f1fed12452
In some cases where ill-formed code could be interpreted as a deduction guide we can crash because we reach an unreachable path. This fixes this issue by introducing a diagnostic instead. Fixes: https://github.com/llvm/llvm-project/issues/65522
12 lines
661 B
C++
12 lines
661 B
C++
// RUN: %clang_cc1 -std=c++20 -Wc++17-compat -verify -Wno-unused %s
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class X {};
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template<typename T>
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class B3 { // expected-note {{candidate template ignored: could not match 'B3<T>' against 'int'}}
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template<X x> B3(T); // expected-warning 2{{non-type template parameter of type 'X' is incompatible with C++ standards before C++20}} \
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// expected-note {{candidate template ignored: couldn't infer template argument 'x'}}
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};
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B3 b3 = 0; // expected-error {{no viable constructor or deduction guide for deduction of template arguments of 'B3'}} \
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// expected-note {{while building implicit deduction guide first needed here}}
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