fc89e9044d
Currently, the header units are rarely used and it is not well tested. To avoid further misunderstandings, let's mark it as experimental and emit a warning when users wants to import it. This is discussed in modules developers meeting.
111 lines
2.7 KiB
C++
111 lines
2.7 KiB
C++
// RUN: rm -rf %t
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// RUN: mkdir -p %t
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// RUN: split-file %s %t
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// RUN: cd %t
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//
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// RUN: %clang_cc1 -std=c++20 -xc++-user-header h1.h -emit-header-unit -o h1.pcm
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// RUN: %clang_cc1 -std=c++20 -xc++-user-header h2.h -emit-header-unit -o h2.pcm
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// RUN: %clang_cc1 -std=c++20 -xc++-user-header h3.h -emit-header-unit -o h3.pcm
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// RUN: %clang_cc1 -std=c++20 -xc++-user-header h4.h -emit-header-unit -o h4.pcm
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// RUN: %clang_cc1 -std=c++20 Xlate.cpp -emit-module-interface -o Xlate.pcm \
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// RUN: -fmodule-file=h1.pcm -fmodule-file=h2.pcm -fmodule-file=h3.pcm \
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// RUN: -fmodule-file=h4.pcm -fsyntax-only -Rmodule-include-translation -verify
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// Check that we do the intended translation and not more.
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// RUN: %clang_cc1 -std=c++20 Xlate.cpp \
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// RUN: -fmodule-file=h1.pcm -fmodule-file=h2.pcm -fmodule-file=h3.pcm \
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// RUN: -fmodule-file=h4.pcm -E -undef | FileCheck %s
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// We expect no diagnostics here, the used functions should all be available.
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// RUN: %clang_cc1 -std=c++20 Xlate.cpp -emit-module-interface \
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// RUN: -fmodule-file=h1.pcm -fmodule-file=h2.pcm -fmodule-file=h3.pcm \
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// RUN: -fmodule-file=h4.pcm -fsyntax-only
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// The content of the headers is not terribly important, we just want to check
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// whether they are textually included or include-translated.
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//--- h1.h
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#ifndef H1_GUARD
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#define H1_GUARD
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#define ONE 1
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void foo();
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#endif // H1_GUARD
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//--- h2.h
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#ifndef H2_GUARD
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#define H2_GUARD
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#define TWO 2
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void bar();
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#endif // H2_GUARD
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//--- h3.h
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#ifndef H3_GUARD
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#define H3_GUARD
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#define THREE 3
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void baz();
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#endif // H3_GUARD
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//--- h4.h
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#ifndef H4_GUARD
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#define H4_GUARD
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#define FOUR 4
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void boo();
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#endif // H4_GUARD
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//--- h5.h
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#ifndef H5_GUARD
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#define H5_GUARD
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#define FIVE 5
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void five();
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#endif // H4_GUARD
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//--- Xlate.cpp
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/* some comment ...
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... */
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module /*nothing here*/;
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// This should be include-translated, when the header unit for h1 is available.
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// expected-warning@+1 {{the implementation of header units is in an experimental phase}}
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#include "h1.h" // expected-remark {{treating #include as an import of module './h1.h'}}
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// Import of a header unit is allowed, named modules are not.
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import "h2.h"; // expected-warning {{the implementation of header units is in an experimental phase}}
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// A regular, untranslated, header
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#include "h5.h"
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export module Xlate;
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// This is OK, the import immediately follows the module decl.
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import "h3.h"; // expected-warning {{the implementation of header units is in an experimental phase}}
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// This should *not* be include-translated, even if header unit for h4 is
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// available.
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#include "h4.h"
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export void charlie() {
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foo();
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bar();
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baz();
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boo();
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five();
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}
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// CHECK: #pragma clang module import "./h1.h"
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// CHECK: import ./h2.h
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// CHECK: import ./h3.h
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// CHECK-NOT: #pragma clang module import "./h4.h"
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