[clang] NFC: add a few template template parameter test cases #160230
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@llvm/pr-subscribers-clang Author: Matheus Izvekov (mizvekov) ChangesI also posted these on the core reflector today. Full diff: https://github.com/llvm/llvm-project/pull/160230.diff 2 Files Affected:
diff --git a/clang/test/SemaTemplate/cwg2398.cpp b/clang/test/SemaTemplate/cwg2398.cpp
index 06333c81a603e..315fa952932c5 100644
--- a/clang/test/SemaTemplate/cwg2398.cpp
+++ b/clang/test/SemaTemplate/cwg2398.cpp
@@ -672,3 +672,22 @@ namespace nttp_partial_order {
template void f<B>(B<nullptr>);
} // namespace t6
} // namespace nttp_partial_order
+
+namespace nttp_inconsistent {
+ namespace t1 {
+ template<class A, A B> struct X {};
+ // expected-error@-1 {{conflicting deduction 'C' against 'int' for parameter}}
+ template<template<class C, int D> class TT> struct Y {};
+ // expected-note@-1 {{previous template template parameter is here}}
+ template struct Y<X>;
+ // expected-note@-1 {{has different template parameters}}
+ } // namespace t1
+ namespace t2 {
+ template<class A, A B = 0> struct X {};
+ // expected-error@-1 {{conflicting deduction 'C' against 'int' for parameter}}
+ template<template<class C> class TT> struct Y {};
+ // expected-note@-1 {{previous template template parameter is here}}
+ template struct Y<X>;
+ // expected-note@-1 {{has different template parameters}}
+ } // namespace t2
+} // namespace nttp_inconsistent
diff --git a/clang/test/SemaTemplate/temp_arg_template.cpp b/clang/test/SemaTemplate/temp_arg_template.cpp
index c9576e2057e53..3d71061f9cfd5 100644
--- a/clang/test/SemaTemplate/temp_arg_template.cpp
+++ b/clang/test/SemaTemplate/temp_arg_template.cpp
@@ -168,3 +168,28 @@ namespace PR10147 {
template<template<typename...> class A> void f(A<int>*) { A<> a; } // expected-warning 0-1{{extension}}
void g() { f((A<>*)0); }
}
+
+namespace multiple_conversions {
+ constexpr int g = 1;
+ struct Z {
+ constexpr operator const int&() const { return g; }
+ constexpr operator int() { return 2; }
+ } z;
+
+ template<template<const int&> class TT> struct A {
+ // precxx17-note@-1 {{template parameter is declared here}}
+ static constexpr int value = TT<z>::value;
+ // precxx17-error@-1 {{'const int &' cannot bind to template argument of type 'struct Z'}}
+ // FIXME: Bad error recovery.
+ // precxx17-error@-3 {{requires an initializer}}
+ };
+
+ template<int I> struct B {
+ static constexpr int value = I;
+ };
+ // FIXME: This should probably convert z to (const int &) first, then
+ // convert that to int.
+ static_assert(A<B>::value == 1);
+ // cxx17-error@-1 {{static assertion failed}}
+ // cxx17-note@-2 {{expression evaluates to '2 == 1'}}
+} // namespace multiple_conversions
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I also posted these on the core reflector today.
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LLVM Buildbot has detected a new failure on builder Full details are available at: https://lab.llvm.org/buildbot/#/builders/72/builds/15183 Here is the relevant piece of the build log for the reference |
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LLVM Buildbot has detected a new failure on builder Full details are available at: https://lab.llvm.org/buildbot/#/builders/95/builds/18375 Here is the relevant piece of the build log for the reference |
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I also posted these on the core reflector today.