1 /*=============================================================================
2     Boost.Wave: A Standard compliant C++ preprocessor library
3     http://www.boost.org/
4 
5     Copyright (c) 2001-2012 Hartmut Kaiser. Distributed under the Boost
6     Software License, Version 1.0. (See accompanying file
7     LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
8 =============================================================================*/
9 
10 // Tests, whether an empty macro prevents another macro from expansion
11 
12 #define EMPTY()
13 #define SCAN(x) x
14 #define MACRO(x) (x)
15 
16 //R #line 17 "t_1_030.cpp"
17 SCAN( MACRO EMPTY() )(1)    //R (1)
18 
19 //H 10: t_1_030.cpp(12): #define
20 //H 08: t_1_030.cpp(12): EMPTY()=
21 //H 10: t_1_030.cpp(13): #define
22 //H 08: t_1_030.cpp(13): SCAN(x)=x
23 //H 10: t_1_030.cpp(14): #define
24 //H 08: t_1_030.cpp(14): MACRO(x)=(x)
25 //H 00: t_1_030.cpp(17): SCAN( MACRO EMPTY() ), [t_1_030.cpp(13): SCAN(x)=x]
26 //H 00: t_1_030.cpp(17): EMPTY(), [t_1_030.cpp(12): EMPTY()=]
27 //H 02:
28 //H 03: _
29 //H 02:  MACRO
30 //H 03: MACRO
31 //H 00: t_1_030.cpp(17): MACRO(1), [t_1_030.cpp(14): MACRO(x)=(x)]
32 //H 02: (1)
33 //H 03: (1)
34