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// RUN: rm -fr %t
// RUN: mkdir %t
// RUN: split-file %s %t
//
// RUN: %clang_cc1 -std=c++20 -emit-module-interface %t/foo.cppm -o %t/foo.pcm
// RUN: %clang_cc1 -std=c++20 -fprebuilt-module-path=%t %t/Use.cpp -verify -fsyntax-only
// RUN: %clang_cc1 -std=c++20 -emit-reduced-module-interface %t/foo.cppm -o %t/foo.pcm
// RUN: %clang_cc1 -std=c++20 -fprebuilt-module-path=%t %t/Use.cpp -verify -fsyntax-only -DREDUCED
//--- foo.cppm
module;
# 3 __FILE__ 1 // use the next physical line number here (and below)
template <typename T>
void foo() {
}
template <>
void foo<int>() {
}
template <typename T>
void foo2() {
}
template <>
void foo2<int>() {
}
template <typename T>
void foo3() {
}
template <>
void foo3<int>();
export module foo;
export using ::foo;
export using ::foo3;
export template <typename T>
void foo4() {
}
export template <>
void foo4<int>() {
}
//--- Use.cpp
import foo;
void use() {
foo<short>();
foo<int>();
#ifdef REDUCED
// In reduced BMI, the foo2 template function is optimized out.
foo2<short>(); // expected-error {{use of undeclared identifier 'foo2'}}
foo2<int>(); // expected-error {{use of undeclared identifier 'foo2'}}
#else
foo2<short>(); // expected-error {{missing '#include'; 'foo2' must be declared before it is used}}
// expected-note@* {{declaration here is not visible}}
foo2<int>(); // expected-error {{missing '#include'; 'foo2' must be declared before it is used}}
// expected-note@* {{declaration here is not visible}}
#endif
foo3<short>();
foo3<int>();
foo4<short>();
foo4<int>();
}
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