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| git_commit |
commit a5b3d3a03f3291b1b62c7c25bc40b494660421cb Author: Peng Liu <winner245@hotmail.com> Date: Wed Mar 19 11:55:51 2025 -0400 [libc++] Fix {std, ranges}::copy for vector<bool> with small storage types (#131545) The current implementation of `{std, ranges}::copy` fails to copy `vector<bool>` correctly when the underlying storage type (`__storage_type`) is smaller than `int`, such as `unsigned char`, `unsigned short`, `uint8_t` and `uint16_t`. The root cause is that the unsigned small storage type undergoes integer promotion to (signed) `int`, which is then left and right shifted, leading to UB (before C++20) and sign-bit extension (since C++20) respectively. As a result, the underlying bit mask evaluations become incorrect, causing erroneous copying behavior. This patch resolves the issue by correcting the internal bitwise operations, ensuring that `{std, ranges}::copy` operates correctly for `vector<bool>` with any custom (unsigned) storage types. Fixes #131692. |
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ldionne-old-macbook-results test results
| Run | Order | Start Time | Duration |
|---|---|---|---|
| Current | 531223 | 2025-12-16T16:40:01 | 0:00:00 |
| Previous | 531121 | 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 | 1 | 0 |
| Performance Improvements | 1 | 0 |
| Added Tests | 0 | 18 |
| Unchanged Tests | 88 | 72 |
| Total Tests | 90 |
| Performance Regressions - execution_time | Δ | Previous | Current | σ | Δ (B) | σ (B) |
|---|---|---|---|---|---|---|
| 727_cppcheck_r | 1.44% | 24.679 | 25.033 | - | 0.00% | - |
| Performance Improvements - execution_time | Δ | Previous | Current | σ | Δ (B) | σ (B) |
|---|---|---|---|---|---|---|
| 707_ntest_r | -2.20% | 18.282 | 17.879 | - | 0.00% | - |
| 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 |
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