clang/test/Preprocessor/c99-6_10_3_4_p5.c

// Example from C99 6.10.3.4p5
// RUN: %clang_cc1 -E %s | FileCheck -strict-whitespace %s

#define x 3 
#define f(a) f(x * (a)) 
#undef x 
#define x 2 
#define g f 
#define z z[0] 
#define h g(~ 
#define m(a) a(w) 
#define w 0,1 
#define t(a) a 
#define p() int 
#define q(x) x 
#define r(x,y) x ## y 
#define str(x) # x 
            f(y+1) + f(f(z)) % t(t(g)(0) + t)(1); 
            g(x+(3,4)-w) | h 5) & m 
(f)^m(m); 
p() i[q()] = { q(1), r(2,3), r(4,), r(,5), r(,) }; 
char c[2][6] = { str(hello), str() }; 

// CHECK: f(2 * (y+1)) + f(2 * (f(2 * (z[0])))) % f(2 * (0)) + t(1);
// CHECK: f(2 * (2 +(3,4)-0,1)) | f(2 * (~ 5)) & f(2 * (0,1))^m(0,1);
// CHECK: int i[] = { 1, 23, 4, 5, };
// CHECK: char c[2][6] = { "hello", "" };