clang/test/Sema/offsetof-64.c

   1 // RUN: %clang_cc1 -fsyntax-only -verify %s -triple x86_64-linux-gnu
   2
   3 // PR15216
   4 // Don't crash when taking computing the offset of structs with large arrays.
   5 const unsigned long Size = (1l << 60);
   6
   7 struct Chunk1 {
   8   char padding[Size]; // expected-warning {{folded to constant}}
   9   char more_padding[1][Size]; // expected-warning {{folded to constant}}
  10   char data;
  11 };
  12
  13 int test1 = __builtin_offsetof(struct Chunk1, data);
  14
  15 struct Chunk2 {
  16   char padding[Size][Size][Size];  // expected-error {{array is too large}}
  17   char data;
  18 };
  19
  20 // FIXME: Remove this error when the constant evaluator learns to
  21 // ignore bad types.
  22 int test2 = __builtin_offsetof(struct Chunk2, data);  // expected-error{{initializer element is not a compile-time constant}}