1/* Copyright (C) 2000, 2001, 2003 Free Software Foundation, Inc.  */
2
3/* { dg-do preprocess } */
4/* { dg-options "-P" } */
5
6/* This tests correct spacing of macro expansion output, as well as
7   the line it falls on.  This is quite subtle; it involves newlines
8   within macro arguments becoming spaces, but not if it turns out to
9   not be a macro invocation.  Also, multiple macro invocations spread
10   across many lines.
11
12   Neil Booth, 1 Dec 2000, 23 Sep 2001.  */
13
14/* The actual location of the expansion of a multi-line macro
15   invocation is not defined: we might consider them to be in the same
16   line as the initial token of the invocation, or as the final token
17   of the invocation, or even anything in between.  We choose to make
18   it the initial token, such that everything that is in a logical
19   line ends up in a single line after preprocessing.
20
21   Alexandre Oliva, Sept 13, 2003.  */
22
23#define str(x) #x
24#define f(x) x
25#define glue(x, y) x ## y
26#define EMPTY
27/* These are based on PR 4492, we mustn't lose padding tokens when
28   scanning ahead for a '(' and failing to find it.  */
29#define A(x) B x
30#define B(x)
31#define C A
32#define D() A
33
34/* The correct output is shown here.  Note the spaces, and the way
35   everything after the invocation of f appears on the same line.
36
37 44 ;
38B Q B Q A Q A:
39f
40bar
41A
42bad
43g "1 2" bam baz
44
45*/
46
47glue (EMPTY 4, 4) EMPTY;
48A(Q) C(Q) D()Q D():
49f
50bar
51A
52bad
53f (g) str
54(
551
562
57) f
58(bam) baz
59
60/* { dg-final { scan-file spacing1.i " 44 ;" } }
61   { dg-final { scan-file spacing1.i "B Q B Q A Q A:" } }
62   { dg-final { scan-file-not spacing1.i "f\[^\n\]*bar" } }
63   { dg-final { scan-file spacing1.i "(^|\n)bar" } }
64   { dg-final { scan-file spacing1.i "(^|\n)A($|\n)" } }
65   { dg-final { scan-file spacing1.i "(^|\n)bad($|\n)" } }
66   { dg-final { scan-file spacing1.i "g \"1 2\" bam baz" } } */
67