From bc457f682ce517c38fa31df48d8d3c13dccd221b Mon Sep 17 00:00:00 2001
From: Dilum Aluthge <dilum@aluthge.com>
Date: Mon, 22 Aug 2022 10:34:14 -0400
Subject: [PATCH] Fix `deepcopy` for `Base.GenericCondition` (#46406)

(cherry picked from commit 99e8953c0fcb626d643207650381f1e3fbff76e2)
---
 base/deepcopy.jl |  2 +-
 test/copy.jl     | 16 ++++++++++++++++
 2 files changed, 17 insertions(+), 1 deletion(-)

diff --git a/base/deepcopy.jl b/base/deepcopy.jl
index 317d999004c42..74c9d2b49c123 100644
--- a/base/deepcopy.jl
+++ b/base/deepcopy.jl
@@ -140,7 +140,7 @@ function deepcopy_internal(x::GenericCondition, stackdict::IdDict)
     if haskey(stackdict, x)
         return stackdict[x]
     end
-    y = typeof(x)(deepcopy_internal(x.lock))
+    y = typeof(x)(deepcopy_internal(x.lock, stackdict))
     stackdict[x] = y
     return y
 end
diff --git a/test/copy.jl b/test/copy.jl
index c4fcff40f2b3f..633beee5f2af3 100644
--- a/test/copy.jl
+++ b/test/copy.jl
@@ -252,3 +252,19 @@ end
     a = [1:3;]
     @test copyto!(a, 2:3, 1:1, a, 1:2, 1:1) == [1;1:2;]
 end
+
+@testset "`deepcopy` a `GenericCondition`" begin
+    a = Base.GenericCondition(ReentrantLock())
+    @test !islocked(a.lock)
+    lock(a.lock)
+    @test islocked(a.lock)
+    b = deepcopy(a)
+    @test typeof(a) === typeof(b)
+    @test a != b
+    @test a !== b
+    @test typeof(a.lock) === typeof(b.lock)
+    @test a.lock != b.lock
+    @test a.lock !== b.lock
+    @test islocked(a.lock)
+    @test !islocked(b.lock)
+end