1// RUN: %clang_cc1 -fsyntax-only -verify -pedantic %s
2// RUN: %clang_cc1 -E %s 2>&1 | grep 'blonk.c:92:2: error: #error ABC'
3// RUN: %clang_cc1 -E %s 2>&1 | grep 'blonk.c:93:2: error: #error DEF'
4
5#line 'a'            // expected-error {{#line directive requires a positive integer argument}}
6#line 0              // expected-error {{#line directive requires a positive integer argument}}
7#line 00             // expected-error {{#line directive requires a positive integer argument}}
8#line 2147483648     // expected-warning {{C requires #line number to be less than 2147483648, allowed as extension}}
9#line 42             // ok
10#line 42 'a'         // expected-error {{invalid filename for #line directive}}
11#line 42 "foo/bar/baz.h"  // ok
12
13
14// #line directives expand macros.
15#define A 42 "foo"
16#line A
17
18# 42
19# 42 "foo"
20# 42 "foo" 2 // expected-error {{invalid line marker flag '2': cannot pop empty include stack}}
21# 42 "foo" 1 3  // enter
22# 42 "foo" 2 3  // exit
23# 42 "foo" 2 3 4 // expected-error {{invalid line marker flag '2': cannot pop empty include stack}}
24# 42 "foo" 3 4
25
26# 'a'            // expected-error {{invalid preprocessing directive}}
27# 42 'f'         // expected-error {{invalid filename for line marker directive}}
28# 42 1 3         // expected-error {{invalid filename for line marker directive}}
29# 42 "foo" 3 1   // expected-error {{invalid flag line marker directive}}
30# 42 "foo" 42    // expected-error {{invalid flag line marker directive}}
31# 42 "foo" 1 2   // expected-error {{invalid flag line marker directive}}
32
33
34// These are checked by the RUN line.
35#line 92 "blonk.c"
36#error ABC  // expected-error {{#error ABC}}
37#error DEF  // expected-error {{#error DEF}}
38
39
40// Verify that linemarker diddling of the system header flag works.
41
42# 192 "glomp.h" // not a system header.
43typedef int x;  // expected-note {{previous definition is here}}
44typedef int x;  // expected-error {{redefinition of typedef 'x' is invalid in C}}
45
46# 192 "glomp.h" 3 // System header.
47typedef int y;  // ok
48typedef int y;  // ok
49
50typedef int q;  // q is in system header.
51
52#line 42 "blonk.h"  // doesn't change system headerness.
53
54typedef int z;  // ok
55typedef int z;  // ok
56
57# 97     // doesn't change system headerness.
58
59typedef int z1;  // ok
60typedef int z1;  // ok
61
62# 42 "blonk.h"  // DOES change system headerness.
63
64typedef int w;  // expected-note {{previous definition is here}}
65typedef int w;  // expected-error {{redefinition of typedef 'w' is invalid in C}}
66
67typedef int q;  // original definition in system header, should not diagnose.
68
69// This should not produce an "extra tokens at end of #line directive" warning,
70// because #line is allowed to contain expanded tokens.
71#define EMPTY()
72#line 2 "foo.c" EMPTY( )
73#line 2 "foo.c" NONEMPTY( )  // expected-warning{{extra tokens at end of #line directive}}
74
75// PR3940
76#line 0xf  // expected-error {{#line directive requires a simple digit sequence}}
77#line 42U  // expected-error {{#line directive requires a simple digit sequence}}
78
79
80// Line markers are digit strings interpreted as decimal numbers, this is
81// 10, not 8.
82#line 010  // expected-warning {{#line directive interprets number as decimal, not octal}}
83extern int array[__LINE__ == 10 ? 1:-1];
84
85/* PR3917 */
86#line 41
87extern char array2[\
88_\
89_LINE__ == 42 ? 1: -1];  /* line marker is location of first _ */
90
91
92
93