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fs/Traits: call std::string::reserve() in BuildPathImpl()

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This commit is contained in:
Max Kellermann 2019-09-04 12:01:25 +02:00
parent e96856032f
commit 1bfede120a
1 changed files with 4 additions and 1 deletions
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5
src/fs/Traits.cxx
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@ -35,7 +35,10 @@ BuildPathImpl(typename Traits::const_pointer_type a, size_t a_size,
if (b_size == 0) if (b_size == 0)
return typename Traits::string(a, a_size); return typename Traits::string(a, a_size);
typename Traits::string result(a, a_size); typename Traits::string result;
result.reserve(a_size + 1 + b_size);
result.append(a, a_size);
if (!Traits::IsSeparator(a[a_size - 1])) if (!Traits::IsSeparator(a[a_size - 1]))
result.push_back(Traits::SEPARATOR); result.push_back(Traits::SEPARATOR);