clang/test/Parser/expressions.c

   1 // RUN: %clang_cc1 -fsyntax-only -verify %s
   2
   3 void test1() {
   4   if (sizeof (int){ 1}) {}   // sizeof compound literal
   5   if (sizeof (int)) {}       // sizeof type
   6
   7   (void)(int)4;   // cast.
   8   (void)(int){4}; // compound literal.
   9
  10   int A = (struct{ int a;}){ 1}.a;
  11 }
  12
  13 int test2(int a, int b) {
  14   return a ? (void)a,b : a;
  15 }
  16
  17 int test3(int a, int b, int c) {
  18   return a = b = c;
  19 }
  20
  21 int test4() {
  22   test4();
  23   return 0;
  24 }
  25
  26 struct X0 { struct { struct { int c[10][9]; } b; } a; };
  27
  28 int test_offsetof() {
  29   (void)__builtin_offsetof(struct X0, a.b.c[4][5]);
  30   return 0;
  31 }
  32
  33 void test_sizeof(){
  34         int arr[10];
  35         (void)sizeof arr[0];
  36         (void)sizeof(arr[0]);
  37         (void)sizeof(arr)[0];
  38 }
  39
  40 // PR3418
  41 int test_leading_extension() {
  42   __extension__ (*(char*)0) = 1; // expected-warning {{indirection of non-volatile null pointer}} \
  43                                  // expected-note {{consider using __builtin_trap}}
  44   return 0;
  45 }
  46
  47 // PR3972
  48 int test5(int);
  49 int test6(void) {
  50   return test5(      // expected-note {{to match}}
  51                test5(1)
  52                  ; // expected-error {{expected ')'}}
  53 }
  54
  55 // PR8394
  56 void test7() {
  57     ({} // expected-note {{to match}}
  58     ;   // expected-error {{expected ')'}}
  59 }
  60
  61 // PR16992
  62 struct pr16992 { int x; };
  63
  64 void func_16992 () {
  65   int x1 = sizeof int;            // expected-error {{expected parentheses around type name in sizeof expression}}
  66   int x2 = sizeof struct pr16992; // expected-error {{expected parentheses around type name in sizeof expression}}
  67   int x3 = __alignof int;         // expected-error {{expected parentheses around type name in __alignof expression}}
  68   int x4 = _Alignof int;          // expected-error {{expected parentheses around type name in _Alignof expression}}
  69 }
  70
  71 void callee(double, double);
  72 void test8() {
  73   callee(foobar,   // expected-error {{use of undeclared identifier 'foobar'}}
  74          fizbin);  // expected-error {{use of undeclared identifier 'fizbin'}}
  75 }