| 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 cannot 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 cannot have 'static' storage duration}} |
|---|
| 38 | extern int b[i]; // expected-error {{variable length array declaration cannot have 'extern' linkage}} |
|---|
| 39 | |
|---|
| 40 | extern int (*c1)[i]; // expected-error {{variably modified type declaration cannot 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 | void pr23151(int (*p1)[*]) // expected-error {{variable length array must be bound in function definition}} |
|---|
| 65 | {} |
|---|
| 66 | |
|---|
| 67 | // Make sure this isn't treated as an error |
|---|
| 68 | int TransformBug(int a) { |
|---|
| 69 | return sizeof(*(int(*)[({ goto v; v: a;})]) 0); // expected-warning {{use of GNU statement expression extension}} |
|---|
| 70 | } |
|---|
| 71 | |
|---|
| 72 | // PR36157 |
|---|
| 73 | struct { |
|---|
| 74 | int a[ // expected-error {{variable length array in struct}} |
|---|
| 75 | implicitly_declared() // expected-warning {{implicit declaration}} |
|---|
| 76 | ]; |
|---|
| 77 | }; |
|---|
| 78 | int (*use_implicitly_declared)() = implicitly_declared; // ok, was implicitly declared at file scope |
|---|
| 79 | |
|---|
| 80 | void VLAPtrAssign(int size) { |
|---|
| 81 | int array[1][2][3][size][4][5]; |
|---|
| 82 | // This is well formed |
|---|
| 83 | int (*p)[2][3][size][4][5] = array; |
|---|
| 84 | // Last array dimension too large |
|---|
| 85 | int (*p2)[2][3][size][4][6] = array; // expected-warning {{incompatible pointer types}} |
|---|
| 86 | // Second array dimension too large |
|---|
| 87 | int (*p3)[20][3][size][4][5] = array; // expected-warning {{incompatible pointer types}} |
|---|
| 88 | |
|---|
| 89 | // Not illegal in C, program _might_ be well formed if size == 3. |
|---|
| 90 | int (*p4)[2][size][3][4][5] = array; |
|---|
| 91 | } |
|---|
| 92 | |
|---|