From 472d798dc1c0a7804b54c67b485e134fe097a57e Mon Sep 17 00:00:00 2001
From: Jed Davis <jld@panix.com>
Date: Sun, 20 Oct 2013 11:13:41 -0700
Subject: [PATCH] Work around const_eval issues by changing signed integer
 `min_value`s.

Otherwise, run-pass/deriving-primitive.rs breaks on 32-bit platforms,
because `int::min_value` is `0xffffffff7fffffff` when evaluated for the
discriminant declaration.
---
 src/libstd/num/int_macros.rs | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/src/libstd/num/int_macros.rs b/src/libstd/num/int_macros.rs
index 694e5e7f6bf..ba1a7a4f912 100644
--- a/src/libstd/num/int_macros.rs
+++ b/src/libstd/num/int_macros.rs
@@ -29,7 +29,8 @@ pub static bits : uint = $bits;
 pub static bytes : uint = ($bits / 8);
 
 pub static min_value: $T = (-1 as $T) << (bits - 1);
-pub static max_value: $T = min_value - 1 as $T;
+// FIXME(#9837): Compute min_value like this so the high bits that shouldn't exist are 0.
+pub static max_value: $T = !min_value;
 
 impl CheckedDiv for $T {
     #[inline]