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-rw-r--r--boost/utility/string_ref.hpp2
1 files changed, 2 insertions, 0 deletions
diff --git a/boost/utility/string_ref.hpp b/boost/utility/string_ref.hpp
index d234e5444a..4b36ffc0d8 100644
--- a/boost/utility/string_ref.hpp
+++ b/boost/utility/string_ref.hpp
@@ -181,6 +181,7 @@ namespace boost {
}
size_type find(basic_string_ref s) const {
+ if (s.empty()) return 0;
const_iterator iter = std::search ( this->cbegin (), this->cend (),
s.cbegin (), s.cend (), traits::eq );
return iter == this->cend () ? npos : std::distance ( this->cbegin (), iter );
@@ -193,6 +194,7 @@ namespace boost {
}
size_type rfind(basic_string_ref s) const {
+ if (s.empty()) return 0;
const_reverse_iterator iter = std::search ( this->crbegin (), this->crend (),
s.crbegin (), s.crend (), traits::eq );
return iter == this->crend () ? npos : (std::distance(iter, this->crend()) - s.size());