From 36ace5430d5b54ec3f7045b980002fe2f600e508 Mon Sep 17 00:00:00 2001
From: Nathan Daly <nathan.daly@relational.ai>
Date: Tue, 25 Apr 2023 21:14:02 -0600
Subject: [PATCH] Nospecialize close(c::Channel, excp::Exception) on excp.

Fixes https://github.com/JuliaLang/julia/issues/49507.

Avoids dynamic dispatch when closing a Channel with an Exception, and
should avoid a call into the runtime for julia compilation when
attempting to report an exception.
---
 base/channels.jl | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/base/channels.jl b/base/channels.jl
index aa4d913dcdadd..07f1975bcee81 100644
--- a/base/channels.jl
+++ b/base/channels.jl
@@ -183,7 +183,7 @@ Close a channel. An exception (optionally given by `excp`), is thrown by:
 * [`put!`](@ref) on a closed channel.
 * [`take!`](@ref) and [`fetch`](@ref) on an empty, closed channel.
 """
-function close(c::Channel, excp::Exception=closed_exception())
+function close(c::Channel, @nospecialize(excp::Exception=closed_exception()))
     lock(c)
     try
         c.excp = excp