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cmd/internal/obj: move empty field to the top

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Due to #9401, trailing empty fields will occupy at least 1 byte
of space.

Fixes #12884.

Change-Id: I838d3f1a73637e526f5a6dbc348981227d5bb2fd
Reviewed-on: https://go-review.googlesource.com/15660
Run-TryBot: Minux Ma <minux@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Dave Cheney <dave@cheney.net>
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
This commit is contained in:
Shenghou Ma 2015-10-08 20:24:17 -04:00 • committed by Minux Ma
parent ee07504d26
commit 30b966307f
1 changed files with 2 additions and 2 deletions
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4
src/cmd/internal/obj/link.go
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@ -247,11 +247,11 @@ func (p *Prog) From3Offset() int64 {
// by clients such as the compiler. The exact meaning of this
// data is up to the client and is not interpreted by the cmd/internal/obj/... packages.
type ProgInfo struct {
_ struct{} // to prevent unkeyed literals. Trailing zero-sized field will take space.
Flags uint32 // flag bits
Reguse uint64 // registers implicitly used by this instruction
Regset uint64 // registers implicitly set by this instruction
Regindex uint64 // registers used by addressing mode
Flags uint32 // flag bits
_ struct{} // to prevent unkeyed literals
}
// Prog.as opcodes.