Roll gofrontend to a6e10414311a

This takes us to Go 1.4. Also includes a couple of changes to the test
suite, both in the runtime package:

- Disable TestSetPanicOnFault. We cannot support this scenario at all,
  due to LLVM's lack of non-call exceptions.

- Tweak TestFinalizerType. This test only passes with two GC runs.

Differential Revision: http://reviews.llvm.org/D8828

llvm-svn: 234134

1 files changed, 5 insertions, 1 deletions

diff --git a/llgo/third_party/gofrontend/libgo/go/syscall/str.go b/llgo/third_party/gofrontend/libgo/go/syscall/str.go
index 0fce842e8c1..2ddf04b2275 100644
--- a/llgo/third_party/gofrontend/libgo/go/syscall/str.go
+++ b/llgo/third_party/gofrontend/libgo/go/syscall/str.go
@@ -6,8 +6,12 @@ package syscall
 
 func itoa(val int) string { // do it here rather than with fmt to avoid dependency
 	if val < 0 {
-		return "-" + itoa(-val)
+		return "-" + uitoa(uint(-val))
 	}
+	return uitoa(uint(val))
+}
+
+func uitoa(val uint) string {
 	var buf [32]byte // big enough for int64
 	i := len(buf) - 1
 	for val >= 10 {