d335d73889
This adds a noexcept-specifier to each constructor and assignment operator of std::reverse_iterator so that they are noexcept when the corresponding operation on the underlying iterator is noexcept. The std::reverse_iterator class template already requires that the operations on the underlying type are valid, so we don't need to use the std::is_nothrow_xxx traits to protect against errors when the expression isn't even valid. We can just use a noexcept operator to test if the expression can throw, without the overhead of redundantly checking if the initialization/assignment would be valid. Signed-off-by: Jonathan Wakely <jwakely@redhat.com> libstdc++-v3/ChangeLog: PR libstdc++/94418 * include/bits/stl_iterator.h (reverse_iterator): Use conditional noexcept on constructors and assignment operators. * testsuite/24_iterators/reverse_iterator/noexcept.cc: New test. |
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file: libstdc++-v3/README New users may wish to point their web browsers to the file index.html in the 'doc/html' subdirectory. It contains brief building instructions and notes on how to configure the library in interesting ways.