#line 'a' // expected-error {{#line directive requires a positive integer argument}}
#line 0 // expected-warning {{#line directive with zero argument is a GNU extension}}
#line 00 // expected-warning {{#line directive with zero argument is a GNU extension}}
#line 2147483648 // expected-warning {{C requires #line number to be less than 2147483648, allowed as extension}}
#line 42 // ok
#line 42 'a' // expected-error {{invalid filename for #line directive}}
#line 42 "foo/bar/baz.h" // ok
#define A 42 "foo"
#line A
# 42
# 42 "foo"
# 42 "foo" 2 // expected-error {{invalid line marker flag '2': cannot pop empty include stack}}
# 42 "foo" 1 3 // enter
# 42 "foo" 2 3 // exit
# 42 "foo" 2 3 4 // expected-error {{invalid line marker flag '2': cannot pop empty include stack}}
# 42 "foo" 3 4
# 'a' // expected-error {{invalid preprocessing directive}}
# 42 'f' // expected-error {{invalid filename for line marker directive}}
# 42 1 3 // expected-error {{invalid filename for line marker directive}}
# 42 "foo" 3 1 // expected-error {{invalid flag line marker directive}}
# 42 "foo" 42 // expected-error {{invalid flag line marker directive}}
# 42 "foo" 1 2 // expected-error {{invalid flag line marker directive}}
#line 92 "blonk.c"
#error ABC
#error DEF
#line 150
# 192 "glomp.h" // not a system header.
typedef int x; typedef int x;
# 192 "glomp.h" 3 // System header.
typedef int y; typedef int y;
typedef int q;
#line 42 "blonk.h" // doesn't change system headerness.
typedef int z; typedef int z;
# 97 // doesn't change system headerness.
typedef int z1; typedef int z1;
# 42 "blonk.h" // DOES change system headerness.
typedef int w; typedef int w;
typedef int q;
#define EMPTY()
#line 2 "foo.c" EMPTY( )
#line 2 "foo.c" NONEMPTY( ) // expected-warning{{extra tokens at end of #line directive}}
#line 0xf // expected-error {{#line directive requires a simple digit sequence}}
#line 42U // expected-error {{#line directive requires a simple digit sequence}}
#line 010 // expected-warning {{#line directive interprets number as decimal, not octal}}
extern int array[__LINE__ == 10 ? 1:-1];
#line 41
extern char array2[\
_\
_LINE__ == 42 ? 1: -1];
#line 0 "line-directive.c" // expected-warning {{#line directive with zero argument is a GNU extension}}
undefined t;