https://gcc.gnu.org/bugzilla/show_bug.cgi?id=78980
Bug ID: 78980
Summary: runtime/internal/atomic FAILs on 32-bit SPARC
Product: gcc
Version: 7.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: go
Assignee: ian at airs dot com
Reporter: ro at gcc dot gnu.org
CC: cmang at google dot com
Target Milestone: ---
Host: sparc*-sun-solaris2.*
Target: sparc*-sun-solaris2.*
Build: sparc*-sun-solaris2.*
Between 20160909 and 20160912, there occured a new libgo testsuite failure on
32-bit (only) Solaris/SPARC:
FAIL: runtime/internal/atomic
--- FAIL: TestXadduintptrOnUint64 (0.01s)
atomic_test.go:65: xadduintptr should increase lower-order bits, want
100, got 429496729600
FAIL
FAIL: runtime/internal/atomic
go/runtime/internal/atomic/atomic_test.go has
// Tests that xadduintptr correctly updates 64-bit values. The place where
// we actually do so is mstats.go, functions mSysStat{Inc,Dec}.
func TestXadduintptrOnUint64(t *testing.T) {
/* if runtime.BigEndian != 0 {
// On big endian architectures, we never use xadduintptr to
update
// 64-bit values and hence we skip the test. (Note that
functions
// mSysStat{Inc,Dec} in mstats.go have explicit checks for
// big-endianness.)
return
}*/
but it's commented (and obviously isn't an issue on 64-bit SPARC).
Rainer
