Fix parsing of object numbers > 16,777,216.

core/src/fxcrt/fx_basic_gcc_unittest.cpp

+// Copyright 2016 PDFium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#include "core/include/fxcrt/fx_system.h"
+#include "testing/gtest/include/gtest/gtest.h"
+
+TEST(fxcrt, FXSYS_atoi) {
+  EXPECT_EQ(0, FXSYS_atoi(""));
+  EXPECT_EQ(0, FXSYS_atoi("0"));
+  EXPECT_EQ(-1, FXSYS_atoi("-1"));
+  EXPECT_EQ(2345, FXSYS_atoi("2345"));
+  EXPECT_EQ(2147483647, FXSYS_atoi("2147483647"));
+  EXPECT_EQ(-2147483647, FXSYS_atoi("-2147483647"));
+  EXPECT_EQ(9, FXSYS_atoi("9x9"));
+
+  // TODO(dsinclair): These are all wacky .....
+  EXPECT_EQ(2147483623, FXSYS_atoi("2147483623423412348"));
+  EXPECT_EQ(214748364, FXSYS_atoi("2147483648"));
+  // The digit is parsed as a positive value, so we end up not being able to
+  // handle the largest possible negative value.
+  EXPECT_EQ(-214748364, FXSYS_atoi("-2147483648"));
+}
+
+TEST(fxcrt, FXSYS_atoi64) {
+  EXPECT_EQ(0, FXSYS_atoi64(""));
+  EXPECT_EQ(0, FXSYS_atoi64("0"));
+  EXPECT_EQ(-1, FXSYS_atoi64("-1"));
+  EXPECT_EQ(2345, FXSYS_atoi64("2345"));
+  EXPECT_EQ(9223372036854775807LL, FXSYS_atoi64("9223372036854775807"));
+  EXPECT_EQ(-9223372036854775807LL, FXSYS_atoi64("-9223372036854775807"));
+  EXPECT_EQ(9, FXSYS_atoi64("9x9"));
+
+  // TODO(dsinclair): These are all wacky .....
+  EXPECT_EQ(9223372036854712341LL, FXSYS_atoi64("922337203685471234123475807"));
+  EXPECT_EQ(922337203685477580LL, FXSYS_atoi64("9223372036854775808"));
+  // The digit is parsed as a positive value, so we end up not being able to
+  // handle the largest possible negative value.
+  EXPECT_EQ(-922337203685477580LL, FXSYS_atoi64("-9223372036854775808"));
+}
+
+TEST(fxcrt, FXSYS_wtoi) {
+  EXPECT_EQ(0, FXSYS_wtoi(L""));
+  EXPECT_EQ(0, FXSYS_wtoi(L"0"));
+  EXPECT_EQ(-1, FXSYS_wtoi(L"-1"));
+  EXPECT_EQ(2345, FXSYS_wtoi(L"2345"));
+  EXPECT_EQ(2147483647, FXSYS_wtoi(L"2147483647"));
+  EXPECT_EQ(-2147483647, FXSYS_wtoi(L"-2147483647"));
+  EXPECT_EQ(9, FXSYS_wtoi64(L"9x9"));
+
+  // TODO(dsinclair): These are all wacky .....
+  EXPECT_EQ(2147483623, FXSYS_wtoi(L"2147483623423412348"));
+  EXPECT_EQ(214748364, FXSYS_wtoi(L"2147483648"));
+  // The digit is parsed as a positive value, so we end up not being able to
+  // handle the largest possible negative value.
+  EXPECT_EQ(-214748364, FXSYS_wtoi(L"-2147483648"));
+}
+
+TEST(fxcrt, FXSYS_wtoi64) {
+  EXPECT_EQ(0, FXSYS_wtoi64(L""));
+  EXPECT_EQ(0, FXSYS_wtoi64(L"0"));
+  EXPECT_EQ(-1, FXSYS_wtoi64(L"-1"));
+  EXPECT_EQ(2345, FXSYS_wtoi64(L"2345"));
+  EXPECT_EQ(9223372036854775807LL, FXSYS_wtoi64(L"9223372036854775807"));
+  EXPECT_EQ(-9223372036854775807LL, FXSYS_wtoi64(L"-9223372036854775807"));
+  EXPECT_EQ(9, FXSYS_wtoi64(L"9x9"));
+
+  // TODO(dsinclair): These are all wacky .....
+  EXPECT_EQ(9223372036854712341LL,
+            FXSYS_wtoi64(L"922337203685471234123475807"));
+  EXPECT_EQ(922337203685477580LL, FXSYS_wtoi64(L"9223372036854775808"));
+  // The digit is parsed as a positive value, so we end up not being able to
+  // handle the largest possible negative value.
+  EXPECT_EQ(-922337203685477580LL, FXSYS_wtoi64(L"-9223372036854775808"));
+}
+
+TEST(fxcrt, FXSYS_atoui) {
+  EXPECT_EQ(0, FXSYS_atoui(""));
+  EXPECT_EQ(0, FXSYS_atoui("0"));
+  EXPECT_EQ(0, FXSYS_atoui("-1"));
+  EXPECT_EQ(2345, FXSYS_atoui("2345"));
+  EXPECT_EQ(4294967295, FXSYS_atoui("4294967295"));
+  EXPECT_EQ(9, FXSYS_atoui("9x9"));
+
+  // TODO(dsinclair): These are all wacky .....
+  EXPECT_EQ(2147483623, FXSYS_atoi("2147483623423412348"));
+  EXPECT_EQ(429496729, FXSYS_atoi("4294967296"));
+}