fix(stringx): reject start > stop in Substr to prevent slice panic#5616
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fix(stringx): reject start > stop in Substr to prevent slice panic#5616SAY-5 wants to merge 1 commit into
SAY-5 wants to merge 1 commit into
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Signed-off-by: Sai Asish Y <say.apm35@gmail.com>
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Closes #5607.
Substrvalidatesstartandstopindividually against[0, length]but never checks thatstart <= stop, so calls likeSubstr("hello", 3, 2)slip past both guards and panic onrs[3:2]. Treatstart > stopas an invalid stop position so callers getErrInvalidStopPositioninstead of a runtime panic.