[rtems commit] spglobalcon01: LLVM optimization makes variable i always 1

[Daniel Hellstrom]

Module:    rtems
Branch:    master
Commit:    97d2c44332e73df730673555f76a403968676d8c
Changeset: http://git.rtems.org/rtems/commit/?id=97d2c44332e73df730673555f76a403968676d8c

Author:    Daniel Hellstrom <daniel at gaisler.com>
Date:      Fri Jun 29 14:24:58 2018 +0200

spglobalcon01: LLVM optimization makes variable i always 1

Declare i volatile to avoid compiler optimization putting i
into data section with initialization value 1.

---

 testsuites/sptests/spglobalcon01/init.cc | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/testsuites/sptests/spglobalcon01/init.cc b/testsuites/sptests/spglobalcon01/init.cc
index aee9d0a..f31ceca 100644
--- a/testsuites/sptests/spglobalcon01/init.cc
+++ b/testsuites/sptests/spglobalcon01/init.cc
@@ -27,10 +27,10 @@ class A {
       ++i;
     }
 
-    static int i;
+    static volatile int i;
 };
 
-int A::i;
+volatile int A::i;
 
 static A a;