fix(pbuf): wrong pointer

fumiama · fumiama · commit 3bb358367eb5 · 2025-10-02T14:59:53.000+08:00
diff --git a/pbuf/pooler.go b/pbuf/pooler.go
@@ -4,6 +4,7 @@ import (
 	"bytes"
 	"io"
 	"reflect"
+	"unsafe"
 )
 
 // UserBuffer with customizable user data structure inside.
@@ -18,6 +19,7 @@ func (bufpooler[USRDAT]) New(config any, pooled UserBuffer[USRDAT]) UserBuffer[U
 	switch c := config.(type) {
 	case int:
 		pooled.Grow(c)
+		*(*[]byte)(unsafe.Pointer(&pooled.Buffer)) = pooled.Bytes()[:c]
 		if c != pooled.Len() {
 			panic("unexpected bad buffer Grow")
 		}

Original file line number	Diff line number	Diff line change
`@@ -4,6 +4,7 @@ import (`
`4`	`4`	`"bytes"`
`5`	`5`	`"io"`
`6`	`6`	`"reflect"`
	`7`	`+ "unsafe"`
`7`	`8`	`)`
`8`	`9`
`9`	`10`	`// UserBuffer with customizable user data structure inside.`
`@@ -18,6 +19,7 @@ func (bufpooler[USRDAT]) New(config any, pooled UserBuffer[USRDAT]) UserBuffer[U`
`18`	`19`	`switch c := config.(type) {`
`19`	`20`	`case int:`
`20`	`21`	`pooled.Grow(c)`
	`22`	`+ ([]byte)(unsafe.Pointer(&pooled.Buffer)) = pooled.Bytes()[:c]`
`21`	`23`	`if c != pooled.Len() {`
`22`	`24`	`panic("unexpected bad buffer Grow")`
`23`	`25`	`}`