59 lines
2.6 KiB
C
59 lines
2.6 KiB
C
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// RUN: %clang_cc1 -ffreestanding -verify=c2x -std=c2x -Wpre-c2x-compat %s
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// RUN: %clang_cc1 -ffreestanding -verify=c17 -std=c17 %s
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/* WG14 N2934: yes
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* Revise spelling of keywords v7
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*/
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thread_local struct alignas(int) S { // c2x-warning {{'alignas' is incompatible with C standards before C23}} \
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c2x-warning {{'thread_local' is incompatible with C standards before C23}} \
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c2x-error 0+ {{thread-local storage is not supported for the current target}} \
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c17-error {{unknown type name 'thread_local'}} \
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c17-error {{expected identifier or '('}} \
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c17-error {{expected ')'}} \
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c17-note {{to match this '('}}
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bool b; // c2x-warning {{'bool' is incompatible with C standards before C23}}
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} s; // c17-error {{type specifier missing, defaults to 'int'; ISO C99 and later do not support implicit int}}
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static_assert(alignof(struct S) == alignof(int), ""); // c2x-warning {{'static_assert' is incompatible with C standards before C23}} \
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c2x-warning 2 {{'alignof' is incompatible with C standards before C23}} \
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c17-error 2 {{type specifier missing, defaults to 'int'; ISO C99 and later do not support implicit int}} \
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c17-error {{expected ')'}} \
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c17-warning {{declaration of 'struct S' will not be visible outside of this function}} \
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c17-note {{to match this '('}}
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#include <stdalign.h>
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// C17 and earlier must have __alignas_is_defined and __alignof_is_defined,
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// but C2x and later must not.
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#if __STDC_VERSION__ <= 201710L
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#if __alignas_is_defined != 1
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#error "alignas should be defined"
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#endif
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#if __alignof_is_defined != 1
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#error "alignof should be defined"
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#endif
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#else
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#ifdef __alignas_is_defined
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#error "alignas should not be defined"
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#endif
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#ifdef __alignof_is_defined
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#error "alignof should not be defined"
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#endif
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#endif
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#include <stdbool.h>
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// C17 and earlier must have bool defined as a macro, but C2x and later should
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// not (at least in Clang's implementation; it's permissible for bool to be a
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// macro in general, as it could expand to _Bool).
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#if __STDC_VERSION__ <= 201710L
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#ifndef bool
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#error "bool should be defined"
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#endif
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#else
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#ifdef bool
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#error "bool should not be defined"
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#endif
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#endif
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