1// RUN: %clang_cc1 -fsyntax-only -verify -std=c++11 -triple x86_64-linux-gnu %s 2 3int n; 4constexpr int *p = 0; 5// expected-error@+1 {{must be initialized by a constant expression}} 6constexpr int *k = (int *) __builtin_assume_aligned(p, 16, n = 5); 7 8constexpr void *l = __builtin_assume_aligned(p, 16); 9 10// expected-error@+2 {{must be initialized by a constant expression}} 11// expected-note@+1 {{cast from 'void *' is not allowed in a constant expression}} 12constexpr int *c = (int *) __builtin_assume_aligned(p, 16); 13 14// expected-error@+2 {{must be initialized by a constant expression}} 15// expected-note@+1 {{alignment of the base pointee object (4 bytes) is less than the asserted 16 bytes}} 16constexpr void *m = __builtin_assume_aligned(&n, 16); 17 18// expected-error@+2 {{must be initialized by a constant expression}} 19// expected-note@+1 {{offset of the aligned pointer from the base pointee object (-2 bytes) is not a multiple of the asserted 4 bytes}} 20constexpr void *q1 = __builtin_assume_aligned(&n, 4, 2); 21// expected-error@+2 {{must be initialized by a constant expression}} 22// expected-note@+1 {{offset of the aligned pointer from the base pointee object (2 bytes) is not a multiple of the asserted 4 bytes}} 23constexpr void *q2 = __builtin_assume_aligned(&n, 4, -2); 24constexpr void *q3 = __builtin_assume_aligned(&n, 4, 4); 25constexpr void *q4 = __builtin_assume_aligned(&n, 4, -4); 26 27static char ar1[6]; 28// expected-error@+2 {{must be initialized by a constant expression}} 29// expected-note@+1 {{alignment of the base pointee object (1 byte) is less than the asserted 16 bytes}} 30constexpr void *r1 = __builtin_assume_aligned(&ar1[2], 16); 31 32static char ar2[6] __attribute__((aligned(32))); 33// expected-error@+2 {{must be initialized by a constant expression}} 34// expected-note@+1 {{offset of the aligned pointer from the base pointee object (2 bytes) is not a multiple of the asserted 16 bytes}} 35constexpr void *r2 = __builtin_assume_aligned(&ar2[2], 16); 36constexpr void *r3 = __builtin_assume_aligned(&ar2[2], 16, 2); 37// expected-error@+2 {{must be initialized by a constant expression}} 38// expected-note@+1 {{offset of the aligned pointer from the base pointee object (1 byte) is not a multiple of the asserted 16 bytes}} 39constexpr void *r4 = __builtin_assume_aligned(&ar2[2], 16, 1); 40 41constexpr int* x = __builtin_constant_p((int*)0xFF) ? (int*)0xFF : (int*)0xFF; 42// expected-error@+2 {{must be initialized by a constant expression}} 43// expected-note@+1 {{value of the aligned pointer (255) is not a multiple of the asserted 32 bytes}} 44constexpr void *s1 = __builtin_assume_aligned(x, 32); 45// expected-error@+2 {{must be initialized by a constant expression}} 46// expected-note@+1 {{value of the aligned pointer (250) is not a multiple of the asserted 32 bytes}} 47constexpr void *s2 = __builtin_assume_aligned(x, 32, 5); 48constexpr void *s3 = __builtin_assume_aligned(x, 32, -1); 49 50