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git_commit commit 81b20e110b3ffeb6d7069e7fe3e6339e63f8c03d
Author: Roland McGrath <mcgrathr@google.com>
Date: Tue May 13 12:23:50 2025 -0700

[libc++] Work around new GCC 15 type_traits builtins that can't be used as Clang's can (#137871)

GCC 15 has added builtins for various C++ type traits that Clang
already had. Since `__has_builtin(...)` now finds these, the #if
branches previously only used for Clang are now used for GCC 15.
However, GCC 15 requires that these builtins only be used in type
aliases, not in template aliases.

For now, just don't use the `__has_builtin(...)` branches under newer
GCC versions, so both 14 and 15 work during the transition. This
can be cleaned up later to use all the GCC 15 builtins available.

Fixed: #137704
Fixed: #117319
Filter

ldionne-old-macbook-results test results

Run Order Start Time Duration
Current 537401 2025-12-16T16:40:01 0:00:00
Previous 537247 2025-12-16T16:40:01 0:00:00
Baseline 485288 2025-12-16T16:40:01 0:00:00


Tests Summary

Status Group # # (B)
Performance Regressions 3 0
Performance Improvements 5 0
Added Tests 1 18
Unchanged Tests 81 72
Total Tests 90

Performance Regressions - execution_time Δ Previous Current σ Δ (B) σ (B)
723_llvm_r 1.51% 11.459 11.632 - 0.00% -
707_ntest_r 1.11% 17.865 18.064 - 0.00% -
727_cppcheck_r 1.06% 24.611 24.872 - 0.00% -

Performance Improvements - execution_time Δ Previous Current σ Δ (B) σ (B)
710_omnetpp_r -3.90% 8.817 8.473 - 0.00% -
734_vpr_r -1.54% 15.576 15.336 - 0.00% -
737_gmsh_r -1.37% 13.132 12.952 - 0.00% -
767_nest_r -1.16% 14.225 14.060 - 0.00% -
729_abc_r -1.02% 18.664 18.473 - 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: 0.06s
Name Current %
706_stockfish_r 22.207 -
707_ntest_r 18.064 1.11%
709_cactus_r 19.687 -
710_omnetpp_r 8.473 -3.90%
721_gcc_r 12.946 -
723_llvm_r 11.632 1.51%
727_cppcheck_r 24.872 1.06%
729_abc_r 18.473 -1.02%
731_astcenc_r 10.072 -
734_vpr_r 15.336 -1.54%
735_gem5_r 13.981 -
736_ocio_r 16.262 -
737_gmsh_r 12.952 -1.37%
748_flightdm_r 9.004 -
750_sealcrypto_r 18.381 -
753_ns3_r 10.600 -
766_femflow_r 12.936 -
767_nest_r 14.060 -1.16%
Geometric Mean 14.357 -