From 70c8ff8e5af7d2661b64fb92a158f2860af7766c Mon Sep 17 00:00:00 2001
From: "Matt A. Tobin" <email@mattatobin.com>
Date: Fri, 17 Apr 2020 06:10:23 -0400
Subject: Bug 1377978 - Make nsRange use uint32_t to offset

Tag #1375
---
 embedding/components/find/nsFind.cpp           | 19 ++++++++++++-------
 embedding/components/find/nsWebBrowserFind.cpp |  2 +-
 2 files changed, 13 insertions(+), 8 deletions(-)

(limited to 'embedding')

diff --git a/embedding/components/find/nsFind.cpp b/embedding/components/find/nsFind.cpp
index 63304dafb..89221251e 100644
--- a/embedding/components/find/nsFind.cpp
+++ b/embedding/components/find/nsFind.cpp
@@ -609,7 +609,7 @@ nsFind::NextNode(nsIDOMRange* aSearchRange,
     // beginning/end of the search range.
     nsCOMPtr<nsIDOMNode> startNode;
     nsCOMPtr<nsIDOMNode> endNode;
-    int32_t startOffset, endOffset;
+    uint32_t startOffset, endOffset;
     if (aContinueOk) {
 #ifdef DEBUG_FIND
       printf("Match in progress: continuing past endpoint\n");
@@ -645,7 +645,8 @@ nsFind::NextNode(nsIDOMRange* aSearchRange,
       }
     }
 
-    rv = InitIterator(startNode, startOffset, endNode, endOffset);
+    rv = InitIterator(startNode, static_cast<int32_t>(startOffset),
+                      endNode, static_cast<int32_t>(endOffset));
     NS_ENSURE_SUCCESS(rv, rv);
     if (!aStartPoint) {
       aStartPoint = aSearchRange;
@@ -665,14 +666,18 @@ nsFind::NextNode(nsIDOMRange* aSearchRange,
       if (mFindBackward) {
         aStartPoint->GetEndContainer(getter_AddRefs(node));
         if (mIterNode.get() == node.get()) {
-          aStartPoint->GetEndOffset(&mIterOffset);
+          uint32_t endOffset;
+          aStartPoint->GetEndOffset(&endOffset);
+          mIterOffset = static_cast<int32_t>(endOffset);
         } else {
           mIterOffset = -1; // sign to start from end
         }
       } else {
         aStartPoint->GetStartContainer(getter_AddRefs(node));
         if (mIterNode.get() == node.get()) {
-          aStartPoint->GetStartOffset(&mIterOffset);
+          uint32_t startOffset;
+          aStartPoint->GetStartOffset(&startOffset);
+          mIterOffset = static_cast<int32_t>(startOffset);
         } else {
           mIterOffset = 0;
         }
@@ -997,7 +1002,7 @@ nsFind::Find(const nsAString& aPatText, nsIDOMRange* aSearchRange,
 
   // Get the end point, so we know when to end searches:
   nsCOMPtr<nsIDOMNode> endNode;
-  int32_t endOffset;
+  uint32_t endOffset;
   aEndPoint->GetEndContainer(getter_AddRefs(endNode));
   aEndPoint->GetEndOffset(&endOffset);
 
@@ -1132,8 +1137,8 @@ nsFind::Find(const nsAString& aPatText, nsIDOMRange* aSearchRange,
     // Have we gone past the endpoint yet? If we have, and we're not in the
     // middle of a match, return.
     if (mIterNode == endNode &&
-        ((mFindBackward && findex < endOffset) ||
-         (!mFindBackward && findex > endOffset))) {
+        ((mFindBackward && findex < static_cast<int32_t>(endOffset)) ||
+         (!mFindBackward && findex > static_cast<int32_t>(endOffset)))) {
       ResetAll();
       return NS_OK;
     }
diff --git a/embedding/components/find/nsWebBrowserFind.cpp b/embedding/components/find/nsWebBrowserFind.cpp
index aadc66f8e..5aefba975 100644
--- a/embedding/components/find/nsWebBrowserFind.cpp
+++ b/embedding/components/find/nsWebBrowserFind.cpp
@@ -518,7 +518,7 @@ nsWebBrowserFind::GetSearchLimits(nsIDOMRange* aSearchRange,
 
   nsCOMPtr<nsIDOMRange> range;
   nsCOMPtr<nsIDOMNode> node;
-  int32_t offset;
+  uint32_t offset;
 
   // Forward, not wrapping: SelEnd to DocEnd
   if (!mFindBackwards && !aWrap) {
-- 
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