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Fix utf8::to_previous that could go before the begin iterator

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Maxime Coste 2017-10-08 09:28:23 +08:00
parent 397e5ef0e1
commit 78d7d512cb
1 changed files with 1 additions and 1 deletions
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src/utf8.hh
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@ -157,7 +157,7 @@ void to_previous(Iterator& it, const Iterator& begin) noexcept
{ {
if (it != begin) if (it != begin)
--it; --it;
while (not is_character_start(*it)) while (it != begin and not is_character_start(*it))
--it; --it;
} }
// returns an iterator to the previous character first byte // returns an iterator to the previous character first byte