33 lines
983 B
C++
33 lines
983 B
C++
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// RUN: rm -rf %t
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// RUN: %clang_cc1 -x c++ -I %S/Inputs/redecl-templates %s -verify -std=c++14
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// RUN: %clang_cc1 -x c++ -fmodules -fimplicit-module-maps -fmodules-cache-path=%t -I %S/Inputs/redecl-templates %s -verify -std=c++14
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// expected-no-diagnostics
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template<int N> struct A {};
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template<int N> using X = A<N>;
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template<int N> constexpr void f() {}
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template<int N> constexpr void g() { f<N>(); }
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template<int N> extern int v;
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template<int N> int &w = v<N>;
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#include "a.h"
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// Be careful not to mention A here, that'll import the decls from "a.h".
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int g(X<1> *);
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X<1> *p = 0;
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// This will implicitly instantiate A<1> if we haven't imported the explicit
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// specialization declaration from "a.h".
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int k = g(p);
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// Likewise for f and v.
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void h() { g<1>(); }
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int &x = w<1>;
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// This is OK: we declared the explicit specialization before we triggered
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// instantiation of this specialization.
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template<> struct A<1> {};
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template<> constexpr void f<1>() {}
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template<> int v<1>;
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