forked from OSchip/llvm-project
55 lines
1.4 KiB
C++
55 lines
1.4 KiB
C++
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// Based on C++20 10.2 example 5.
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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/std-10-2-ex5-tu1.cpp \
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// RUN: -o %t/M.pcm
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// RUN: %clang_cc1 -std=c++20 -emit-obj %t/std-10-2-ex5-tu2.cpp \
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// RUN: -fmodule-file=%t/M.pcm -o %t/tu-2.o
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// RUN: %clang_cc1 -std=c++20 -emit-obj %t/std-10-2-ex5-tu3.cpp \
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// RUN: -fmodule-file=%t/M.pcm -verify -o %t/main.o
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//--- std-10-2-ex5-tu1.cpp
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export module M;
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export struct X {
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static void f();
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struct Y {};
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};
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namespace {
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struct S {};
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} // namespace
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export void f(S); // OK
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struct T {};
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export T id(T); // OK
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export struct A; // A exported as incomplete
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export auto rootFinder(double a) {
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return [=](double x) { return (x + a / x) / 2; };
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}
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export const int n = 5; // OK, n has external linkage
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//--- std-10-2-ex5-tu2.cpp
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module M;
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struct A {
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int value;
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};
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//--- std-10-2-ex5-tu3.cpp
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import M;
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int main() {
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X::f(); // OK, X is exported and definition of X is reachable
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X::Y y; // OK, X::Y is exported as a complete type
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auto f = rootFinder(2); // OK
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// error: A is incomplete
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return A{45}.value; // expected-error {{invalid use of incomplete type 'A'}}
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// expected-error@-1 {{member access into incomplete type 'A'}}
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// expected-note@std-10-2-ex5-tu1.cpp:12 2{{forward declaration of 'A'}}
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}
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