From 3b9f02fa97ecd118aba0fcedf38815ca0267ac60 Mon Sep 17 00:00:00 2001
From: Jeff Bezanson <jeff.bezanson@gmail.com>
Date: Thu, 14 Jan 2021 17:45:57 -0500
Subject: [PATCH] fix #39259, leave `Main.ARGS` unresolved on startup

---
 contrib/generate_precompile.jl | 2 +-
 test/cmdlineargs.jl            | 3 +++
 2 files changed, 4 insertions(+), 1 deletion(-)

diff --git a/contrib/generate_precompile.jl b/contrib/generate_precompile.jl
index 1572e81aa2b75..d17123d70105a 100644
--- a/contrib/generate_precompile.jl
+++ b/contrib/generate_precompile.jl
@@ -1,6 +1,6 @@
 # This file is a part of Julia. License is MIT: https://julialang.org/license
 
-if isempty(ARGS) || ARGS[1] !== "0"
+if isempty(Base.ARGS) || Base.ARGS[1] !== "0"
 Sys.__init_build()
 # Prevent this from being put into the Main namespace
 @eval Module() begin
diff --git a/test/cmdlineargs.jl b/test/cmdlineargs.jl
index 300883773099b..51051f379f496 100644
--- a/test/cmdlineargs.jl
+++ b/test/cmdlineargs.jl
@@ -719,3 +719,6 @@ for yn in ("no", "yes")
     end
     @test v[2]
 end
+
+# issue #39259, shadowing `ARGS`
+@test success(`$(Base.julia_cmd()) --startup-file=no -e 'ARGS=1'`)