MaxGekk commented on code in PR #47871:
URL: https://github.com/apache/spark/pull/47871#discussion_r1731426477
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common/unsafe/src/main/java/org/apache/spark/sql/catalyst/util/CollationAwareUTF8String.java:
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@@ -671,6 +671,11 @@ public static int indexOf(final UTF8String target, final
UTF8String pattern,
// Initialize the string search with respect to the specified ICU
collation.
String targetStr = target.toValidString();
String patternStr = pattern.toValidString();
+ // Check if `start` is out of bounds. The provided offset `start` is given
in number of
+ // codepoints, so a simple `targetStr.length` check is not sufficient
here. This check is
Review Comment:
Thank you for the explanation.
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