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| author | Patrick Palka <ppalka@redhat.com> | 2025-04-04 15:05:09 -0400 |
|---|---|---|
| committer | Patrick Palka <ppalka@redhat.com> | 2025-04-04 15:05:09 -0400 |
| commit | 2a36d22ab52d6ffce9a1fcaf7aca83336679e111 (patch) | |
| tree | 1a7e785a74125a42ff6881802eed3e7708dc8e44 /gcc/rust/ast/rust-ast-formatting.cc | |
| parent | d25728c98682c058bfda79333c94b0a8cf2a3f49 (diff) | |
| download | gcc-2a36d22ab52d6ffce9a1fcaf7aca83336679e111.zip gcc-2a36d22ab52d6ffce9a1fcaf7aca83336679e111.tar.gz gcc-2a36d22ab52d6ffce9a1fcaf7aca83336679e111.tar.bz2 | |
libstdc++: Avoid redundant value_type object in flat_set::emplace [PR119620]
flat_set::emplace (and flat_multiset's) currently unconditionally
constructs an object outside of the container, but if we're passed
a value_type object we can and should avoid that.
PR libstdc++/119620
libstdc++-v3/ChangeLog:
* include/std/flat_set (_Flat_set_impl::_M_try_emplace): Split
out into two overloads, one taking at least one argument and one
taking zero arguments. Turn __k into an auto&& reference bound
to __arg if it's already a value_type and otherwise bound to a
lifetime-extended value_type temporary.
* testsuite/23_containers/flat_multiset/1.cc (test08): New test.
* testsuite/23_containers/flat_set/1.cc (test08): New test.
Reviewed-by: Tomasz Kamiński <tkaminsk@redhat.com>
Reviewed-by: Jonathan Wakely <jwakely@redhat.com>
Diffstat (limited to 'gcc/rust/ast/rust-ast-formatting.cc')
0 files changed, 0 insertions, 0 deletions