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Description: archive/tar: reuse temporary buffer in writeHeader
Author: Cristian Staretu <unclejacksons@gmail.com>
Last-Update: 2014-07-03
Forwarded: not-needed
Origin: vendor, https://code.google.com/p/go/source/detail?r=837348e418f33fc7a242f56dbe2feff829532526#
---
diff -r c5f72a685e25 -r 837348e418f3 src/pkg/archive/tar/writer.go
--- a/src/pkg/archive/tar/writer.go Wed Jul 02 15:28:57 2014 -0700
+++ b/src/pkg/archive/tar/writer.go Thu Jul 03 09:40:53 2014 +1000
@@ -37,8 +37,9 @@
nb int64 // number of unwritten bytes for current file entry
pad int64 // amount of padding to write after current file entry
closed bool
- usedBinary bool // whether the binary numeric field extension was used
- preferPax bool // use pax header instead of binary numeric header
+ usedBinary bool // whether the binary numeric field extension was used
+ preferPax bool // use pax header instead of binary numeric header
+ hdrBuff [blockSize]byte // buffer to use in writeHeader
}
// NewWriter creates a new Writer writing to w.
@@ -160,7 +161,8 @@
// subsecond time resolution, but for now let's just capture
// too long fields or non ascii characters
- header := make([]byte, blockSize)
+ header := tw.hdrBuff[:]
+ copy(header, zeroBlock)
s := slicer(header)
// keep a reference to the filename to allow to overwrite it later if we detect that we can use ustar longnames instead of pax
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