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// RUN: %clang_cc1 -ffreestanding -verify=c2x -std=c2x -Wpre-c2x-compat %s
// RUN: %clang_cc1 -ffreestanding -verify=c17 -std=c17 %s
/* WG14 N2934: yes
* Revise spelling of keywords v7
*/
thread_local struct alignas(int) S { // c2x-warning {{'alignas' is incompatible with C standards before C2x}} \
c2x-warning {{'thread_local' is incompatible with C standards before C2x}} \
c2x-error 0+ {{thread-local storage is not supported for the current target}} \
c17-error {{unknown type name 'thread_local'}} \
c17-error {{expected identifier or '('}} \
c17-error {{expected ')'}} \
c17-note {{to match this '('}}
bool b; // c2x-warning {{'bool' is incompatible with C standards before C2x}}
} s; // c17-error {{type specifier missing, defaults to 'int'; ISO C99 and later do not support implicit int}}
static_assert(alignof(struct S) == alignof(int), ""); // c2x-warning {{'static_assert' is incompatible with C standards before C2x}} \
c2x-warning 2 {{'alignof' is incompatible with C standards before C2x}} \
c17-error 2 {{type specifier missing, defaults to 'int'; ISO C99 and later do not support implicit int}} \
c17-error {{expected ')'}} \
c17-warning {{declaration of 'struct S' will not be visible outside of this function}} \
c17-note {{to match this '('}}
#include <stdalign.h>
// C17 and earlier must have __alignas_is_defined and __alignof_is_defined,
// but C2x and later must not.
#if __STDC_VERSION__ <= 201710L
#if __alignas_is_defined != 1
#error "alignas should be defined"
#endif
#if __alignof_is_defined != 1
#error "alignof should be defined"
#endif
#else
#ifdef __alignas_is_defined
#error "alignas should not be defined"
#endif
#ifdef __alignof_is_defined
#error "alignof should not be defined"
#endif
#endif
#include <stdbool.h>
// C17 and earlier must have bool defined as a macro, but C2x and later should
// not (at least in Clang's implementation; it's permissible for bool to be a
// macro in general, as it could expand to _Bool).
#if __STDC_VERSION__ <= 201710L
#ifndef bool
#error "bool should be defined"
#endif
#else
#ifdef bool
#error "bool should not be defined"
#endif
#endif
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