From 1575dcd134f4fae7255787293f4988bbd043de95 Mon Sep 17 00:00:00 2001
From: Ludovic Courtès <ludo@gnu.org>
Date: Sun, 3 Jan 2016 14:49:55 +0100
Subject: gnu: grep: Skip timing-sensitive test.

This avoids failures on loaded machines as seen
at <http://hydra.gnu.org/build/906900/log/raw>.

* gnu/packages/patches/grep-timing-sensitive-test.patch: New file.
* gnu-system.am (dist_patch_DATA): Add it.
* gnu/packages/base.scm (grep): Use it.
---
 gnu/packages/base.scm                                 |  4 +++-
 gnu/packages/patches/grep-timing-sensitive-test.patch | 15 +++++++++++++++
 2 files changed, 18 insertions(+), 1 deletion(-)
 create mode 100644 gnu/packages/patches/grep-timing-sensitive-test.patch

(limited to 'gnu/packages')

diff --git a/gnu/packages/base.scm b/gnu/packages/base.scm
index a55711e9ea..a7b74cfb93 100644
--- a/gnu/packages/base.scm
+++ b/gnu/packages/base.scm
@@ -80,7 +80,9 @@ command-line arguments, multiple languages, and so on.")
                                 version ".tar.xz"))
             (sha256
              (base32
-              "1srn321x7whlhs5ks36zlcrrmj4iahll8fxwsh1vbz3v04px54fa"))))
+              "1srn321x7whlhs5ks36zlcrrmj4iahll8fxwsh1vbz3v04px54fa"))
+            (patches
+             (list (search-patch "grep-timing-sensitive-test.patch")))))
    (build-system gnu-build-system)
    (native-inputs `(("perl" ,perl)))             ;some of the tests require it
    (synopsis "Print lines matching a pattern")
diff --git a/gnu/packages/patches/grep-timing-sensitive-test.patch b/gnu/packages/patches/grep-timing-sensitive-test.patch
new file mode 100644
index 0000000000..8cfcc848bc
--- /dev/null
+++ b/gnu/packages/patches/grep-timing-sensitive-test.patch
@@ -0,0 +1,15 @@
+Skip this performance regression test.
+
+The test measures things on the order of 20ms.  On a loaded machine, we
+have seen enough variation that the test would fail.
+
+--- grep-2.22/tests/long-pattern-perf	2016-01-03 12:52:38.491575007 +0100
++++ grep-2.22/tests/long-pattern-perf	2016-01-03 12:53:39.768464687 +0100
+@@ -16,6 +16,7 @@
+ # You should have received a copy of the GNU General Public License
+ # along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ 
++exit 77
+ . "${srcdir=.}/init.sh"; path_prepend_ ../src
+ 
+ fail=0
-- 
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