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, 10 insertions, 0 deletions

diff --git a/llgo/third_party/gofrontend/libgo/go/encoding/xml/xml.go b/llgo/third_party/gofrontend/libgo/go/encoding/xml/xml.go
index b473cb84584..8c15b98c3a9 100644
--- a/llgo/third_party/gofrontend/libgo/go/encoding/xml/xml.go
+++ b/llgo/third_party/gofrontend/libgo/go/encoding/xml/xml.go
@@ -196,6 +196,7 @@ type Decoder struct {
 	ns             map[string]string
 	err            error
 	line           int
+	offset         int64
 	unmarshalDepth int
 }
 
@@ -859,9 +860,17 @@ func (d *Decoder) getc() (b byte, ok bool) {
 	if b == '\n' {
 		d.line++
 	}
+	d.offset++
 	return b, true
 }
 
+// InputOffset returns the input stream byte offset of the current decoder position.
+// The offset gives the location of the end of the most recently returned token
+// and the beginning of the next token.
+func (d *Decoder) InputOffset() int64 {
+	return d.offset
+}
+
 // Return saved offset.
 // If we did ungetc (nextByte >= 0), have to back up one.
 func (d *Decoder) savedOffset() int {
@@ -891,6 +900,7 @@ func (d *Decoder) ungetc(b byte) {
 		d.line--
 	}
 	d.nextByte = int(b)
+	d.offset--
 }
 
 var entity = map[string]int{