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-rw-r--r--embedding/components/find/nsFind.cpp5
1 files changed, 5 insertions, 0 deletions
diff --git a/embedding/components/find/nsFind.cpp b/embedding/components/find/nsFind.cpp
index 5fc1f9db6..6987c11d3 100644
--- a/embedding/components/find/nsFind.cpp
+++ b/embedding/components/find/nsFind.cpp
@@ -966,6 +966,11 @@ nsFind::Find(const char16_t* aPatText, nsIDOMRange* aSearchRange,
const char16_t* patStr = patAutoStr.get();
int32_t patLen = patAutoStr.Length() - 1;
+
+ // If this function is called with an empty string, we should early exit.
+ if (patLen < 0) {
+ return NS_OK;
+ }
// current offset into the pattern -- reset to beginning/end:
int32_t pindex = (mFindBackward ? patLen : 0);