fix tests on BE arches

Signed-off-by: Igor Gnatenko <ignatenkobrain@fedoraproject.org>

0001-Fix-prop_ext_-u-int_-native_endian-on-BE-targets.patch

@@ -0,0 +1,52 @@
+From 403638e8d7ca2b0cd24034976c7a164bbd15b4dd Mon Sep 17 00:00:00 2001
+From: Josh Stone <jistone@redhat.com>
+Date: Mon, 13 Nov 2017 11:26:47 -0800
+Subject: [PATCH] Fix prop_ext_[u]int_*::native_endian on BE targets
+
+The similar `big_endian` tests were using an offset to read from the
+end of the written `u64`, but the `native_endian` tests were reading
+directly, just like the `little_endian` tests.  That's of course only
+correct when the target actually is little endian.
+
+That `big_endian` offset is now sliced directly, instead of cloning into
+another vector, and then this logic is also used in the `native_endian`
+test, depending on the current `#[cfg(target_endian)]`.
+
+Fixes #102.
+---
+ src/lib.rs | 12 ++++++++----
+ 1 file changed, 8 insertions(+), 4 deletions(-)
+
+diff --git a/src/lib.rs b/src/lib.rs
+index b60fe7c..35c0069 100644
+--- a/src/lib.rs
++++ b/src/lib.rs
+@@ -2865,9 +2865,8 @@ mod stdtests {
+                     fn prop(n: $ty_int) -> bool {
+                         let mut wtr = vec![];
+                         wtr.$write::<BigEndian>(n.clone()).unwrap();
+-                        let mut rdr = Vec::new();
+-                        rdr.extend(wtr[wtr.len()-$bytes..].iter().map(|&x| x));
+-                        let mut rdr = Cursor::new(rdr);
++                        let offset = wtr.len() - $bytes;
++                        let mut rdr = Cursor::new(&mut wtr[offset..]);
+                         n == rdr.$read::<BigEndian>($bytes).unwrap()
+                     }
+                     qc_sized(prop as fn($ty_int) -> bool, $max);
+@@ -2889,7 +2888,12 @@ mod stdtests {
+                     fn prop(n: $ty_int) -> bool {
+                         let mut wtr = vec![];
+                         wtr.$write::<NativeEndian>(n.clone()).unwrap();
+-                        let mut rdr = Cursor::new(wtr);
++                        let offset = if cfg!(target_endian = "big") {
++                            wtr.len() - $bytes
++                        } else {
++                            0
++                        };
++                        let mut rdr = Cursor::new(&mut wtr[offset..]);
+                         n == rdr.$read::<NativeEndian>($bytes).unwrap()
+                     }
+                     qc_sized(prop as fn($ty_int) -> bool, $max);
+-- 
+2.15.0
+

rust-byteorder.spec

@@ -12,6 +12,8 @@ Summary:        Library for reading/writing numbers in big-endian and little-end
 License:        Unlicense or MIT
 URL:            https://crates.io/crates/byteorder
 Source0:        https://crates.io/api/v1/crates/%{crate}/%{version}/download#/%{crate}-%{version}.crate
+# https://github.com/BurntSushi/byteorder/pull/104
+Patch0:         0001-Fix-prop_ext_-u-int_-native_endian-on-BE-targets.patch
 
 ExclusiveArch:  %{rust_arches}