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| author | Ben Noordhuis <info@bnoordhuis.nl> | 2013-06-27 03:18:41 +0200 |
|---|---|---|
| committer | Ben Noordhuis <info@bnoordhuis.nl> | 2013-06-27 03:22:05 +0200 |
| commit | cf6acf2a1a8717eb55aec8df79121ee6a75611f4 (patch) | |
| tree | 0795e3516e86e05b3b983b41264378267e72df5b | |
| parent | 2a8c5ddc468670498b98231ea5c2464fd7e5c858 (diff) | |
| download | node-new-cf6acf2a1a8717eb55aec8df79121ee6a75611f4.tar.gz | |
buffer: add comment explaining buffer alignment
Avoids alignment issues (unaligned loads/stores) on ARM. Originally
added in commit 285d8c6.
Fixes #3030.
| -rw-r--r-- | lib/buffer.js | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/lib/buffer.js b/lib/buffer.js index 000c54b3a8..51406b6ed6 100644 --- a/lib/buffer.js +++ b/lib/buffer.js @@ -199,8 +199,8 @@ function Buffer(subject, encoding, offset) { if (!pool || pool.length - pool.used < this.length) allocPool(); this.parent = pool; this.offset = pool.used; - pool.used += this.length; - if (pool.used & 7) pool.used = (pool.used + 8) & ~7; + // Align on 8 byte boundary to avoid alignment issues on ARM. + pool.used = (pool.used + this.length + 7) & ~7; } else { // Zero-length buffer |