9c04851cf5
This patch introduces a new kind of ModuleOwnershipKind as ReachableWhenImported. This intended the status for reachable described at: https://eel.is/c++draft/module.reach#3. Note that this patch is not intended to support all semantics about reachable semantics. For example, this patch didn't implement discarded declarations in GMF. (https://eel.is/c++draft/module.global.frag#3). This fixes: https://bugs.llvm.org/show_bug.cgi?id=52281 and https://godbolt.org/z/81f3ocjfW. Reviewed By: rsmith, iains Differential Revision: https://reviews.llvm.org/D113545
71 lines
2.1 KiB
C++
71 lines
2.1 KiB
C++
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// 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: %clang_cc1 -std=c++20 -emit-module-interface %t/std10-1-ex2-tu1.cpp \
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// RUN: -o %t/B_Y.pcm
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// RUN: %clang_cc1 -std=c++20 -emit-module-interface %t/std10-1-ex2-tu2.cpp \
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// RUN: -fmodule-file=%t/B_Y.pcm -o %t/B.pcm
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// RUN: %clang_cc1 -std=c++20 -emit-module-interface %t/std10-1-ex2-tu3.cpp \
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// RUN: -o %t/B_X1.pcm -verify
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// RUN: %clang_cc1 -std=c++20 -emit-module-interface %t/std10-1-ex2-tu4.cpp \
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// RUN:-fmodule-file=%t/B.pcm -o %t/B_X2.pcm
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// RUN: %clang_cc1 -std=c++20 -emit-obj %t/std10-1-ex2-tu5.cpp \
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// RUN: -fmodule-file=%t/B.pcm -o %t/b_tu5.o
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// RUN: %clang_cc1 -std=c++20 -S %t/std10-1-ex2-tu6.cpp \
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// RUN: -fmodule-file=%t/B.pcm -o %t/b_tu6.s -verify
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// RUN: %clang_cc1 -std=c++20 -emit-module-interface %t/std10-1-ex2-tu7.cpp \
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// RUN: -fmodule-file=%t/B_X2.pcm -o %t/B_X3.pcm -verify
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//--- std10-1-ex2-tu1.cpp
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module B:Y;
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int y();
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// expected-no-diagnostics
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//--- std10-1-ex2-tu2.cpp
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export module B;
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import :Y;
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int n = y();
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// expected-no-diagnostics
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//--- std10-1-ex2-tu3.cpp
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module B:X1; // does not implicitly import B
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int &a = n; // expected-error {{use of undeclared identifier }}
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//--- std10-1-ex2-tu4.cpp
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module B:X2; // does not implicitly import B
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import B;
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int &b = n; // OK
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// expected-no-diagnostics
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//--- std10-1-ex2-tu5.cpp
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module B; // implicitly imports B
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int &c = n; // OK
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// expected-no-diagnostics
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//--- std10-1-ex2-tu6.cpp
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import B;
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// error, n is module-local and this is not a module.
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int &c = n; // expected-error {{declaration of 'n' must be imported}}
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// expected-note@* {{declaration here is not visible}}
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//--- std10-1-ex2-tu7.cpp
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// expected-no-diagnostics
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module B:X3; // does not implicitly import B
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import :X2; // X2 is an implementation unit import B.
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// According to [module.import]p7:
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// Additionally, when a module-import-declaration in a module unit of some
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// module M imports another module unit U of M, it also imports all
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// translation units imported by non-exported module-import-declarations in
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// the module unit purview of U.
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//
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// So B is imported in B:X3 due to B:X2 imported B. So n is visible here.
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int &c = n;
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