clang/test/Sema/static-array.c

   1 // RUN: %clang_cc1 -triple x86_64-apple-macosx10.14.0 -fsyntax-only -fblocks -pedantic -Wno-strict-prototypes -verify %s
   2
   3 void cat0(int a[static 0]) {} // expected-warning {{zero size arrays are an extension}} \
   4                               // expected-note {{callee declares array parameter as static here}}
   5
   6 void cat(int a[static 3]) {} // expected-note 4 {{callee declares array parameter as static here}} expected-note 2 {{passing argument to parameter 'a' here}}
   7
   8 void vat(int i, int a[static i]) {} // expected-note {{callee declares array parameter as static here}}
   9
  10 void f(int *p) {
  11   int a[2], b[3], c[4];
  12
  13   cat0(0); // expected-warning {{null passed to a callee that requires a non-null argument}}
  14
  15   cat(0); // expected-warning {{null passed to a callee that requires a non-null argument}}
  16   cat(a); // expected-warning {{array argument is too small; contains 2 elements, callee requires at least 3}}
  17   cat(b);
  18   cat(c);
  19   cat(p);
  20
  21   vat(1, 0); // expected-warning {{null passed to a callee that requires a non-null argument}}
  22   vat(3, b);
  23
  24   char d[4];
  25   cat((int *)d); // expected-warning {{array argument is too small; is of size 4, callee requires at least 12}}
  26   cat(d); // expected-warning {{array argument is too small; is of size 4, callee requires at least 12}} expected-warning {{incompatible pointer types}}
  27
  28   char e[12];
  29   cat((int *)e);
  30   cat(e); // expected-warning {{incompatible pointer types}}
  31 }
  32
  33
  34 typedef int td[static 3]; // expected-error {{'static' used in array declarator outside of function prototype}}
  35 typedef void(*fp)(int[static 42]); // no-warning
  36
  37 void g(void) {
  38   int a[static 42]; // expected-error {{'static' used in array declarator outside of function prototype}}
  39
  40   int b[const 10]; // expected-error {{type qualifier used in array declarator outside of function prototype}}
  41   int c[volatile 10]; // expected-error {{type qualifier used in array declarator outside of function prototype}}
  42   int d[restrict 10]; // expected-error {{type qualifier used in array declarator outside of function prototype}}
  43
  44   int e[static restrict 1]; // expected-error {{'static' used in array declarator outside of function prototype}}
  45 }
  46
  47 void h(int [static const 10][42]); // no-warning
  48
  49 void i(int [10]
  50        [static 42]); // expected-error {{'static' used in non-outermost array type derivation}}
  51
  52 void j(int [10]
  53        [const 42]); // expected-error {{type qualifier used in non-outermost array type derivation}}
  54
  55 void k(int (*x)[static 10]); // expected-error {{'static' used in non-outermost array type derivation}}
  56 void l(int (x)[static 10]); // no-warning
  57 void m(int *x[static 10]); // no-warning
  58 void n(int *(x)[static 10]); // no-warning
  59
  60 void o(int (x[static 10])(void)); // expected-error{{'x' declared as array of functions of type 'int (void)'}}
  61 void p(int (^x)[static 10]); // expected-error{{block pointer to non-function type is invalid}}
  62 void q(int (^x[static 10])()); // no-warning
  63
  64 void r(x)
  65   int x[restrict]; // no-warning
  66 {}