clang/test/Misc/reduced-diags-macros.cpp

   1 // RUN: not %clang_cc1 -fsyntax-only %s 2>&1 | FileCheck %s -strict-whitespace
   2
   3 #define NO_INITIATION(x) int a = x * 2
   4 #define NO_DEFINITION(x) int c = x * 2
   5
   6 NO_INITIATION(a);
   7 NO_DEFINITION(b);
   8
   9 // CHECK: {{.*}}:6:15: warning: variable 'a' is uninitialized when used within its own initialization
  10 // CHECK-NEXT: NO_INITIATION(a);
  11 // CHECK-NEXT: ~~~~~~~~~~~~~~^~
  12 // CHECK-NEXT: {{.*}}:3:34: note: expanded from macro 'NO_INITIATION'
  13 // CHECK-NEXT: #define NO_INITIATION(x) int a = x * 2
  14 // CHECK-NEXT:                              ~   ^
  15
  16 // CHECK: {{.*}}:7:15: error: use of undeclared identifier 'b'
  17 // CHECK-NEXT: NO_DEFINITION(b);
  18 // CHECK-NEXT:               ^
  19
  20
  21 #define F(x) x + 1
  22 #define ADD(x,y) y + F(x)
  23 #define SWAP_ARGU(x,y) ADD(y,x)
  24
  25 int  p = SWAP_ARGU(3, x);
  26
  27 // CHECK: {{.*}}:25:23: error: use of undeclared identifier 'x'
  28 // CHECK-NEXT: int  p = SWAP_ARGU(3, x);
  29 // CHECK-NEXT:                       ^
  30
  31 #define APPLY(f,x,y) x f y
  32
  33 struct node {
  34 };
  35
  36 node ff;
  37
  38 int r = APPLY(+,ff,1);
  39 // CHECK: {{.*}}:38:15: error: invalid operands to binary expression ('node' and 'int')
  40 // CHECK-NEXT: int r = APPLY(+,ff,1);
  41 // CHECK-NEXT:               ^ ~~ ~
  42 // CHECK-NEXT: {{.*}}:31:24: note: expanded from macro 'APPLY'
  43 // CHECK-NEXT: #define APPLY(f,x,y) x f y
  44 // CHECK-NEXT:                      ~ ^ ~