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150
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1 /* Clang supports a very limited subset of -traditional-cpp, basically we only
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2 * intend to add support for things that people actually rely on when doing
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3 * things like using /usr/bin/cpp to preprocess non-source files. */
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4
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5 /*
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6 RUN: %clang_cc1 -traditional-cpp %s -E | FileCheck -strict-whitespace %s
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7 RUN: %clang_cc1 -traditional-cpp %s -E -C | FileCheck -check-prefix=CHECK-COMMENTS %s
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8 RUN: %clang_cc1 -traditional-cpp -x c++ %s -E | FileCheck -check-prefix=CHECK-CXX %s
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9 */
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10
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11 /* -traditional-cpp should eliminate all C89 comments. */
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12 /* CHECK-NOT: /*
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13 * CHECK-COMMENTS: {{^}}/* -traditional-cpp should eliminate all C89 comments. *{{/$}}
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14 */
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15
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16 /* -traditional-cpp should only eliminate "//" comments in C++ mode. */
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17 /* CHECK: {{^}}foo // bar{{$}}
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18 * CHECK-CXX: {{^}}foo {{$}}
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19 */
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20 foo // bar
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21
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22
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23 /* The lines in this file contain hard tab characters and trailing whitespace;
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24 * do not change them! */
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25
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26 /* CHECK: {{^}} indented!{{$}}
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27 * CHECK: {{^}}tab separated values{{$}}
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28 */
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29 indented!
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30 tab separated values
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31
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32 #define bracket(x) >>>x<<<
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33 bracket(| spaces |)
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34 /* CHECK: {{^}}>>>| spaces |<<<{{$}}
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35 */
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36
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37 /* This is still a preprocessing directive. */
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38 # define foo bar
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39 foo!
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40 -
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41 foo! foo!
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42 /* CHECK: {{^}}bar!{{$}}
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43 * CHECK: {{^}} bar! bar! {{$}}
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44 */
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45
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46 /* Deliberately check a leading newline with spaces on that line. */
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47
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48 # define foo bar
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49 foo!
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50 -
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51 foo! foo!
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52 /* CHECK: {{^}}bar!{{$}}
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53 * CHECK: {{^}} bar! bar! {{$}}
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54 */
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55
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56 /* FIXME: -traditional-cpp should not consider this a preprocessing directive
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57 * because the # isn't in the first column.
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58 */
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59 #define foo2 bar
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60 foo2!
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61 /* If this were working, both of these checks would be on.
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62 * CHECK-NOT: {{^}} #define foo2 bar{{$}}
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63 * CHECK-NOT: {{^}}foo2!{{$}}
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64 */
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65
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66 /* FIXME: -traditional-cpp should not homogenize whitespace in macros.
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67 */
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68 #define bracket2(x) >>> x <<<
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69 bracket2(spaces)
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70 /* If this were working, this check would be on.
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71 * CHECK-NOT: {{^}}>>> spaces <<<{{$}}
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72 */
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73
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74
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75 /* Check that #if 0 blocks work as expected */
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76 #if 0
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77 #error "this is not an error"
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78
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79 #if 1
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80 a b c in skipped block
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81 #endif
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82
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83 /* Comments are whitespace too */
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84
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85 #endif
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86 /* CHECK-NOT: {{^}}a b c in skipped block{{$}}
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87 * CHECK-NOT: {{^}}/* Comments are whitespace too
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88 */
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89
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90 Preserve URLs: http://clang.llvm.org
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91 /* CHECK: {{^}}Preserve URLs: http://clang.llvm.org{{$}}
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92 */
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93
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94 /* The following tests ensure we ignore # and ## in macro bodies */
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95
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96 #define FOO_NO_STRINGIFY(a) test(# a)
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97 FOO_NO_STRINGIFY(foobar)
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98 /* CHECK: {{^}}test(# foobar){{$}}
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99 */
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100
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101 #define FOO_NO_PASTE(a, b) test(b##a)
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102 FOO_NO_PASTE(xxx,yyy)
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103 /* CHECK: {{^}}test(yyy##xxx){{$}}
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104 */
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105
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106 #define BAR_NO_STRINGIFY(a) test(#a)
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107 BAR_NO_STRINGIFY(foobar)
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108 /* CHECK: {{^}}test(#foobar){{$}}
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109 */
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