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let EST_Uninstantiated in FunctionProtoType::canThrow return
CT_Dependent When compile following code without -std=c++17, clang will abort by llvm_unreachable: class A { public: static const char X; }; const char A::X = 0; template<typename U> void func() noexcept(U::X); template<class... B, char x> void foo(void(B...) noexcept(x)) {} void bar() { foo(func<A>); } So, my solution is to let EST_Uninstantiated in FunctionProtoType::canThrow return CT_Dependent Differential Revision: https://reviews.llvm.org/D121498
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// RUN: %clang_cc1 -verify %s | ||
// RUN: %clang_cc1 -std=c++11 -verify %s | ||
// RUN: %clang_cc1 -std=c++17 -verify %s | ||
// RUN: %clang_cc1 -std=c++1z -verify %s | ||
#if __cplusplus >= 201703 | ||
// expected-no-diagnostics | ||
#endif | ||
class A { | ||
public: | ||
static const char X; | ||
}; | ||
const char A::X = 0; | ||
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template<typename U> void func() noexcept(U::X); | ||
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template<class... B, char x> | ||
#if __cplusplus >= 201703 | ||
void foo(void(B...) noexcept(x)) {} | ||
#else | ||
void foo(void(B...) noexcept(x)) {} // expected-note{{candidate template ignored}} | ||
#endif | ||
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void bar() | ||
{ | ||
#if __cplusplus >= 201703 | ||
foo(func<A>); | ||
#else | ||
foo(func<A>); // expected-error{{no matching function for call}} | ||
#endif | ||
} | ||
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