https://gcc.gnu.org/bugzilla/show_bug.cgi?id=93711
--- Comment #7 from Boris Staletic <boris.staletic at gmail dot com> --- I don't know if this is the same problem, since the actual `std::istream_iterator<int>` isn't empty, unlike in the other test cases. If the following is a different problem, sorry up front for the noise. https://godbolt.org/z/XAM9o7 This is the actual thing I've come across during a pull request for NanoRange library. DIfferences from the above test cases: - ICE is there even at `-Og`, as well as `-O0` - The bottom example shows that wrapping the call to `fn()` in `std::move()` avoids the ICE. If this is a separate issue and thus noise, I'll open a separate issue.
