[libcxx-commits] [libcxx] [libc++] Throw future_error in future.get() (PR #179409)

[Louis Dionne via libcxx-commits]

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@@ -985,6 +985,9 @@ future<_Rp>::~future() {
 
 template <class _Rp>
 _Rp future<_Rp>::get() {
+  if (__state_ == nullptr) [[unlikely]] {
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ldionne wrote:

```suggestion
  if (__state_ == nullptr) [[__unlikely__]] {
```

https://github.com/llvm/llvm-project/pull/179409