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libstdc++: Micro-optimizaion for std::bitset stream extraction
authorJonathan Wakely <jwakely@redhat.com>
Fri, 23 Sep 2022 12:39:31 +0000 (13:39 +0100)
committerJonathan Wakely <jwakely@redhat.com>
Fri, 23 Sep 2022 14:10:51 +0000 (15:10 +0100)
commitab98b4c0725eb7c0f03d319ef3e22ae761b2698a
treec1e1d9c403b91572307e00582075fe600192ec16tree
parentaf611afe5fcc908a6678b5b205fb5af7d64fbcb2commit | diff
libstdc++: Micro-optimizaion for std::bitset stream extraction

Don't bother trying to copy any characters for bitset<0>.

libstdc++-v3/ChangeLog:

* include/std/bitset (operator>>): Do not copy for N==0.
* testsuite/20_util/bitset/io/input.cc: Add comment.
libstdc++-v3/include/std/bitset diff | blob | blame | history
libstdc++-v3/testsuite/20_util/bitset/io/input.cc diff | blob | blame | history
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