forked from OSchip/llvm-project
39 lines
887 B
C++
39 lines
887 B
C++
// RUN: %clang_cc1 -std=c++17 -fsyntax-only -verify %s
|
|
|
|
// expected-no-diagnostics
|
|
|
|
// Check recursive instantiation of lambda does not cause assertion.
|
|
// lambda function `f` in `fun1` is instantiated twice: first
|
|
// as f(f, Number<1>), then as f(f, Number<0>). The
|
|
// LocalInstantiationScopes of these two instantiations both contain
|
|
// `f` and `i`. However, since they are not merged, clang should not
|
|
// assert for that.
|
|
|
|
template <unsigned v>
|
|
struct Number
|
|
{
|
|
static constexpr unsigned value = v;
|
|
};
|
|
|
|
template <unsigned IBegin = 0,
|
|
unsigned IEnd = 1>
|
|
constexpr auto fun1(Number<IBegin> = Number<0>{}, Number<IEnd> = Number<1>{})
|
|
{
|
|
constexpr unsigned a = 0;
|
|
auto f = [&](auto fs, auto i) {
|
|
if constexpr(i.value > 0)
|
|
{
|
|
(void)a;
|
|
return fs(fs, Number<IBegin>{});
|
|
}
|
|
(void)a;
|
|
};
|
|
|
|
return f(f, Number<IEnd>{});
|
|
}
|
|
|
|
|
|
void fun2() {
|
|
fun1();
|
|
}
|