From 01a8d79fd76f7e523169c56a22be8ff84d8cd76a Mon Sep 17 00:00:00 2001
From: Noel Grandin <noel.grandin@collabora.co.uk>
Date: Thu, 31 Oct 2019 08:07:26 +0200
Subject: tdf#125688, special-case empty return

in FastAttributeList::getUnknownAttributes,
shaves 5% off load time

Change-Id: I5acac243d7af0c6fb44cbc15832f9d322fa6c7f4
Reviewed-on: https://gerrit.libreoffice.org/81819
Tested-by: Jenkins
Reviewed-by: Noel Grandin <noel.grandin@collabora.co.uk>
---
 sax/source/tools/fastattribs.cxx | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/sax/source/tools/fastattribs.cxx b/sax/source/tools/fastattribs.cxx
index 8aff8569d903..91df59d05107 100644
--- a/sax/source/tools/fastattribs.cxx
+++ b/sax/source/tools/fastattribs.cxx
@@ -234,7 +234,10 @@ OUString FastAttributeList::getOptionalValue( ::sal_Int32 Token )
 }
 Sequence< Attribute > FastAttributeList::getUnknownAttributes(  )
 {
-    Sequence< Attribute > aSeq( maUnknownAttributes.size() );
+    auto nSize = maUnknownAttributes.size();
+    if (nSize == 0)
+        return {};
+    Sequence< Attribute > aSeq( nSize );
     Attribute* pAttr = aSeq.getArray();
     for( const auto& rAttr : maUnknownAttributes )
         rAttr.FillAttribute( pAttr++ );
-- 
cgit