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Use allocator_traits if available

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This commit is contained in:
Victor Zverovich 2018-02-10 06:51:13 -08:00
parent 66b25ef0d0
commit cdfcee27fb
2 changed files with 13 additions and 2 deletions
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11
include/fmt/format.h
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@ -222,7 +222,16 @@ inline dummy_int isinf(...) { return dummy_int(); }
inline dummy_int _finite(...) { return dummy_int(); }
inline dummy_int isnan(...) { return dummy_int(); }
inline dummy_int _isnan(...) { return dummy_int(); }
template <typename Allocator>
typename Allocator::value_type *allocate(Allocator& alloc, std::size_t n) {
#if __cplusplus >= 201103L || FMT_MSC_VER >= 1700
return std::allocator_traits<Allocator>::allocate(alloc, n);
#else
return this->allocate(n);
#endif
}
} // namespace internal
} // namespace fmt
namespace std {
@ -442,7 +451,7 @@ void basic_memory_buffer<T, SIZE, Allocator>::grow(std::size_t size) {
if (size > new_capacity)
new_capacity = size;
T *old_data = this->data();
T *new_data = this->allocate(new_capacity);
T *new_data = internal::allocate<Allocator>(*this, new_capacity);
// The following code doesn't throw, so the raw pointer above doesn't leak.
std::uninitialized_copy(old_data, old_data + this->size(),
internal::make_ptr(new_data, new_capacity));

4
test/mock-allocator.h
View File

@ -78,7 +78,9 @@ class AllocatorRef {
Allocator *get() const { return alloc_; }
value_type* allocate(std::size_t n) { return alloc_->allocate(n); }
value_type* allocate(std::size_t n) {
return fmt::internal::allocate(*alloc_, n);
}
void deallocate(value_type* p, std::size_t n) { alloc_->deallocate(p, n); }
};