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all: document legacy //go:linkname for modules with ≥20,000 dependents

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For #67401.

Change-Id: Icc10ede72547d8020c0ba45e89d954822a4b2455
Reviewed-on: https://go-review.googlesource.com/c/go/+/587218
Auto-Submit: Russ Cox <rsc@golang.org>
Reviewed-by: Cherry Mui <cherryyz@google.com>
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
This commit is contained in:
Russ Cox 2024-05-21 23:24:47 -04:00 • committed by Gopher Robot
parent 2f07d44556
commit bde905af5b
18 changed files with 207 additions and 1 deletions
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10
src/encoding/json/decode.go
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@ -17,6 +17,7 @@ import (
"unicode"
"unicode/utf16"
"unicode/utf8"
_ "unsafe" // for linkname
)
// Unmarshal parses the JSON-encoded data and stores the result
@ -1178,6 +1179,15 @@ func unquote(s []byte) (t string, ok bool) {
return
}
// unquoteBytes should be an internal detail,
// but widely used packages access it using linkname.
// Notable members of the hall of shame include:
// - github.com/bytedance/sonic
//
// Do not remove or change the type signature.
// See go.dev/issue/67401.
//
//go:linkname unquoteBytes
func unquoteBytes(s []byte) (t []byte, ok bool) {
if len(s) < 2 || s[0] != '"' || s[len(s)-1] != '"' {
return