BillyONeal added subscribers: STL_MSFT, BillyONeal.
BillyONeal added a comment.
@mclow.lists
@STL_MSFT
Why did tests for this this go into std? [reentrancy]/1 says this isn't
required to work. Moreover, assignments in the dtor like this *can't* work in
the general case because they would try to overwrite the SSO space. e.g. what
do you expect this to do?
std::function<void()> global;
struct B {
int data = 1729;
void operator() {}
};
struct A {
int data = 42;
~A() {
global = std::function<void()>(B{}); // whoops, constructs a B on top
of A if Small Functor Optimization engages
assert(data == 42);
}
void operator() {}
};
int main() {
global = std::function<void ()>(A{});
global = nullptr;
}
Repository:
rCXX libc++
https://reviews.llvm.org/D34331
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