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// RUN: %clang_cc1 %s -E | FileCheck -strict-whitespace %s
// Check for C99 6.10.3.4p2.
#define f(a) f(x * (a))
#define x 2
#define z z[0]
f(f(z));
// CHECK: f(2 * (f(2 * (z[0]))));
#define A A B C
#define B B C A
#define C C A B
A
// CHECK: A B C A B A C A B C A
// PR1820
#define i(x) h(x
#define h(x) x(void)
extern int i(i));
// CHECK: int i(void)
#define M_0(x) M_ ## x
#define M_1(x) x + M_0(0)
#define M_2(x) x + M_1(1)
#define M_3(x) x + M_2(2)
#define M_4(x) x + M_3(3)
#define M_5(x) x + M_4(4)
a: M_0(1)(2)(3)(4)(5);
b: M_0(5)(4)(3)(2)(1);
// CHECK: a: 2 + M_0(3)(4)(5);
// CHECK: b: 4 + 4 + 3 + 2 + 1 + M_0(3)(2)(1);
#define n(v) v
#define l m
#define m l a
c: n(m) X
// CHECK: c: m a X
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