line-directive.c revision 34a2c42ba8cc58a404238a3c1cbc4a7442e57832
1// RUN: %clang_cc1 -fsyntax-only -verify -pedantic %s 2// RUN: %clang_cc1 -E %s 2>&1 | grep 'blonk.c:92:2: error: ABC' 3// RUN: %clang_cc1 -E %s 2>&1 | grep 'blonk.c:93:2: 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-warning {{redefinition of typedef 'x' is a C11 feature}} 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-warning {{redefinition of typedef 'w' is a C11 feature}} 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