Bug 1194859 - crash in mozilla::a11y::ARIAGridCellAccessible::GroupPosition, r=marcoz

2015-08-18 20:38:24 -04:00
parent 6067c848fe
commit b40dafceac
2 changed files with 6 additions and 4 deletions
--- a/accessible/html/HTMLTableAccessible.cpp
+++ b/accessible/html/HTMLTableAccessible.cpp
@@ -147,8 +147,9 @@ GroupPos
 HTMLTableCellAccessible::GroupPosition()
 {
  int32_t count = 0, index = 0;
-  if (nsCoreUtils::GetUIntAttr(Table()->AsAccessible()->GetContent(),
-                               nsGkAtoms::aria_colcount, &count) &&
+  Accessible* table = Table()->AsAccessible();
+  if (table && nsCoreUtils::GetUIntAttr(table->GetContent(),
+                                        nsGkAtoms::aria_colcount, &count) &&
      nsCoreUtils::GetUIntAttr(mContent, nsGkAtoms::aria_colindex, &index)) {
    return GroupPos(0, index, count);
  }