37 lines · cpp
1 RUN: %clang_cc1 -E %s -pedantic -std=c++2a | FileCheck -strict-whitespace %s2 3#define LPAREN() (4#define G(Q) 425#define F1(R, X, ...) __VA_OPT__(G R X) )61: int x = F1(LPAREN(), 0, <:-);7// CHECK: 1: int x = 42;8 9#define F2(...) f(0 __VA_OPT__(,) __VA_ARGS__)10#define EMP112: F2(EMP)12// CHECK: 2: f(0 )13 14#define H3(X, ...) #__VA_OPT__(X##X X##X)153: H3(, 0)16// CHECK: 3: ""17 18#define H4(X, ...) __VA_OPT__(a X ## X) ## b194: H4(, 1)20// CHECK: 4: a b21 22#define H4B(X, ...) a ## __VA_OPT__(X ## X b)234B: H4B(, 1)24// CHECK: 4B: a b25 26#define H5A(...) __VA_OPT__()/**/__VA_OPT__()27#define H5B(X) a ## X ## b28#define H5C(X) H5B(X)295: H5C(H5A())30// CHECK: 5: ab31 32namespace GH60268 {33#define H6(X, ...) __VA_OPT__(a ## X) ## b346: H6(, 1);35// CHECK: 6: ab36}37