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      1 // RUN: %clang_cc1 %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 {{variable length array folded to constant array as an extension}}
     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-warning {{variable length array folded to constant array as an extension}}
     57 
     58 // PR5185
     59 void pr5185(int a[*]);
     60 void pr5185(int a[*]) // expected-error {{variable length array must be bound in function definition}}
     61 {
     62 }
     63 
     64 // Make sure this isn't treated as an error
     65 int TransformBug(int a) {
     66  return sizeof(*(int(*)[({ goto v; v: a;})]) 0); // expected-warning {{use of GNU statement expression extension}}
     67 }
     68