File: macro_paste_hard.c

package info (click to toggle)
llvm-toolchain-6.0 1%3A6.0.1-10
  • links: PTS, VCS
  • area: main
  • in suites: buster
  • size: 598,080 kB
  • sloc: cpp: 3,046,253; ansic: 595,057; asm: 271,965; python: 128,926; objc: 106,554; sh: 21,906; lisp: 10,191; pascal: 6,094; ml: 5,544; perl: 5,265; makefile: 2,227; cs: 2,027; xml: 686; php: 212; csh: 117
file content (17 lines) | stat: -rw-r--r-- 354 bytes parent folder | download | duplicates (42) 
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
 
// RUN: %clang_cc1 -E %s | grep '1: aaab 2'
// RUN: %clang_cc1 -E %s | grep '2: 2 baaa'
// RUN: %clang_cc1 -E %s | grep '3: 2 xx'

#define a(n) aaa ## n
#define b 2
1: a(b b)   // aaab 2    2 gets expanded, not b.

#undef a
#undef b
#define a(n) n ## aaa
#define b 2
2: a(b b)   // 2 baaa    2 gets expanded, not b.

#define baaa xx
3: a(b b)   // 2 xx