stream: the position of _read() is wrong

Fixes: nodejs#33940
helloyou2012 · Apr 19, 2021 · e6de79d · e6de79d
1 parent ee9e2a2
commit e6de79d
Showing 1 changed file with 4 additions and 4 deletions.
diff --git a/lib/internal/fs/streams.js b/lib/internal/fs/streams.js
@@ -255,6 +255,10 @@ ReadStream.prototype._read = function(n) {
       if (er) {
         errorOrDestroy(this, er);
       } else if (bytesRead > 0) {
+        if (this.pos !== undefined) {
+          this.pos += bytesRead;
+        }
+
         this.bytesRead += bytesRead;
 
         if (bytesRead !== buf.length) {
@@ -271,10 +275,6 @@ ReadStream.prototype._read = function(n) {
         this.push(null);
       }
     });
-
-  if (this.pos !== undefined) {
-    this.pos += n;
-  }
 };
 
 ReadStream.prototype._destroy = function(err, cb) {