hanchenye-llvm-project/clang/test/Sema/array-size-64.c

// RUN: %clang_cc1 -triple x86_64-apple-darwin -verify %s

void f() {
  int a[2147483647U][2147483647U]; // expected-error{{array is too large}}
  int b[1073741825U - 1U][2147483647U];
  int c[18446744073709551615U/sizeof(int)/2];
}
Emit an error if an array is too large. We're slightly more strict than GCC 4.2 here when building 32-bit (where GCC will allow allocation of an array for which we can't get a valid past-the-end pointer), and emulate its odd behavior in 64-bit where it only allows 63 bits worth of storage in the array. The former is a correctness issue; the latter is harmless in practice (you wouldn't be able to use such an array anyway) and helps us pass a GCC DejaGNU test. Fixes <rdar://problem/8212293>. llvm-svn: 111338 2010-08-18 08:39:00 +08:00			`// RUN: %clang_cc1 -triple x86_64-apple-darwin -verify %s`

			`void f() {`
			`int a[2147483647U][2147483647U]; // expected-error{{array is too large}}`
			`int b[1073741825U - 1U][2147483647U];`
			`int c[18446744073709551615U/sizeof(int)/2];`
			`}`