From ef7bf2e7f41b6ce9121de6198ec87aa71477e153 Mon Sep 17 00:00:00 2001
From: Jacob Quinn <quinn.jacobd@gmail.com>
Date: Fri, 2 Apr 2021 11:38:47 -0600
Subject: [PATCH] Fix #40318 by using UInt to convert instead of Int on Ptr

(cherry picked from commit 0d9163b561a5f809b895b9cd8893d1a010197284)
---
 stdlib/Printf/src/Printf.jl    | 2 +-
 stdlib/Printf/test/runtests.jl | 3 +++
 2 files changed, 4 insertions(+), 1 deletion(-)

diff --git a/stdlib/Printf/src/Printf.jl b/stdlib/Printf/src/Printf.jl
index ac57f95ec6bb96..2b620873bd61a1 100644
--- a/stdlib/Printf/src/Printf.jl
+++ b/stdlib/Printf/src/Printf.jl
@@ -547,7 +547,7 @@ const __BIG_FLOAT_MAX__ = 8192
 end
 
 # pointers
-fmt(buf, pos, arg, spec::Spec{Pointer}) = fmt(buf, pos, Int(arg), ptrfmt(spec, arg))
+fmt(buf, pos, arg, spec::Spec{Pointer}) = fmt(buf, pos, UInt(arg), ptrfmt(spec, arg))
 
 # old Printf compat
 function fix_dec end
diff --git a/stdlib/Printf/test/runtests.jl b/stdlib/Printf/test/runtests.jl
index c74739d66ba514..f6645464b47978 100644
--- a/stdlib/Printf/test/runtests.jl
+++ b/stdlib/Printf/test/runtests.jl
@@ -19,6 +19,9 @@ using Test, Printf
         @test (@sprintf "%-20p" C_NULL) == "0x00000000          "
     end
 
+    #40318
+    @test @sprintf("%p", 0xfffffffffffe0000) == "0xfffffffffffe0000"
+
 end
 
 @testset "%a" begin