https://gcc.gnu.org/bugzilla/show_bug.cgi?id=86740
Michal Urbanczyk <michal.w.urbanczyk at gmail dot com> changed:
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CC| |michal.w.urbanczyk at gmail
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--- Comment #4 from Michal Urbanczyk <michal.w.urbanczyk at gmail dot com> ---
I have encountered a similar issue without using Boost.Hana. My code worked
with GCC 7.3 and stopped compiling with GCC 8.1.
The reduced testcase:
struct Constant
{
static constexpr int value = 0;
};
template<typename F>
void invokeWithConstant(F &&f)
{
f(Constant{});
}
int foo()
{
int count = 0;
invokeWithConstant([&] (auto id1)
{
invokeWithConstant([&] (auto id2)
{
if constexpr(id1.value == 0 && id2.value == 0)
{
[&] { count = 1; } ();
}
});
});
return count;
}
====
Can be tested online at https://godbolt.org/z/N5rNYl
My case yields ICE from the very same line.
