Merge branch 'fix-crash'

1 files changed, 11 insertions, 2 deletions

diff --git a/node.go b/node.go
index 05aefb8..c9fb21c 100644
--- a/node.go
+++ b/node.go
@@ -221,11 +221,20 @@ func (n *node) write(p *page) {
 			_assert(elem.pgid != p.id, "write: circular dependency occurred")
 		}
 
+		// If the length of key+value is larger than the max allocation size
+		// then we need to reallocate the byte array pointer.
+		//
+		// See: https://github.com/boltdb/bolt/pull/335
+		klen, vlen := len(item.key), len(item.value)
+		if len(b) < klen+vlen {
+			b = (*[maxAllocSize]byte)(unsafe.Pointer(&b[0]))[:]
+		}
+
 		// Write data for the element to the end of the page.
 		copy(b[0:], item.key)
-		b = b[len(item.key):]
+		b = b[klen:]
 		copy(b[0:], item.value)
-		b = b[len(item.value):]
+		b = b[vlen:]
 	}
 
 	// DEBUG ONLY: n.dump()