test/Sema/vla.c

   1 // RUN: clang-cc %s -verify -fsyntax-only -pedantic
   2
   3 int test1() {
   4   typedef int x[test1()];  // vla
   5   static int y = sizeof(x);  // expected-error {{not a compile-time constant}}
   6 }
   7
   8 // PR2347
   9 void f (unsigned int m)
  10 {
  11   int e[2][m];
  12
  13   e[0][0] = 0;
  14 }
  15
  16 // PR3048
  17 int x = sizeof(struct{char qq[x];}); // expected-error {{fields must have a constant size}}
  18
  19 // PR2352
  20 void f2(unsigned int m)
  21 {
  22   extern int e1[2][m]; // expected-error {{variable length array declaration can not have 'extern' linkage}}
  23
  24   e1[0][0] = 0;
  25
  26 }
  27
  28 // PR2361
  29 int i;
  30 int c[][i]; // expected-error {{variably modified type declaration not allowed at file scope}}
  31 int d[i]; // expected-error {{variable length array declaration not allowed at file scope}}
  32
  33 int (*e)[i]; // expected-error {{variably modified type declaration not allowed at file scope}}
  34
  35 void f3()
  36 {
  37   static int a[i]; // expected-error {{variable length array declaration can not have 'static' storage duration}}
  38   extern int b[i]; // expected-error {{variable length array declaration can not have 'extern' linkage}}
  39
  40   extern int (*c1)[i]; // expected-error {{variably modified type declaration can not have 'extern' linkage}}
  41   static int (*d)[i];
  42 }
  43
  44 // PR3663
  45 static const unsigned array[((2 * (int)((((4) / 2) + 1.0/3.0) * (4) - 1e-8)) + 1)]; // expected-warning {{size of static array must be an integer constant expression}}
  46
  47 int a[*]; // expected-error {{star modifier used outside of function prototype}}
  48 int f4(int a[*][*]);
  49
  50 // PR2044
  51 int pr2044(int b) {int (*c(void))[b];**c() = 2;} // expected-error {{variably modified type}}
  52 int pr2044b;
  53 int (*pr2044c(void))[pr2044b]; // expected-error {{variably modified type}}
  54
  55 const int f5_ci = 1;
  56 void f5() { char a[][f5_ci] = {""}; } // expected-error {{variable-sized object may not be initialized}}