Merge 2025-06 LWG Motion 34

P3552R3 Add a Coroutine Task

Author: tkoeppe

source/exceptions.tex

@@ -1141,7 +1141,11 @@
 \item%
 when \tcode{std::execution::get_parallel_scheduler} is called and
 \tcode{std::execution::system_context_replace\-ability::query_parallel_scheduler_backend()}
-returns a null pointer value\iref{exec.par.scheduler}.
+returns a null pointer value\iref{exec.par.scheduler}, or
+
+\item%
+when an exception is thrown from a coroutine \tcode{std::execution::task}\iref{exec.task}
+which doesn't support a \tcode{std::execution::set_error_t(std::exception_ptr)} completion.
 \end{itemize}
 \end{note}