1/* Clang supports a very limited subset of -traditional-cpp, basically we only
2 * intend to add support for things that people actually rely on when doing
3 * things like using /usr/bin/cpp to preprocess non-source files. */
4
5/*
6 RUN: %clang_cc1 -traditional-cpp %s -E | FileCheck -strict-whitespace %s
7 RUN: %clang_cc1 -traditional-cpp %s -E -C | FileCheck -check-prefix=CHECK-COMMENTS %s
8 RUN: %clang_cc1 -traditional-cpp -x c++ %s -E | FileCheck -check-prefix=CHECK-CXX %s
9*/
10
11/* -traditional-cpp should eliminate all C89 comments. */
12/* CHECK-NOT: /*
13 * CHECK-COMMENTS: {{^}}/* -traditional-cpp should eliminate all C89 comments. *{{/$}}
14 */
15
16/* -traditional-cpp should only eliminate "//" comments in C++ mode. */
17/* CHECK: {{^}}foo // bar{{$}}
18 * CHECK-CXX: {{^}}foo {{$}}
19 */
20foo // bar
21
22
23/* The lines in this file contain hard tab characters and trailing whitespace;
24 * do not change them! */
25
26/* CHECK: {{^}}	indented!{{$}}
27 * CHECK: {{^}}tab	separated	values{{$}}
28 */
29	indented!
30tab	separated	values
31
32#define bracket(x) >>>x<<<
33bracket(|  spaces  |)
34/* CHECK: {{^}}>>>|  spaces  |<<<{{$}}
35 */
36
37/* This is still a preprocessing directive. */
38# define foo bar
39foo!
40-
41	foo!	foo!
42/* CHECK: {{^}}bar!{{$}}
43 * CHECK: {{^}}	bar!	bar!	{{$}}
44 */
45
46/* Deliberately check a leading newline with spaces on that line. */
47
48# define foo bar
49foo!
50-
51	foo!	foo!
52/* CHECK: {{^}}bar!{{$}}
53 * CHECK: {{^}}	bar!	bar!	{{$}}
54 */
55
56/* FIXME: -traditional-cpp should not consider this a preprocessing directive
57 * because the # isn't in the first column.
58 */
59 #define foo2 bar
60foo2!
61/* If this were working, both of these checks would be on.
62 * CHECK-NOT: {{^}} #define foo2 bar{{$}}
63 * CHECK-NOT: {{^}}foo2!{{$}}
64 */
65
66/* FIXME: -traditional-cpp should not homogenize whitespace in macros.
67 */
68#define bracket2(x) >>>  x  <<<
69bracket2(spaces)
70/* If this were working, this check would be on.
71 * CHECK-NOT: {{^}}>>>  spaces  <<<{{$}}
72 */
73
74
75/* Check that #if 0 blocks work as expected */
76#if 0
77#error "this is not an error"
78
79#if 1
80a b c in skipped block
81#endif
82
83/* Comments are whitespace too */
84
85#endif
86/* CHECK-NOT: {{^}}a b c in skipped block{{$}}
87 * CHECK-NOT: {{^}}/* Comments are whitespace too
88 */
89
90Preserve URLs: http://clang.llvm.org
91/* CHECK: {{^}}Preserve URLs: http://clang.llvm.org{{$}}
92 */
93
94/* The following tests ensure we ignore # and ## in macro bodies */
95
96#define FOO_NO_STRINGIFY(a) test(# a)
97FOO_NO_STRINGIFY(foobar)
98/* CHECK: {{^}}test(# foobar){{$}}
99 */
100
101#define FOO_NO_PASTE(a, b) test(b##a)
102FOO_NO_PASTE(xxx,yyy)
103/* CHECK: {{^}}test(yyy##xxx){{$}}
104 */
105
106#define BAR_NO_STRINGIFY(a) test(#a)
107BAR_NO_STRINGIFY(foobar)
108/* CHECK: {{^}}test(#foobar){{$}}
109 */
110