = exe_basename + '.pdb'
+  test.built_file_must_exist(exe_basename, chdir=CHDIR)
+  test.built_file_must_exist(pdb_basename, chdir=CHDIR)
+
+  # We expect the PDB to have the given page size. For full details of the
+  # header look here: https://code.google.com/p/pdbparser/wiki/MSF_Format
+  # We read the little-endian 4-byte unsigned integer at position 32 of the
+  # file.
+  pdb_path = test.built_file_path(pdb_basename, chdir=CHDIR)
+  pdb_file = open(pdb_path, 'rb')
+  pdb_file.seek(32, 0)
+  page_size = struct.unpack('<I', pdb_file.read(4))[0]
+  if page_size != expected_page_size:
+    print "Expected page size of %d, got %d for PDB file `%s'." % (
+        expected_page_size, page_size, pdb_path)
+
+
+if sys.platform == 'win32':
+  test = TestGyp.TestGyp(formats=['msvs', 'ninja'])
+
+  test.run_gyp('large-pdb.gyp', chdir=CHDIR)
+  test.build('large-pdb.gyp', test.ALL, chdir=CHDIR)
+
+  CheckExeAndPdb(test, 'large_pdb', 4096)
+  CheckExeAndPdb(test, 'small_pdb', 1024)
+
+  test.pass_test()