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1 // RUN: %clang_cc1 %s -E | FileCheck -strict-whitespace %s
2 // Check for C99 6.10.3.4p2.
3 
4 #define f(a) f(x * (a))
5 #define x 2
6 #define z z[0]
7 f(f(z));
8 // CHECK: f(2 * (f(2 * (z[0]))));
9 
10 
11 
12 #define A A B C
13 #define B B C A
14 #define C C A B
15 A
16 // CHECK: A B C A B A C A B C A
17 
18 
19 // PR1820
20 #define i(x) h(x
21 #define h(x) x(void)
22 extern int i(i));
23 // CHECK: int i(void)
24 
25 
26 #define M_0(x) M_ ## x
27 #define M_1(x) x + M_0(0)
28 #define M_2(x) x + M_1(1)
29 #define M_3(x) x + M_2(2)
30 #define M_4(x) x + M_3(3)
31 #define M_5(x) x + M_4(4)
32 
33 a: M_0(1)(2)(3)(4)(5);
34 b: M_0(5)(4)(3)(2)(1);
35 
36 // CHECK: a: 2 + M_0(3)(4)(5);
37 // CHECK: b: 4 + 4 + 3 + 2 + 1 + M_0(3)(2)(1);
38 
39 #define n(v) v
40 #define l m
41 #define m l a
42 c: n(m) X
43 // CHECK: c: m a X
44