Use ExitProcess on Windows.

runtime/platform/globals.h

 // Copyright (c) 2012, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
 #ifndef PLATFORM_GLOBALS_H_
 #define PLATFORM_GLOBALS_H_
 
 // __STDC_FORMAT_MACROS has to be defined before including <inttypes.h> to
 // enable platform independent printf format specifiers.
 #ifndef __STDC_FORMAT_MACROS
@@ skipping 215 matching lines @@
 #endif
 
 // DART_UNUSED inidicates to the compiler that a variable/typedef is expected
 // to be unused and disables the related warning.
 #ifdef __GNUC__
 #define DART_UNUSED __attribute__((unused))
 #else
 #define DART_UNUSED
 #endif
 
+#ifdef _MSC_VER
+#define DART_NORETURN __declspec(noreturn)
+#elif __GNUC__
+#define DART_NORETURN __attribute__((noreturn))

[Ivan Posva, 2015/10/29 23:14:09]

Why?

[zra, 2015/10/30 06:09:46]

exit() is marked as not returning. If we don't mark functions wrapping exit() as
not returning as well, then the compiler won't know that execution can't
continue past them, and we'll get errors for using uninitialized variables,
etc.. This happens in main() for example.

+#else
+#error Automatic compiler detection failed.
+#endif
+
 #if !defined(TARGET_ARCH_MIPS)
 #if !defined(TARGET_ARCH_ARM)
 #if !defined(TARGET_ARCH_X64)
 #if !defined(TARGET_ARCH_IA32)
 #if !defined(TARGET_ARCH_ARM64)
 // No target architecture specified pick the one matching the host architecture.
 #if defined(HOST_ARCH_MIPS)
 #define TARGET_ARCH_MIPS 1
 #elif defined(HOST_ARCH_ARM)
 #define TARGET_ARCH_ARM 1
@@ skipping 356 matching lines @@
 
 #if defined(_WIN32)
 #define STDIN_FILENO 0
 #define STDOUT_FILENO 1
 #define STDERR_FILENO 2
 #endif
 
 }  // namespace dart
 
 #endif  // PLATFORM_GLOBALS_H_