7a28a5b3fe
Prevent OOB access by not printing target parameter range when there's a pack in the function parameters. Fixes https://github.com/llvm/llvm-project/issues/93076. Fixes https://github.com/llvm/llvm-project/issues/76354. Fixes https://github.com/llvm/llvm-project/issues/70191.
71 lines
2.1 KiB
C++
71 lines
2.1 KiB
C++
// RUN: %clang_cc1 -fsyntax-only -verify %s
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// RUN: %clang_cc1 -std=c++23 -verify -fsyntax-only %s
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enum copy_traits { movable = 1 };
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template <int>
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struct optional_ctor_base {};
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template <typename T>
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struct ctor_copy_traits {
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// this would produce a c++98-compat warning, which would erroneously get the
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// no-matching-function-call error's notes attached to it (or suppress those
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// notes if this diagnostic was suppressed, as it is in this case)
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static constexpr int traits = copy_traits::movable;
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};
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template <typename T>
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struct optional : optional_ctor_base<ctor_copy_traits<T>::traits> {
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template <typename U>
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constexpr optional(U&& v);
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};
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struct A {};
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struct XA {
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XA(const A&);
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};
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struct B {};
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struct XB {
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XB(const B&);
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XB(const optional<B>&);
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};
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struct YB : XB {
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using XB::XB;
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};
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void InsertRow(const XA&, const YB&); // expected-note {{candidate function not viable: no known conversion from 'int' to 'const XA' for 1st argument}}
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void ReproducesBugSimply() {
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InsertRow(3, B{}); // expected-error {{no matching function for call to 'InsertRow'}}
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}
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#if __cplusplus >= 202302L
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namespace overloadCheck{
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template<typename T>
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concept AlwaysTrue = true;
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struct S {
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int f(AlwaysTrue auto) { return 1; }
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void f(this S&&, auto) {}
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void g(auto) {}
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int g(this S&&,AlwaysTrue auto) {return 1;}
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int h(AlwaysTrue auto) { return 1; } //expected-note {{previous definition is here}}
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int h(this S&&,AlwaysTrue auto) { // expected-error {{class member cannot be redeclared}}
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return 1;
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}
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};
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int main() {
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int x = S{}.f(0);
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int y = S{}.g(0);
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}
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}
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#endif
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namespace GH93076 {
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template <typename ...a> int b(a..., int); // expected-note-re 3 {{candidate function template not viable: no known conversion from 'int ()' to 'int' for {{.*}} argument}}
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int d() {
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(void)b<int, int>(0, 0, d); // expected-error {{no matching function for call to 'b'}}
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(void)b<int, int>(0, d, 0); // expected-error {{no matching function for call to 'b'}}
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(void)b<int, int>(d, 0, 0); // expected-error {{no matching function for call to 'b'}}
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return 0;
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}
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}
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