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git_commit commit e03c435d2a4900eb442c1f68b044c21cbc89acbe
Author: A. Jiang <de34@live.cn>
Date: Tue Jan 14 23:26:15 2025 +0800

[libc++] Fix `tuple_cat` for element with unconstrained constructor (#122433)

Currently, when the result type is 1-`tuple`, `tuple_cat` possibly tests
an undesired constructor of the element, due to conversion from the
reference tuple to the result type. If the element type has an
unconstrained constructor template, there can be extraneous hard error
which shouldn't happen.

This patch introduces a helper function template to select the element-wise
constructor template of `tuple`, which can avoid such error.

Fixes #41034.
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ldionne-old-macbook-results test results

Run Order Start Time Duration
Current 523780 2025-12-16T16:40:01 0:00:00
Previous 523779 2025-12-16T16:40:01 0:00:00
Baseline 485288 2025-12-16T16:40:01 0:00:00


Tests Summary

Status Group # # (B)
Performance Improvements 6 0
Added Tests 1 18
Unchanged Tests 83 72
Total Tests 90

Performance Improvements - execution_time Δ Previous Current σ Δ (B) σ (B)
734_vpr_r -2.83% 15.802 15.355 - 0.00% -
727_cppcheck_r -2.46% 24.909 24.296 - 0.00% -
710_omnetpp_r -2.27% 8.593 8.398 - 0.00% -
748_flightdm_r -2.04% 8.999 8.815 - 0.00% -
766_femflow_r -1.25% 12.936 12.775 - 0.00% -
707_ntest_r -1.24% 18.212 17.986 - 0.00% -

Added Tests - execution_time
735_gem5_r

Added Tests - execution_time
706_stockfish_r
707_ntest_r
709_cactus_r
710_omnetpp_r
721_gcc_r
723_llvm_r
727_cppcheck_r
729_abc_r
731_astcenc_r
734_vpr_r
735_gem5_r
736_ocio_r
737_gmsh_r
748_flightdm_r
750_sealcrypto_r
753_ns3_r
766_femflow_r
767_nest_r


Report Time: 0.09s
Name Current %
706_stockfish_r 22.039 -
707_ntest_r 17.986 -1.24%
709_cactus_r 19.699 -
710_omnetpp_r 8.398 -2.27%
721_gcc_r 12.910 -
723_llvm_r 11.501 -
727_cppcheck_r 24.296 -2.46%
729_abc_r 18.689 -
731_astcenc_r 10.054 -
734_vpr_r 15.355 -2.83%
735_gem5_r 13.684 -
736_ocio_r 16.394 -
737_gmsh_r 13.104 -
748_flightdm_r 8.815 -2.04%
750_sealcrypto_r 18.350 -
753_ns3_r 10.275 -
766_femflow_r 12.775 -1.25%
767_nest_r 14.161 -
Geometric Mean 14.272 -1.12%