chore: update unsafe conversions

driver/pgdriver/unsafe.go

@@ -1,19 +1,21 @@
+//go:build !appengine
 // +build !appengine
 
 package pgdriver
 
 import "unsafe"
 
 func bytesToString(b []byte) string {
-	return *(*string)(unsafe.Pointer(&b))
+	if len(b) == 0 {
+		return ""
+	}
+	return unsafe.String(&b[0], len(b))
 }
 
 //nolint:deadcode,unused
 func stringToBytes(s string) []byte {
-	return *(*[]byte)(unsafe.Pointer(
-		&struct {
-			string
-			Cap int
-		}{s, len(s)},
-	))
+	if s == "" {
+		return []byte{}
+	}
+	return unsafe.Slice(unsafe.StringData(s), len(s))
 }

extra/bunotel/unsafe.go

@@ -1,18 +1,20 @@
+//go:build !appengine
 // +build !appengine
 
 package bunotel
 
 import "unsafe"
 
 func bytesToString(b []byte) string {
-	return *(*string)(unsafe.Pointer(&b))
+	if len(b) == 0 {
+		return ""
+	}
+	return unsafe.String(&b[0], len(b))
 }
 
 func stringToBytes(s string) []byte {
-	return *(*[]byte)(unsafe.Pointer(
-		&struct {
-			string
-			Cap int
-		}{s, len(s)},
-	))
+	if s == "" {
+		return []byte{}
+	}
+	return unsafe.Slice(unsafe.StringData(s), len(s))
 }

internal/unsafe.go

@@ -1,3 +1,4 @@
+//go:build !appengine
 // +build !appengine
 
 package internal
@@ -6,15 +7,16 @@ import "unsafe"
 
 // String converts byte slice to string.
 func String(b []byte) string {
-	return *(*string)(unsafe.Pointer(&b))
+	if len(b) == 0 {
+		return ""
+	}
+	return unsafe.String(&b[0], len(b))
 }
 
 // Bytes converts string to byte slice.
 func Bytes(s string) []byte {
-	return *(*[]byte)(unsafe.Pointer(
-		&struct {
-			string
-			Cap int
-		}{s, len(s)},
-	))
+	if s == "" {
+		return []byte{}
+	}
+	return unsafe.Slice(unsafe.StringData(s), len(s))
 }