mozilla-central: changeset 114674:6e5da7fd674016db774bb3b62eb6498ec44041e7

author	Mats Palmgren <matspal@gmail.com>
	Sat, 01 Dec 2012 01:10:40 +0100
changeset 114674	6e5da7fd674016db774bb3b62eb6498ec44041e7
parent 114673	88ee3b68083512476e7013fefb87ddc6d0258a0d
child 114675	aabc7c735fb0a706ecd745ca41ebb447fab1b8dd
push id	23926
push user	ryanvm@gmail.com
push date	Sat, 01 Dec 2012 15:27:30 +0000
treeherder	mozilla-central@ecdf0e332f17 [default view] [failures only]
perfherder	[talos] [build metrics] [platform microbench] (compared to previous push)
reviewers	bz
bugs	815315
milestone	20.0a1
first release with	nightly linux32 0352a32fde64 / 20.0a1 / 20121202030723 / files nightly linux64 0352a32fde64 / 20.0a1 / 20121202030723 / files nightly mac 0352a32fde64 / 20.0a1 / 20121202030723 / files nightly win32 0352a32fde64 / 20.0a1 / 20121202030723 / files nightly win64 0352a32fde64 / 20.0a1 / 20121202030723 / files
last release without	nightly linux32 d2fbc67f69f5 / 20.0a1 / 20121201030812 / files nightly linux64 d2fbc67f69f5 / 20.0a1 / 20121201030812 / files nightly mac d2fbc67f69f5 / 20.0a1 / 20121201030812 / files nightly win32 d2fbc67f69f5 / 20.0a1 / 20121201030812 / files nightly win64 d2fbc67f69f5 / 20.0a1 / 20121201030812 / files

--- a/layout/tables/nsCellMap.cpp
+++ b/layout/tables/nsCellMap.cpp
@@ -274,16 +274,20 @@ nsTableCellMap::Synchronize(nsTableFrame
       if (!maps.AppendElement(map)) {
         delete map;
         map = nullptr;
         NS_WARNING("Could not AppendElement");
         break;
       }
     }
   }
+  if (maps.IsEmpty()) {
+    MOZ_ASSERT(!mFirstMap);
+    return;
+  }
 
   int32_t mapIndex = maps.Length() - 1;  // Might end up -1
   nsCellMap* nextMap = maps.ElementAt(mapIndex);
   nextMap->SetNextSibling(nullptr);
   for (mapIndex-- ; mapIndex >= 0; mapIndex--) {
     nsCellMap* map = maps.ElementAt(mapIndex);
     map->SetNextSibling(nextMap);
     nextMap = map;