buffer: align fast buffers on 8 byte boundary

Prevents alignment issues when people create a typed array from a buffer. Unaligned loads or stores are less efficent and (on some architectures) unsafe.
nodejs · Mar 28, 2012 · 285d8c6 · 285d8c6 · kapouer · Mar 29, 2012
1 parent 67fc1da
commit 285d8c6
Showing 1 changed file with 1 addition and 0 deletions.
diff --git a/lib/buffer.js b/lib/buffer.js
@@ -250,6 +250,7 @@ function Buffer(subject, encoding, offset) {
       this.parent = pool;
       this.offset = pool.used;
       pool.used += this.length;
+      if (pool.used & 7) pool.used = (pool.used + 8) & ~7;
     }
 
     // Treat array-ish objects as a byte array.