9a7a6dd3c3
Make top level modules for all the C standard library headers. The `__stddef` implementation headers need header guards now that they're all modular. stdarg.h and stddef.h will be textual headers in the builtin modules, and so need to be repeatedly included in both the system and builtin module case. Define their header guards for consistency, but ignore them when building with modules. `__stddef_null.h` needs to ignore its header guard when modules aren't being used to fulfill its redefinition obligation. `__stddef_nullptr_t.h` needs to add a guard for C23 so that `_Builtin_stddef` can compile in C17 and earlier modes. `_Builtin_stddef.nullptr_t` can't require C23 because it also needs to be usable from C++. Reviewed By: Bigcheese Differential Revision: https://reviews.llvm.org/D159064
126 lines
11 KiB
C
126 lines
11 KiB
C
// RUN: rm -fR %t
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// RUN: split-file %s %t
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// RUN: %clang_cc1 -fsyntax-only -verify -Werror=implicit-function-declaration -std=c89 %t/stdargneeds0.c
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// RUN: %clang_cc1 -fsyntax-only -verify=expected-modules -fmodules -fimplicit-module-maps -fmodules-cache-path=%t -Werror=implicit-function-declaration -std=c89 %t/stdargneeds0.c
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// RUN: %clang_cc1 -fsyntax-only -verify -Werror=implicit-function-declaration -std=c89 %t/stdargneeds1.c
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// RUN: %clang_cc1 -fsyntax-only -verify=expected-modules -fmodules -fimplicit-module-maps -fmodules-cache-path=%t -Werror=implicit-function-declaration -std=c89 %t/stdargneeds1.c
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// RUN: %clang_cc1 -fsyntax-only -verify -Werror=implicit-function-declaration -std=c89 %t/stdargneeds2.c
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// RUN: %clang_cc1 -fsyntax-only -verify=expected-modules -fmodules -fimplicit-module-maps -fmodules-cache-path=%t -Werror=implicit-function-declaration -std=c89 %t/stdargneeds2.c
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// RUN: %clang_cc1 -fsyntax-only -verify -Werror=implicit-function-declaration -std=c89 %t/stdargneeds3.c
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// RUN: %clang_cc1 -fsyntax-only -verify=expected-modules -fmodules -fimplicit-module-maps -fmodules-cache-path=%t -Werror=implicit-function-declaration -std=c89 %t/stdargneeds3.c
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// RUN: %clang_cc1 -fsyntax-only -verify -Werror=implicit-function-declaration -std=c89 %t/stdargneeds4.c
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// RUN: %clang_cc1 -fsyntax-only -verify=expected-modules -fmodules -fimplicit-module-maps -fmodules-cache-path=%t -Werror=implicit-function-declaration -std=c89 %t/stdargneeds4.c
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// RUN: %clang_cc1 -fsyntax-only -verify -Werror=implicit-function-declaration -std=c89 %t/stdargneeds5.c
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// RUN: %clang_cc1 -fsyntax-only -verify=expected-modules -fmodules -fimplicit-module-maps -fmodules-cache-path=%t -Werror=implicit-function-declaration -std=c89 %t/stdargneeds5.c
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// Split the file so that the "implicitly declaring library function" errors get repeated.
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// Use C89 to verify that __need_ can be used to get types that wouldn't normally be available.
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//--- stdargneeds0.c
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static void f(int p, ...) {
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__gnuc_va_list g; // expected-error{{undeclared identifier '__gnuc_va_list'}} expected-modules-error{{undeclared identifier}}
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va_list v; // expected-error{{undeclared identifier 'va_list'}} expected-modules-error{{undeclared identifier}}
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va_start(v, p); // expected-error{{implicitly declaring library function 'va_start'}} expected-note{{include the header <stdarg.h> or explicitly provide a declaration for 'va_start'}} expected-error{{undeclared identifier 'v'}} \
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expected-modules-error{{implicitly declaring library function}} expected-modules-note{{provide a declaration}} expected-modules-error{{undeclared identifier}}
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int i = va_arg(v, int); // expected-error{{implicit declaration of function 'va_arg'}} expected-error{{expected expression}} expected-error{{use of undeclared identifier 'v'}} \
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expected-modules-error{{implicit declaration of function}} expected-modules-error{{expected expression}} expected-modules-error{{undeclared identifier}}
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va_end(v); // expected-error{{implicitly declaring library function 'va_end'}} expected-note{{include the header <stdarg.h> or explicitly provide a declaration for 'va_end'}} expected-error{{undeclared identifier 'v'}} \
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expected-modules-error{{implicitly declaring library function}} expected-modules-note{{provide a declaration}} expected-modules-error{{undeclared identifier}}
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__va_copy(g, v); // expected-error{{implicit declaration of function '__va_copy'}} expected-error{{use of undeclared identifier 'g'}} expected-error{{use of undeclared identifier 'v'}} \
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expected-modules-error{{implicit declaration of function}} expected-modules-error{{undeclared identifier}} expected-modules-error{{undeclared identifier}}
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va_copy(g, v); // expected-error{{implicitly declaring library function 'va_copy'}} expected-note{{include the header <stdarg.h> or explicitly provide a declaration for 'va_copy'}} expected-error{{use of undeclared identifier 'g'}} expected-error{{use of undeclared identifier 'v'}} \
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expected-modules-error{{implicitly declaring library function}} expected-modules-note{{provide a declaration}} expected-modules-error{{undeclared identifier}} expected-modules-error{{undeclared identifier}}
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}
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//--- stdargneeds1.c
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#define __need___va_list
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#include <stdarg.h>
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static void f(int p, ...) {
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__gnuc_va_list g;
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va_list v; // expected-error{{undeclared identifier}} \
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expected-modules-error{{'va_list' must be declared before it is used}} expected-modules-note@__stdarg_va_list.h:*{{declaration here is not visible}}
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va_start(v, p); // expected-error{{implicitly declaring library function}} expected-note{{provide a declaration}} expected-error{{undeclared identifier}} \
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expected-modules-error{{implicitly declaring library function}} expected-modules-note{{provide a declaration}}
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int i = va_arg(v, int); // expected-error{{implicit declaration of function}} expected-error{{expected expression}} expected-error{{undeclared identifier}} \
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expected-modules-error{{implicit declaration of function}} expected-modules-error{{expected expression}}
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va_end(v); // expected-error{{implicitly declaring library function}} expected-note{{provide a declaration}} expected-error{{undeclared identifier}} \
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expected-modules-error{{implicitly declaring library function}} expected-modules-note{{provide a declaration}}
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__va_copy(g, v); // expected-error{{implicit declaration of function}} expected-error{{undeclared identifier}} \
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expected-modules-error{{implicit declaration of function}}
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va_copy(g, v); // expected-error{{implicitly declaring library function}} expected-note{{provide a declaration}} expected-error{{undeclared identifier}} \
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expected-modules-error{{implicitly declaring library function}} expected-modules-note{{provide a declaration}}
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}
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//--- stdargneeds2.c
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#define __need_va_list
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#include <stdarg.h>
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static void f(int p, ...) {
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__gnuc_va_list g; // expected-error{{undeclared identifier}} \
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expected-modules-error{{'__gnuc_va_list' must be declared before it is used}} expected-modules-note@__stdarg___gnuc_va_list.h:*{{declaration here is not visible}}
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va_list v;
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va_start(v, p); // expected-error{{implicitly declaring library function}} expected-note{{provide a declaration}} \
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expected-modules-error{{implicitly declaring library function}} expected-modules-note{{provide a declaration}}
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int i = va_arg(v, int); // expected-error{{implicit declaration of function}} expected-error{{expected expression}} \
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expected-modules-error{{implicit declaration of function}} expected-modules-error{{expected expression}}
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va_end(v); // expected-error{{implicitly declaring library function}} expected-note{{provide a declaration}} \
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expected-modules-error{{implicitly declaring library function}} expected-modules-note{{provide a declaration}}
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__va_copy(g, v); // expected-error{{implicit declaration of function}} expected-error{{undeclared identifier}} \
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expected-modules-error{{implicit declaration of function}}
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va_copy(g, v); // expected-error{{implicitly declaring library function}} expected-note{{provide a declaration}} expected-error{{undeclared identifier}} \
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expected-modules-error{{implicitly declaring library function}} expected-modules-note{{provide a declaration}}
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}
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//--- stdargneeds3.c
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#define __need_va_list
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#define __need_va_arg
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#include <stdarg.h>
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static void f(int p, ...) {
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__gnuc_va_list g; // expected-error{{undeclared identifier}} \
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expected-modules-error{{'__gnuc_va_list' must be declared before it is used}} expected-modules-note@__stdarg___gnuc_va_list.h:*{{declaration here is not visible}}
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va_list v;
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va_start(v, p);
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int i = va_arg(v, int);
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va_end(v);
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__va_copy(g, v); // expected-error{{implicit declaration of function}} expected-error{{undeclared identifier}} \
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expected-modules-error{{implicit declaration of function}}
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va_copy(g, v); // expected-error{{implicitly declaring library function}} expected-note{{provide a declaration}} expected-error{{undeclared identifier}} \
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expected-modules-error{{implicitly declaring library function}} expected-modules-note{{provide a declaration}}
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}
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//--- stdargneeds4.c
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#define __need___va_list
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#define __need_va_list
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#define __need___va_copy
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#include <stdarg.h>
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static void f(int p, ...) {
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__gnuc_va_list g;
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va_list v;
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va_start(v, p); // expected-error{{implicitly declaring library function}} expected-note{{provide a declaration}} \
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expected-modules-error{{implicitly declaring library function}} expected-modules-note{{provide a declaration}}
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int i = va_arg(v, int); // expected-error{{implicit declaration of function}} expected-error{{expected expression}} \
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expected-modules-error{{implicit declaration of function}} expected-modules-error{{expected expression}}
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va_end(v); // expected-error{{implicitly declaring library function}} expected-note{{provide a declaration}} \
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expected-modules-error{{implicitly declaring library function}} expected-modules-note{{provide a declaration}}
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__va_copy(g, v);
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va_copy(g, v); // expected-error{{implicitly declaring library function}} expected-note{{provide a declaration}} \
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expected-modules-error{{implicitly declaring library function}} expected-modules-note{{provide a declaration}}
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}
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//--- stdargneeds5.c
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#define __need___va_list
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#define __need_va_list
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#define __need_va_copy
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#include <stdarg.h>
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static void f(int p, ...) {
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__gnuc_va_list g;
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va_list v;
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va_start(v, p); // expected-error{{implicitly declaring library function}} expected-note{{provide a declaration}} \
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expected-modules-error{{implicitly declaring library function}} expected-modules-note{{provide a declaration}}
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int i = va_arg(v, int); // expected-error{{implicit declaration of function}} expected-error{{expected expression}} \
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expected-modules-error{{implicit declaration of function}} expected-modules-error{{expected expression}}
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va_end(v); // expected-error{{implicitly declaring library function}} expected-note{{provide a declaration}} \
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expected-modules-error{{implicitly declaring library function}} expected-modules-note{{provide a declaration}}
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__va_copy(g, v); // expected-error{{implicit declaration of function}} expected-modules-error{{implicit declaration of function}}
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va_copy(g, v);
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}
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