cmd/compile/internal/gc: remove unused exportsize variable

In Go 1.7 and earlier, gc.exportsize tracked the number of bytes
written through exportf. With the removal of the old exporter in Go 1.8
exportf is only used for printing the build id, and the header and
trailer of the binary export format. The size of the export data is
now returned directly from the exporter and exportsize is never
referenced. Remove it.

Change-Id: Id301144b3c26c9004c722d0c55c45b0e0801a88c
Reviewed-on: https://go-review.googlesource.com/38116
Run-TryBot: Dave Cheney <dave@cheney.net>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>

diff --git a/src/cmd/compile/internal/gc/export.go b/src/cmd/compile/internal/gc/export.go
index f39dd2bee77d81fcdccdd43720e7d5a3015038a3..b42c1aa601cab2218a73f41b70dd9e14e6ab5b1c 100644 (file)
--- a/src/cmd/compile/internal/gc/export.go
+++ b/src/cmd/compile/internal/gc/export.go
@@ -15,12 +15,10 @@ import (
 
 var (
        Debug_export int // if set, print debugging information about export data
-       exportsize   int
 )
 
 func exportf(format string, args ...interface{}) {
-       n, _ := fmt.Fprintf(bout, format, args...)
-       exportsize += n
+       fmt.Fprintf(bout, format, args...)
        if Debug_export != 0 {
                fmt.Printf(format, args...)
        }