Fix SyscallVectorisedWriter on 32-bit unix systems

nekohasekai · nekohasekai · commit c31e7399d044 · 2025-08-08T15:42:20.000+08:00
diff --git a/common/bufio/vectorised_unix.go b/common/bufio/vectorised_unix.go
@@ -44,11 +44,11 @@ func (w *SyscallVectorisedWriter) WriteVectorised(buffers []*buf.Buffer) error {
 			r0, _, innerErr = unix.RawSyscall(unix.SYS_WRITEV, fd, uintptr(unsafe.Pointer(&writeIovecList[0])), uintptr(len(writeIovecList)))
 			writeN := uint64(r0)
 			for writeN > 0 && len(writeIovecList) > 0 {
-				if writeIovecList[0].Len > writeN {
+				if uint64(writeIovecList[0].Len) > writeN {
 					writeIovecList[0].Base = (*byte)(unsafe.Add(unsafe.Pointer(writeIovecList[0].Base), writeN))
 					break
 				} else {
-					writeN -= writeIovecList[0].Len
+					writeN -= uint64(writeIovecList[0].Len)
 					writeIovecList = writeIovecList[1:]
 				}
 			}

Original file line number	Diff line number	Diff line change
`@@ -44,11 +44,11 @@ func (w SyscallVectorisedWriter) WriteVectorised(buffers []buf.Buffer) error {`
`44`	`44`	`r0, _, innerErr = unix.RawSyscall(unix.SYS_WRITEV, fd, uintptr(unsafe.Pointer(&writeIovecList[0])), uintptr(len(writeIovecList)))`
`45`	`45`	`writeN := uint64(r0)`
`46`	`46`	`for writeN > 0 && len(writeIovecList) > 0 {`
`47`		`- if writeIovecList[0].Len > writeN {`
	`47`	`+ if uint64(writeIovecList[0].Len) > writeN {`
`48`	`48`	`writeIovecList[0].Base = (*byte)(unsafe.Add(unsafe.Pointer(writeIovecList[0].Base), writeN))`
`49`	`49`	`break`
`50`	`50`	`} else {`
`51`		`- writeN -= writeIovecList[0].Len`
	`51`	`+ writeN -= uint64(writeIovecList[0].Len)`
`52`	`52`	`writeIovecList = writeIovecList[1:]`
`53`	`53`	`}`
`54`	`54`	`}`