[PATCH 2/2] Documentation/litmus-tests: Add note on herd7 7.56 in atomic litmus test

Akira Yokosawa
2020-06-23T22:09:06Z

From f808c371075d2f92b955da1a83ecb3828db1972e Mon Sep 17 00:00:00 2001
From: Akira Yokosawa <akiyks@gmail.com>
Date: Wed, 24 Jun 2020 06:59:26 +0900
Subject: [PATCH 2/2] Documentation/litmus-tests: Add note on herd7 7.56 in atomic litmus test

herdtools 7.56 has enhanced herd7's C parser so that the "(void)expr"
construct in Atomic-RMW-ops-are-atomic-WRT-atomic_set.litmus is
accepted.

This is independent of LKMM's cat model, so mention the required
version in the header of the litmus test and its entry in README.

CC: Boqun Feng <boqun.feng@gmail.com>
Reported-by: Andrea Parri <parri.andrea@gmail.com>
Signed-off-by: Akira Yokosawa <akiyks@gmail.com>
---
Documentation/litmus-tests/README | 1 +
.../atomic/Atomic-RMW-ops-are-atomic-WRT-atomic_set.litmus | 1 +
2 files changed, 2 insertions(+)

diff --git a/Documentation/litmus-tests/README b/Documentation/litmus-tests/README
index b79e640214b9..7f5c6c3ed6c3 100644
--- a/Documentation/litmus-tests/README
+++ b/Documentation/litmus-tests/README
@@ -19,6 +19,7 @@ Atomic-RMW+mb__after_atomic-is-stronger-than-acquire.litmus

Atomic-RMW-ops-are-atomic-WRT-atomic_set.litmus
Test that atomic_set() cannot break the atomicity of atomic RMWs.
+ NOTE: Require herd7 7.56 or later which supports "(void)expr".

RCU (/rcu directory)
diff --git a/Documentation/litmus-tests/atomic/Atomic-RMW-ops-are-atomic-WRT-atomic_set.litmus b/Documentation/litmus-tests/atomic/Atomic-RMW-ops-are-atomic-WRT-atomic_set.litmus
index 49385314d911..ffd4d3e79c4a 100644
--- a/Documentation/litmus-tests/atomic/Atomic-RMW-ops-are-atomic-WRT-atomic_set.litmus
+++ b/Documentation/litmus-tests/atomic/Atomic-RMW-ops-are-atomic-WRT-atomic_set.litmus
@@ -4,6 +4,7 @@ C Atomic-RMW-ops-are-atomic-WRT-atomic_set
* Result: Never
*
* Test that atomic_set() cannot break the atomicity of atomic RMWs.
+ * NOTE: This requires herd7 7.56 or later which supports "(void)expr".
*)

{
--
2.17.1