xref: /llvm-project/clang/test/Modules/deduction-guide.cppm (revision da00c60dae0040185dc45039c4397f6e746548e9)
1// RUN: rm -rf %t
2// RUN: mkdir %t
3// RUN: split-file %s %t
4//
5// RUN: %clang_cc1 -std=c++20 %t/Templ.cppm -emit-module-interface -o %t/Templ.pcm
6// RUN: %clang_cc1 -std=c++20 -fprebuilt-module-path=%t %t/Use.cpp -verify -fsyntax-only
7
8// RUN: %clang_cc1 -std=c++20 %t/Templ.cppm -emit-reduced-module-interface -o %t/Templ.pcm
9// RUN: %clang_cc1 -std=c++20 -fprebuilt-module-path=%t %t/Use.cpp -verify -fsyntax-only
10
11//--- foo.h
12template <typename T>
13class Templ {
14public:
15    Templ(T a) {}
16};
17
18template<typename T>
19Templ(T t) -> Templ<T>;
20
21//--- Templ.cppm
22module;
23#include "foo.h"
24export module Templ;
25export using ::Templ;
26
27//--- Use.cpp
28// expected-no-diagnostics
29import Templ;
30void func() {
31    Templ t(5);
32}
33
34