Umm, I didn't think to search for a corresponding incident and I considered the
defect to be so minor as to not warrant an issue. The following patch has been
applied already on 4.2.x:
Index: tests/support/atomic_xchg.cpp
===================================================================
--- tests/support/atomic_xchg.cpp (revision 1388732)
+++ tests/support/atomic_xchg.cpp (revision 1388733)
@@ -297,7 +297,7 @@ void run_test (intT, thr_args_base::tag_
// compute the expected result, "skipping" zeros by incrementing
// expect twice when it overflows and wraps around to 0 (zero is
// used as the lock variable in thread_routine() above)
- intT expect = intT (1);
+ intT volatile expect = intT (1);
const unsigned long nincr = (Args::nthreads_ * Args::nincr_) / 2U;
