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cmd/link: fix invalid usage of reflect.SliceHeader 

Caught by "go vet" built with golang.org/cl/248192.

Change-Id: I446083533dd82ecef8db591beb7bd3d70b040d4a
Reviewed-on: https://go-review.googlesource.com/c/go/+/268099
Trust: Cuong Manh Le <cuong.manhle.vn@gmail.com>
Run-TryBot: Cuong Manh Le <cuong.manhle.vn@gmail.com>
TryBot-Result: Go Bot <gobot@golang.org>
Reviewed-by: Ian Lance Taylor <iant@golang.org>
Reviewed-by: Cherry Zhang <cherryyz@google.com>
This commit is contained in:
Cuong Manh Le 2020-11-07 12:03:36 +07:00
parent bb9a96d03a
commit 2c80de74d5
1 changed files with 4 additions and 1 deletions
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5
src/cmd/link/internal/ld/outbuf_windows.go
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@ -35,7 +35,10 @@ func (out *OutBuf) Mmap(filesize uint64) error {
if err != nil {
return err
}
*(*reflect.SliceHeader)(unsafe.Pointer(&out.buf)) = reflect.SliceHeader{Data: ptr, Len: int(filesize), Cap: int(filesize)}
bufHdr := (*reflect.SliceHeader)(unsafe.Pointer(&out.buf))
bufHdr.Data = ptr
bufHdr.Len = int(filesize)
bufHdr.Cap = int(filesize)
// copy heap to new mapping
if uint64(oldlen+len(out.heap)) > filesize {