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Add regression test for PR41576 (which is already fixed in trunk, 

perhaps by r361300).

llvm-svn: 364340
This commit is contained in:
Richard Smith 2019-06-25 18:42:53 +00:00
parent 4be636ebb3
commit 30519a68d5
1 changed files with 9 additions and 1 deletions
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10
clang/test/SemaTemplate/lambda-capture-pack.cpp
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@ -1,5 +1,4 @@
// RUN: %clang_cc1 -std=c++2a -verify %s // RUN: %clang_cc1 -std=c++2a -verify %s
// expected-no-diagnostics
template<typename ...T, typename ...Lambda> void check_sizes(Lambda ...L) { template<typename ...T, typename ...Lambda> void check_sizes(Lambda ...L) {
static_assert(((sizeof(T) == sizeof(Lambda)) && ...)); static_assert(((sizeof(T) == sizeof(Lambda)) && ...));
@ -15,3 +14,12 @@ template<typename ...T> void f(T ...v) {
} }
template void f(int, char, double); template void f(int, char, double);
namespace PR41576 {
template <class... Xs> constexpr int f(Xs ...xs) {
return [&](auto ...ys) { // expected-note {{instantiation}}
return ((xs + ys), ...); // expected-warning {{unused}}
}(1, 2);
}
static_assert(f(3, 4) == 6); // expected-note {{instantiation}}
}