[Backport branch/3.1.x] Fix `__is_primary_std_template` for libc++ #6249

github-actions · 2025-10-15T14:22:32Z

Description

Backport of #6243 to branch/3.1.x.

We were using the wrong check, so that we would check for a specialization of `::cuda::std::iterator_traits` instead of `::std::iterator_traits` Fixes #6238 (cherry picked from commit 813e75e)

copy-pr-bot · 2025-10-15T14:22:36Z

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miscco · 2025-10-15T14:23:43Z

/ok to test c120a96

github-actions · 2025-10-15T16:51:07Z

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  🟩 nvcc               Pass: 100%/28  | Total:  4h 50m | Avg: 10m 22s | Max: 39m 10s | Hits:  82%/15126 
🟩 cxx
  🟩 Clang14            Pass: 100%/2   | Total: 11m 26s | Avg:  5m 43s | Max:  6m 28s | Hits:  90%/1168  
  🟩 Clang15            Pass: 100%/1   | Total:  5m 31s | Avg:  5m 31s | Max:  5m 31s | Hits:  90%/583   
  🟩 Clang16            Pass: 100%/1   | Total:  5m 31s | Avg:  5m 31s | Max:  5m 31s | Hits:  90%/583   
  🟩 Clang17            Pass: 100%/1   | Total:  5m 31s | Avg:  5m 31s | Max:  5m 31s | Hits:  90%/583   
  🟩 Clang18            Pass: 100%/1   | Total:  5m 27s | Avg:  5m 27s | Max:  5m 27s | Hits:  90%/583   
  🟩 Clang19            Pass: 100%/4   | Total: 27m 16s | Avg:  6m 49s | Max:  9m 57s | Hits:  92%/2332  
  🟩 GCC10              Pass: 100%/2   | Total: 12m 08s | Avg:  6m 04s | Max:  6m 41s | Hits:  90%/1168  
  🟩 GCC11              Pass: 100%/1   | Total:  6m 32s | Avg:  6m 32s | Max:  6m 32s | Hits:  89%/583   
  🟩 GCC12              Pass: 100%/1   | Total:  6m 21s | Avg:  6m 21s | Max:  6m 21s | Hits:  89%/583   
  🟩 GCC13              Pass: 100%/8   | Total: 52m 33s | Avg:  6m 34s | Max:  9m 54s | Hits:  92%/4664  
  🟩 MSVC14.39          Pass: 100%/1   | Total: 21m 47s | Avg: 21m 47s | Max: 21m 47s | Hits:  43%/282   
  🟩 MSVC14.43          Pass: 100%/3   | Total: 56m 30s | Avg: 18m 50s | Max: 19m 43s | Hits:  43%/852   
  🟩 NVHPC25.5          Pass: 100%/2   | Total:  1h 13m | Avg: 36m 58s | Max: 39m 10s | Hits:  23%/1162  
🟩 cxx_family
  🟩 Clang              Pass: 100%/10  | Total:  1h 00m | Avg:  6m 04s | Max:  9m 57s | Hits:  91%/5832  
  🟩 GCC                Pass: 100%/12  | Total:  1h 17m | Avg:  6m 27s | Max:  9m 54s | Hits:  91%/6998  
  🟩 MSVC               Pass: 100%/4   | Total:  1h 18m | Avg: 19m 34s | Max: 21m 47s | Hits:  43%/1134  
  🟩 NVHPC              Pass: 100%/2   | Total:  1h 13m | Avg: 36m 58s | Max: 39m 10s | Hits:  23%/1162  
🟩 gpu
  🟩 h100               Pass: 100%/2   | Total: 11m 09s | Avg:  5m 34s | Max:  6m 38s | Hits:  94%/1166  
  🟩 rtx2080            Pass: 100%/26  | Total:  4h 39m | Avg: 10m 44s | Max: 39m 10s | Hits:  81%/13960 
🟩 jobs
  🟩 Build              Pass: 100%/25  | Total:  4h 24m | Avg: 10m 33s | Max: 39m 10s | Hits:  80%/13377 
  🟩 Test               Pass: 100%/3   | Total: 26m 29s | Avg:  8m 49s | Max:  9m 57s | Hits:  99%/1749  
🟩 sm
  🟩 90                 Pass: 100%/2   | Total: 11m 09s | Avg:  5m 34s | Max:  6m 38s | Hits:  94%/1166  
  🟩 90;90a             Pass: 100%/2   | Total: 25m 07s | Avg: 12m 33s | Max: 18m 12s | Hits:  74%/867   
  🟩 100;120            Pass: 100%/2   | Total: 25m 33s | Avg: 12m 46s | Max: 19m 43s | Hits:  74%/867   
🟩 std
  🟩 17                 Pass: 100%/3   | Total: 46m 43s | Avg: 15m 34s | Max: 34m 46s | Hits:  67%/1747  
  🟩 20                 Pass: 100%/25  | Total:  4h 03m | Avg:  9m 45s | Max: 39m 10s | Hits:  84%/13379

🟩 packaging: Pass: 100%/4 | Total: 20m 54s | Avg: 5m 13s | Max: 7m 53s

🟩 cpu
  🟩 amd64              Pass: 100%/4   | Total: 20m 54s | Avg:  5m 13s | Max:  7m 53s
🟩 ctk
  🟩 12.0               Pass: 100%/2   | Total: 11m 29s | Avg:  5m 44s | Max:  7m 53s
  🟩 12.9               Pass: 100%/2   | Total:  9m 25s | Avg:  4m 42s | Max:  5m 33s
🟩 cudacxx
  🟩 nvcc12.0           Pass: 100%/2   | Total: 11m 29s | Avg:  5m 44s | Max:  7m 53s
  🟩 nvcc12.9           Pass: 100%/2   | Total:  9m 25s | Avg:  4m 42s | Max:  5m 33s
🟩 cudacxx_family
  🟩 nvcc               Pass: 100%/4   | Total: 20m 54s | Avg:  5m 13s | Max:  7m 53s
🟩 cxx
  🟩 Clang14            Pass: 100%/1   | Total:  3m 36s | Avg:  3m 36s | Max:  3m 36s
  🟩 Clang19            Pass: 100%/1   | Total:  3m 52s | Avg:  3m 52s | Max:  3m 52s
  🟩 GCC12              Pass: 100%/1   | Total:  7m 53s | Avg:  7m 53s | Max:  7m 53s
  🟩 GCC13              Pass: 100%/1   | Total:  5m 33s | Avg:  5m 33s | Max:  5m 33s
🟩 cxx_family
  🟩 Clang              Pass: 100%/2   | Total:  7m 28s | Avg:  3m 44s | Max:  3m 52s
  🟩 GCC                Pass: 100%/2   | Total: 13m 26s | Avg:  6m 43s | Max:  7m 53s
🟩 gpu
  🟩 rtx2080            Pass: 100%/4   | Total: 20m 54s | Avg:  5m 13s | Max:  7m 53s
🟩 jobs
  🟩 Test               Pass: 100%/4   | Total: 20m 54s | Avg:  5m 13s | Max:  7m 53s

🟩 stdpar: Pass: 100%/4 | Total: 18m 06s | Avg: 4m 31s | Max: 4m 46s

🟩 cpu
  🟩 amd64              Pass: 100%/2   | Total:  8m 44s | Avg:  4m 22s | Max:  4m 35s
  🟩 arm64              Pass: 100%/2   | Total:  9m 22s | Avg:  4m 41s | Max:  4m 46s
🟩 ctk
  🟩 12.9               Pass: 100%/4   | Total: 18m 06s | Avg:  4m 31s | Max:  4m 46s
🟩 cudacxx
  🟩 nvcc12.9           Pass: 100%/4   | Total: 18m 06s | Avg:  4m 31s | Max:  4m 46s
🟩 cudacxx_family
  🟩 nvcc               Pass: 100%/4   | Total: 18m 06s | Avg:  4m 31s | Max:  4m 46s
🟩 cxx
  🟩 NVHPC25.5          Pass: 100%/4   | Total: 18m 06s | Avg:  4m 31s | Max:  4m 46s
🟩 cxx_family
  🟩 NVHPC              Pass: 100%/4   | Total: 18m 06s | Avg:  4m 31s | Max:  4m 46s
🟩 gpu
  🟩 rtx2080            Pass: 100%/4   | Total: 18m 06s | Avg:  4m 31s | Max:  4m 46s
🟩 jobs
  🟩 Build              Pass: 100%/4   | Total: 18m 06s | Avg:  4m 31s | Max:  4m 46s
🟩 std
  🟩 17                 Pass: 100%/2   | Total:  8m 45s | Avg:  4m 22s | Max:  4m 36s
  🟩 20                 Pass: 100%/2   | Total:  9m 21s | Avg:  4m 40s | Max:  4m 46s

🟩 cccl_c_parallel: Pass: 100%/3 | Total: 26m 52s | Avg: 8m 57s | Max: 12m 56s | Hits: 96%/495

🟩 cpu
  🟩 amd64              Pass: 100%/3   | Total: 26m 52s | Avg:  8m 57s | Max: 12m 56s | Hits:  96%/495   
🟩 ctk
  🟩 12.9               Pass: 100%/3   | Total: 26m 52s | Avg:  8m 57s | Max: 12m 56s | Hits:  96%/495   
🟩 cudacxx
  🟩 nvcc12.9           Pass: 100%/3   | Total: 26m 52s | Avg:  8m 57s | Max: 12m 56s | Hits:  96%/495   
🟩 cudacxx_family
  🟩 nvcc               Pass: 100%/3   | Total: 26m 52s | Avg:  8m 57s | Max: 12m 56s | Hits:  96%/495   
🟩 cxx
  🟩 GCC13              Pass: 100%/3   | Total: 26m 52s | Avg:  8m 57s | Max: 12m 56s | Hits:  96%/495   
🟩 cxx_family
  🟩 GCC                Pass: 100%/3   | Total: 26m 52s | Avg:  8m 57s | Max: 12m 56s | Hits:  96%/495   
🟩 gpu
  🟩 h100               Pass: 100%/1   | Total: 10m 41s | Avg: 10m 41s | Max: 10m 41s | Hits:  98%/165   
  🟩 rtx2080            Pass: 100%/2   | Total: 16m 11s | Avg:  8m 05s | Max: 12m 56s | Hits:  94%/330   
🟩 jobs
  🟩 Build              Pass: 100%/1   | Total:  3m 15s | Avg:  3m 15s | Max:  3m 15s | Hits:  90%/165   
  🟩 Test               Pass: 100%/2   | Total: 23m 37s | Avg: 11m 48s | Max: 12m 56s | Hits:  98%/330

👃 Inspect Changes

Modifications in project?

	Project
	CCCL Infrastructure
	CCCL Packaging
+/-	libcu++
	CUB
	Thrust
	CUDA Experimental
	stdpar
	python
	CCCL C Parallel Library
	Catch2Helper

Modifications in project or dependencies?

	Project
	CCCL Infrastructure
+/-	CCCL Packaging
+/-	libcu++
+/-	CUB
+/-	Thrust
+/-	CUDA Experimental
+/-	stdpar
+/-	python
+/-	CCCL C Parallel Library
+/-	Catch2Helper

🏃‍ Runner counts (total jobs: 205)

#	Runner
128	`linux-amd64-cpu16`
23	`windows-amd64-cpu16`
14	`linux-amd64-gpu-h100-latest-1`
14	`linux-amd64-gpu-rtxa6000-latest-1`
12	`linux-arm64-cpu16`
11	`linux-amd64-gpu-rtx2080-latest-1`
3	`linux-amd64-gpu-rtx4090-latest-1`

miscco · 2025-10-15T17:13:49Z

/ok to test 8450526

github-actions · 2025-10-15T21:03:52Z

🟩 CI finished in 3h 47m: Pass: 100%/205 | Total: 2d 13h | Avg: 17m 56s | Max: 1h 45m | Hits: 83%/343753

🟩 cub: Pass: 100%/50 | Total: 20h 16m | Avg: 24m 19s | Max: 1h 40m | Hits: 93%/61506

🟩 cpu
  🟩 amd64              Pass: 100%/48  | Total: 19h 59m | Avg: 24m 59s | Max:  1h 40m | Hits:  93%/58998 
  🟩 arm64              Pass: 100%/2   | Total: 16m 21s | Avg:  8m 10s | Max:  8m 39s | Hits:  99%/2508  
🟩 ctk
  🟩 12.0               Pass: 100%/5   | Total:  2h 09m | Avg: 25m 50s | Max:  1h 40m | Hits:  92%/6166  
  🟩 12.9               Pass: 100%/45  | Total: 18h 06m | Avg: 24m 09s | Max:  1h 39m | Hits:  93%/55340 
🟩 cudacxx
  🟩 ClangCUDA19        Pass: 100%/2   | Total: 10m 32s | Avg:  5m 16s | Max:  5m 19s | Hits:  99%/2157  
  🟩 nvcc12.0           Pass: 100%/5   | Total:  2h 09m | Avg: 25m 50s | Max:  1h 40m | Hits:  92%/6166  
  🟩 nvcc12.9           Pass: 100%/43  | Total: 17h 56m | Avg: 25m 01s | Max:  1h 39m | Hits:  93%/53183 
🟩 cudacxx_family
  🟩 ClangCUDA          Pass: 100%/2   | Total: 10m 32s | Avg:  5m 16s | Max:  5m 19s | Hits:  99%/2157  
  🟩 nvcc               Pass: 100%/48  | Total: 20h 05m | Avg: 25m 07s | Max:  1h 40m | Hits:  93%/59349 
🟩 cxx
  🟩 Clang14            Pass: 100%/4   | Total: 26m 06s | Avg:  6m 31s | Max:  6m 57s | Hits:  99%/5018  
  🟩 Clang15            Pass: 100%/2   | Total: 13m 45s | Avg:  6m 52s | Max:  6m 54s | Hits:  99%/2505  
  🟩 Clang16            Pass: 100%/2   | Total: 13m 20s | Avg:  6m 40s | Max:  6m 46s | Hits:  99%/2505  
  🟩 Clang17            Pass: 100%/2   | Total: 13m 04s | Avg:  6m 32s | Max:  6m 38s | Hits:  99%/2505  
  🟩 Clang18            Pass: 100%/2   | Total: 13m 01s | Avg:  6m 30s | Max:  6m 42s | Hits:  99%/2505  
  🟩 Clang19            Pass: 100%/7   | Total:  1h 32m | Avg: 13m 10s | Max: 31m 16s | Hits:  99%/8421  
  🟩 GCC7               Pass: 100%/2   | Total: 16m 54s | Avg:  8m 27s | Max:  8m 27s | Hits:  99%/2508  
  🟩 GCC8               Pass: 100%/1   | Total:  8m 33s | Avg:  8m 33s | Max:  8m 33s | Hits:  99%/1254  
  🟩 GCC9               Pass: 100%/2   | Total: 17m 19s | Avg:  8m 39s | Max:  8m 59s | Hits:  99%/2508  
  🟩 GCC10              Pass: 100%/2   | Total: 18m 22s | Avg:  9m 11s | Max:  9m 14s | Hits:  99%/2509  
  🟩 GCC11              Pass: 100%/2   | Total: 17m 39s | Avg:  8m 49s | Max:  8m 59s | Hits:  99%/2505  
  🟩 GCC12              Pass: 100%/2   | Total: 18m 15s | Avg:  9m 07s | Max:  9m 09s | Hits:  99%/2505  
  🟩 GCC13              Pass: 100%/12  | Total:  4h 00m | Avg: 20m 03s | Max: 39m 20s | Hits:  99%/15057 
  🟩 MSVC14.29          Pass: 100%/2   | Total:  3h 15m | Avg:  1h 37m | Max:  1h 40m | Hits:  58%/2298  
  🟩 MSVC14.43          Pass: 100%/4   | Total:  5h 52m | Avg:  1h 28m | Max:  1h 39m | Hits:  58%/4596  
  🟩 NVHPC25.5          Pass: 100%/2   | Total:  2h 38m | Avg:  1h 19m | Max:  1h 21m | Hits:  55%/2307  
🟩 cxx_family
  🟩 Clang              Pass: 100%/19  | Total:  2h 51m | Avg:  9m 01s | Max: 31m 16s | Hits:  99%/23459 
  🟩 GCC                Pass: 100%/23  | Total:  5h 37m | Avg: 14m 40s | Max: 39m 20s | Hits:  99%/28846 
  🟩 MSVC               Pass: 100%/6   | Total:  9h 08m | Avg:  1h 31m | Max:  1h 40m | Hits:  58%/6894  
  🟩 NVHPC              Pass: 100%/2   | Total:  2h 38m | Avg:  1h 19m | Max:  1h 21m | Hits:  55%/2307  
🟩 gpu
  🟩 h100               Pass: 100%/3   | Total: 52m 36s | Avg: 17m 32s | Max: 25m 28s | Hits:  99%/3765  
  🟩 rtx2080            Pass: 100%/39  | Total: 15h 41m | Avg: 24m 08s | Max:  1h 40m | Hits:  91%/47707 
  🟩 rtxa6000           Pass: 100%/8   | Total:  3h 41m | Avg: 27m 43s | Max: 39m 20s | Hits:  99%/10034 
🟩 jobs
  🟩 Build              Pass: 100%/42  | Total: 16h 04m | Avg: 22m 57s | Max:  1h 40m | Hits:  92%/51470 
  🟩 DeviceLaunch       Pass: 100%/1   | Total: 37m 52s | Avg: 37m 52s | Max: 37m 52s | Hits:  99%/1255  
  🟩 GraphCapture       Pass: 100%/1   | Total: 31m 35s | Avg: 31m 35s | Max: 31m 35s | Hits:  99%/1255  
  🟩 HostLaunch         Pass: 100%/3   | Total:  1h 36m | Avg: 32m 01s | Max: 39m 20s | Hits:  99%/3763  
  🟩 TestGPU            Pass: 100%/3   | Total:  1h 26m | Avg: 28m 51s | Max: 36m 29s | Hits:  99%/3763  
🟩 sm
  🟩 90                 Pass: 100%/3   | Total: 52m 36s | Avg: 17m 32s | Max: 25m 28s | Hits:  99%/3765  
  🟩 90;90a             Pass: 100%/2   | Total:  1h 23m | Avg: 41m 31s | Max:  1h 15m | Hits:  80%/2404  
  🟩 100;120            Pass: 100%/2   | Total:  1h 28m | Avg: 44m 23s | Max:  1h 20m | Hits:  80%/2404  
🟩 std
  🟩 17                 Pass: 100%/21  | Total:  8h 23m | Avg: 23m 57s | Max:  1h 40m | Hits:  92%/25726 
  🟩 20                 Pass: 100%/29  | Total: 11h 53m | Avg: 24m 35s | Max:  1h 37m | Hits:  94%/35780

🟩 thrust: Pass: 100%/50 | Total: 16h 07m | Avg: 19m 21s | Max: 1h 45m | Hits: 90%/95771

🟩 cmake_options
  🟩 -DTHRUST_DISPATCH_TYPE=Force32bit Pass: 100%/2   | Total: 21m 02s | Avg: 10m 31s | Max: 12m 47s | Hits:  99%/3834  
🟩 cpu
  🟩 amd64              Pass: 100%/48  | Total: 15h 55m | Avg: 19m 53s | Max:  1h 45m | Hits:  90%/91938 
  🟩 arm64              Pass: 100%/2   | Total: 12m 34s | Avg:  6m 17s | Max:  7m 20s | Hits:  99%/3833  
🟩 ctk
  🟩 12.0               Pass: 100%/5   | Total:  1h 37m | Avg: 19m 29s | Max:  1h 12m | Hits:  86%/9575  
  🟩 12.9               Pass: 100%/45  | Total: 14h 30m | Avg: 19m 20s | Max:  1h 45m | Hits:  91%/86196 
🟩 cudacxx
  🟩 ClangCUDA19        Pass: 100%/2   | Total: 10m 59s | Avg:  5m 29s | Max:  5m 43s | Hits: 100%/3832  
  🟩 nvcc12.0           Pass: 100%/5   | Total:  1h 37m | Avg: 19m 29s | Max:  1h 12m | Hits:  86%/9575  
  🟩 nvcc12.9           Pass: 100%/43  | Total: 14h 19m | Avg: 19m 58s | Max:  1h 45m | Hits:  90%/82364 
🟩 cudacxx_family
  🟩 ClangCUDA          Pass: 100%/2   | Total: 10m 59s | Avg:  5m 29s | Max:  5m 43s | Hits: 100%/3832  
  🟩 nvcc               Pass: 100%/48  | Total: 15h 56m | Avg: 19m 55s | Max:  1h 45m | Hits:  90%/91939 
🟩 cxx
  🟩 Clang14            Pass: 100%/4   | Total: 22m 17s | Avg:  5m 34s | Max:  5m 50s | Hits: 100%/7664  
  🟩 Clang15            Pass: 100%/2   | Total: 12m 20s | Avg:  6m 10s | Max:  6m 25s | Hits: 100%/3832  
  🟩 Clang16            Pass: 100%/2   | Total: 12m 17s | Avg:  6m 08s | Max:  6m 10s | Hits: 100%/3832  
  🟩 Clang17            Pass: 100%/2   | Total: 11m 55s | Avg:  5m 57s | Max:  6m 06s | Hits:  99%/3832  
  🟩 Clang18            Pass: 100%/2   | Total: 11m 18s | Avg:  5m 39s | Max:  5m 57s | Hits:  99%/3832  
  🟩 Clang19            Pass: 100%/7   | Total: 47m 03s | Avg:  6m 43s | Max: 11m 21s | Hits:  99%/13412 
  🟩 GCC7               Pass: 100%/2   | Total: 13m 22s | Avg:  6m 41s | Max:  7m 04s | Hits:  99%/3834  
  🟩 GCC8               Pass: 100%/1   | Total:  7m 16s | Avg:  7m 16s | Max:  7m 16s | Hits:  99%/1917  
  🟩 GCC9               Pass: 100%/2   | Total: 15m 49s | Avg:  7m 54s | Max:  8m 05s | Hits:  99%/3834  
  🟩 GCC10              Pass: 100%/2   | Total: 14m 58s | Avg:  7m 29s | Max:  7m 42s | Hits:  99%/3834  
  🟩 GCC11              Pass: 100%/2   | Total: 15m 39s | Avg:  7m 49s | Max:  8m 08s | Hits:  99%/3834  
  🟩 GCC12              Pass: 100%/2   | Total: 15m 48s | Avg:  7m 54s | Max:  8m 02s | Hits:  99%/3834  
  🟩 GCC13              Pass: 100%/11  | Total:  1h 37m | Avg:  8m 51s | Max: 13m 03s | Hits:  99%/21087 
  🟩 MSVC14.29          Pass: 100%/2   | Total:  2h 26m | Avg:  1h 13m | Max:  1h 14m | Hits:  53%/3818  
  🟩 MSVC14.43          Pass: 100%/5   | Total:  5h 16m | Avg:  1h 03m | Max:  1h 19m | Hits:  60%/9545  
  🟩 NVHPC25.5          Pass: 100%/2   | Total:  3h 26m | Avg:  1h 43m | Max:  1h 45m | Hits:  19%/3830  
🟩 cxx_family
  🟩 Clang              Pass: 100%/19  | Total:  1h 57m | Avg:  6m 10s | Max: 11m 21s | Hits:  99%/36404 
  🟩 GCC                Pass: 100%/22  | Total:  3h 00m | Avg:  8m 11s | Max: 13m 03s | Hits:  99%/42174 
  🟩 MSVC               Pass: 100%/7   | Total:  7h 43m | Avg:  1h 06m | Max:  1h 19m | Hits:  58%/13363 
  🟩 NVHPC              Pass: 100%/2   | Total:  3h 26m | Avg:  1h 43m | Max:  1h 45m | Hits:  19%/3830  
🟩 gpu
  🟩 h100               Pass: 100%/2   | Total: 16m 41s | Avg:  8m 20s | Max: 11m 03s | Hits:  99%/3834  
  🟩 rtx2080            Pass: 100%/38  | Total: 12h 42m | Avg: 20m 04s | Max:  1h 45m | Hits:  88%/72786 
  🟩 rtx4090            Pass: 100%/10  | Total:  3h 08m | Avg: 18m 50s | Max:  1h 15m | Hits:  97%/19151 
🟩 jobs
  🟩 Build              Pass: 100%/43  | Total: 14h 25m | Avg: 20m 07s | Max:  1h 45m | Hits:  89%/82362 
  🟩 TestCPU            Pass: 100%/3   | Total: 54m 18s | Avg: 18m 06s | Max: 36m 37s | Hits:  99%/5742  
  🟩 TestGPU            Pass: 100%/4   | Total: 48m 14s | Avg: 12m 03s | Max: 13m 03s | Hits:  99%/7667  
🟩 sm
  🟩 90                 Pass: 100%/2   | Total: 16m 41s | Avg:  8m 20s | Max: 11m 03s | Hits:  99%/3834  
  🟩 90;90a             Pass: 100%/2   | Total:  1h 09m | Avg: 34m 50s | Max:  1h 02m | Hits:  70%/3826  
  🟩 100;120            Pass: 100%/2   | Total:  1h 09m | Avg: 34m 53s | Max:  1h 02m | Hits:  76%/3826  
🟩 std
  🟩 17                 Pass: 100%/21  | Total:  7h 26m | Avg: 21m 15s | Max:  1h 45m | Hits:  88%/40223 
  🟩 20                 Pass: 100%/27  | Total:  8h 20m | Avg: 18m 31s | Max:  1h 41m | Hits:  92%/51714

🟩 libcudacxx: Pass: 100%/48 | Total: 17h 21m | Avg: 21m 41s | Max: 1h 31m | Hits: 74%/170855

🟩 cpu
  🟩 amd64              Pass: 100%/46  | Total: 16h 28m | Avg: 21m 29s | Max:  1h 31m | Hits:  75%/163216
  🟩 arm64              Pass: 100%/2   | Total: 52m 50s | Avg: 26m 25s | Max: 26m 35s | Hits:  52%/7639  
🟩 ctk
  🟩 12.0               Pass: 100%/5   | Total:  1h 44m | Avg: 20m 56s | Max: 42m 48s | Hits:  61%/18732 
  🟩 12.9               Pass: 100%/43  | Total: 15h 36m | Avg: 21m 46s | Max:  1h 31m | Hits:  76%/152123
🟩 cudacxx
  🟩 ClangCUDA19        Pass: 100%/2   | Total: 58m 55s | Avg: 29m 27s | Max: 30m 58s | Hits:  29%/7605  
  🟩 nvcc12.0           Pass: 100%/5   | Total:  1h 44m | Avg: 20m 56s | Max: 42m 48s | Hits:  61%/18732 
  🟩 nvcc12.9           Pass: 100%/41  | Total: 14h 37m | Avg: 21m 24s | Max:  1h 31m | Hits:  78%/144518
🟩 cudacxx_family
  🟩 ClangCUDA          Pass: 100%/2   | Total: 58m 55s | Avg: 29m 27s | Max: 30m 58s | Hits:  29%/7605  
  🟩 nvcc               Pass: 100%/46  | Total: 16h 22m | Avg: 21m 21s | Max:  1h 31m | Hits:  76%/163250
🟩 cxx
  🟩 Clang14            Pass: 100%/4   | Total:  1h 08m | Avg: 17m 08s | Max: 27m 46s | Hits:  68%/15162 
  🟩 Clang15            Pass: 100%/2   | Total: 11m 29s | Avg:  5m 44s | Max:  5m 45s | Hits:  96%/7599  
  🟩 Clang16            Pass: 100%/2   | Total: 35m 07s | Avg: 17m 33s | Max: 30m 09s | Hits:  76%/7599  
  🟩 Clang17            Pass: 100%/2   | Total: 32m 12s | Avg: 16m 06s | Max: 27m 35s | Hits:  76%/7599  
  🟩 Clang18            Pass: 100%/2   | Total: 10m 38s | Avg:  5m 19s | Max:  5m 37s | Hits:  97%/7599  
  🟩 Clang19            Pass: 100%/6   | Total:  3h 28m | Avg: 34m 45s | Max:  1h 31m | Hits:  52%/22842 
  🟩 GCC7               Pass: 100%/2   | Total: 45m 11s | Avg: 22m 35s | Max: 23m 24s | Hits:  52%/7535  
  🟩 GCC8               Pass: 100%/1   | Total:  4m 50s | Avg:  4m 50s | Max:  4m 50s | Hits:  99%/3778  
  🟩 GCC9               Pass: 100%/2   | Total: 33m 30s | Avg: 16m 45s | Max: 28m 01s | Hits:  74%/7547  
  🟩 GCC10              Pass: 100%/2   | Total: 10m 32s | Avg:  5m 16s | Max:  5m 41s | Hits:  97%/7601  
  🟩 GCC11              Pass: 100%/2   | Total: 35m 16s | Avg: 17m 38s | Max: 30m 20s | Hits:  75%/7597  
  🟩 GCC12              Pass: 100%/2   | Total: 31m 14s | Avg: 15m 37s | Max: 25m 38s | Hits:  76%/7601  
  🟩 GCC13              Pass: 100%/11  | Total:  3h 05m | Avg: 16m 51s | Max: 33m 58s | Hits:  87%/30895 
  🟩 MSVC14.29          Pass: 100%/2   | Total:  1h 19m | Avg: 39m 36s | Max: 42m 48s | Hits:  63%/7275  
  🟩 MSVC14.43          Pass: 100%/4   | Total:  2h 32m | Avg: 38m 09s | Max: 38m 49s | Hits:  81%/15041 
  🟩 NVHPC25.5          Pass: 100%/2   | Total:  1h 36m | Avg: 48m 24s | Max: 49m 27s | Hits:  32%/7585  
🟩 cxx_family
  🟩 Clang              Pass: 100%/18  | Total:  6h 06m | Avg: 20m 21s | Max:  1h 31m | Hits:  71%/68400 
  🟩 GCC                Pass: 100%/22  | Total:  5h 46m | Avg: 15m 43s | Max: 33m 58s | Hits:  81%/72554 
  🟩 MSVC               Pass: 100%/6   | Total:  3h 51m | Avg: 38m 38s | Max: 42m 48s | Hits:  75%/22316 
  🟩 NVHPC              Pass: 100%/2   | Total:  1h 36m | Avg: 48m 24s | Max: 49m 27s | Hits:  32%/7585  
🟩 gpu
  🟩 h100               Pass: 100%/2   | Total: 23m 06s | Avg: 11m 33s | Max: 18m 17s | Hits:  99%/7806  
  🟩 rtx2080            Pass: 100%/46  | Total: 16h 58m | Avg: 22m 07s | Max:  1h 31m | Hits:  73%/163049
🟩 jobs
  🟩 Build              Pass: 100%/42  | Total: 13h 58m | Avg: 19m 57s | Max: 49m 27s | Hits:  73%/159271
  🟩 NVRTC              Pass: 100%/2   | Total:  1h 04m | Avg: 32m 20s | Max: 33m 58s | Hits:  90%/42    
  🟩 Test               Pass: 100%/3   | Total:  2h 16m | Avg: 45m 33s | Max:  1h 31m | Hits:  83%/11542 
  🟩 VerifyCodegen      Pass: 100%/1   | Total:  1m 37s | Avg:  1m 37s | Max:  1m 37s
🟩 sm
  🟩 75                 Pass: 100%/2   | Total:  1h 04m | Avg: 32m 20s | Max: 33m 58s | Hits:  90%/42    
  🟩 90                 Pass: 100%/2   | Total: 23m 06s | Avg: 11m 33s | Max: 18m 17s | Hits:  99%/7806  
  🟩 90;90a             Pass: 100%/2   | Total: 43m 21s | Avg: 21m 40s | Max: 37m 03s | Hits:  96%/7757  
  🟩 100;120            Pass: 100%/2   | Total: 43m 04s | Avg: 21m 32s | Max: 38m 07s | Hits:  89%/7757  
🟩 std
  🟩 17                 Pass: 100%/22  | Total:  7h 54m | Avg: 21m 34s | Max: 49m 27s | Hits:  71%/78923 
  🟩 20                 Pass: 100%/25  | Total:  9h 25m | Avg: 22m 36s | Max:  1h 31m | Hits:  77%/91932

🟩 cudax: Pass: 100%/28 | Total: 3h 29m | Avg: 7m 28s | Max: 34m 45s | Hits: 96%/15126

🟩 cpu
  🟩 amd64              Pass: 100%/24  | Total:  3h 16m | Avg:  8m 10s | Max: 34m 45s | Hits:  96%/12794 
  🟩 arm64              Pass: 100%/4   | Total: 12m 55s | Avg:  3m 13s | Max:  3m 33s | Hits:  99%/2332  
🟩 ctk
  🟩 12.0               Pass: 100%/3   | Total: 23m 31s | Avg:  7m 50s | Max: 16m 29s | Hits:  96%/1448  
  🟩 12.9               Pass: 100%/25  | Total:  3h 05m | Avg:  7m 25s | Max: 34m 45s | Hits:  96%/13678 
🟩 cudacxx
  🟩 nvcc12.0           Pass: 100%/3   | Total: 23m 31s | Avg:  7m 50s | Max: 16m 29s | Hits:  96%/1448  
  🟩 nvcc12.9           Pass: 100%/25  | Total:  3h 05m | Avg:  7m 25s | Max: 34m 45s | Hits:  96%/13678 
🟩 cudacxx_family
  🟩 nvcc               Pass: 100%/28  | Total:  3h 29m | Avg:  7m 28s | Max: 34m 45s | Hits:  96%/15126 
🟩 cxx
  🟩 Clang14            Pass: 100%/2   | Total:  6m 13s | Avg:  3m 06s | Max:  3m 24s | Hits: 100%/1168  
  🟩 Clang15            Pass: 100%/1   | Total:  3m 18s | Avg:  3m 18s | Max:  3m 18s | Hits:  99%/583   
  🟩 Clang16            Pass: 100%/1   | Total:  3m 27s | Avg:  3m 27s | Max:  3m 27s | Hits: 100%/583   
  🟩 Clang17            Pass: 100%/1   | Total:  3m 09s | Avg:  3m 09s | Max:  3m 09s | Hits: 100%/583   
  🟩 Clang18            Pass: 100%/1   | Total:  3m 06s | Avg:  3m 06s | Max:  3m 06s | Hits: 100%/583   
  🟩 Clang19            Pass: 100%/4   | Total: 20m 29s | Avg:  5m 07s | Max: 11m 29s | Hits:  99%/2332  
  🟩 GCC10              Pass: 100%/2   | Total:  7m 39s | Avg:  3m 49s | Max:  4m 13s | Hits:  99%/1168  
  🟩 GCC11              Pass: 100%/1   | Total:  3m 39s | Avg:  3m 39s | Max:  3m 39s | Hits:  99%/583   
  🟩 GCC12              Pass: 100%/1   | Total:  3m 48s | Avg:  3m 48s | Max:  3m 48s | Hits:  99%/583   
  🟩 GCC13              Pass: 100%/8   | Total:  1h 02m | Avg:  7m 52s | Max: 34m 45s | Hits:  98%/4664  
  🟩 MSVC14.39          Pass: 100%/1   | Total: 16m 29s | Avg: 16m 29s | Max: 16m 29s | Hits:  80%/282   
  🟩 MSVC14.43          Pass: 100%/3   | Total: 51m 48s | Avg: 17m 16s | Max: 17m 59s | Hits:  78%/852   
  🟩 NVHPC25.5          Pass: 100%/2   | Total: 23m 05s | Avg: 11m 32s | Max: 11m 49s | Hits:  87%/1162  
🟩 cxx_family
  🟩 Clang              Pass: 100%/10  | Total: 39m 42s | Avg:  3m 58s | Max: 11m 29s | Hits:  99%/5832  
  🟩 GCC                Pass: 100%/12  | Total:  1h 18m | Avg:  6m 30s | Max: 34m 45s | Hits:  98%/6998  
  🟩 MSVC               Pass: 100%/4   | Total:  1h 08m | Avg: 17m 04s | Max: 17m 59s | Hits:  79%/1134  
  🟩 NVHPC              Pass: 100%/2   | Total: 23m 05s | Avg: 11m 32s | Max: 11m 49s | Hits:  87%/1162  
🟩 gpu
  🟩 h100               Pass: 100%/2   | Total: 10m 00s | Avg:  5m 00s | Max:  6m 46s | Hits:  99%/1166  
  🟩 rtx2080            Pass: 100%/26  | Total:  3h 19m | Avg:  7m 39s | Max: 34m 45s | Hits:  96%/13960 
🟩 jobs
  🟩 Build              Pass: 100%/25  | Total:  2h 36m | Avg:  6m 14s | Max: 17m 59s | Hits:  96%/13377 
  🟩 Test               Pass: 100%/3   | Total: 53m 00s | Avg: 17m 40s | Max: 34m 45s | Hits:  96%/1749  
🟩 sm
  🟩 90                 Pass: 100%/2   | Total: 10m 00s | Avg:  5m 00s | Max:  6m 46s | Hits:  99%/1166  
  🟩 90;90a             Pass: 100%/2   | Total: 21m 32s | Avg: 10m 46s | Max: 17m 59s | Hits:  91%/867   
  🟩 100;120            Pass: 100%/2   | Total: 20m 33s | Avg: 10m 16s | Max: 16m 46s | Hits:  93%/867   
🟩 std
  🟩 17                 Pass: 100%/3   | Total: 17m 42s | Avg:  5m 54s | Max: 11m 16s | Hits:  95%/1747  
  🟩 20                 Pass: 100%/25  | Total:  3h 11m | Avg:  7m 39s | Max: 34m 45s | Hits:  97%/13379

🟩 python: Pass: 100%/18 | Total: 2h 57m | Avg: 9m 51s | Max: 19m 02s

🟩 cpu
  🟩 amd64              Pass: 100%/18  | Total:  2h 57m | Avg:  9m 51s | Max: 19m 02s
🟩 ctk
  🟩 12.9               Pass: 100%/18  | Total:  2h 57m | Avg:  9m 51s | Max: 19m 02s
🟩 cudacxx
  🟩 nvcc12.9           Pass: 100%/18  | Total:  2h 57m | Avg:  9m 51s | Max: 19m 02s
🟩 cudacxx_family
  🟩 nvcc               Pass: 100%/18  | Total:  2h 57m | Avg:  9m 51s | Max: 19m 02s
🟩 cxx
  🟩 GCC13              Pass: 100%/18  | Total:  2h 57m | Avg:  9m 51s | Max: 19m 02s
🟩 cxx_family
  🟩 GCC                Pass: 100%/18  | Total:  2h 57m | Avg:  9m 51s | Max: 19m 02s
🟩 gpu
  🟩 h100               Pass: 100%/8   | Total:  1h 11m | Avg:  8m 55s | Max: 14m 44s
  🟩 rtxa6000           Pass: 100%/10  | Total:  1h 46m | Avg: 10m 36s | Max: 19m 02s
🟩 jobs
  🟩 Build cuda.cccl    Pass: 100%/2   | Total: 16m 44s | Avg:  8m 22s | Max:  8m 26s
  🟩 Test cuda.cccl.cooperative Pass: 100%/4   | Total: 59m 33s | Avg: 14m 53s | Max: 19m 02s
  🟩 Test cuda.cccl.examples Pass: 100%/4   | Total: 19m 46s | Avg:  4m 56s | Max:  5m 17s
  🟩 Test cuda.cccl.headers Pass: 100%/4   | Total: 19m 10s | Avg:  4m 47s | Max:  5m 06s
  🟩 Test cuda.cccl.parallel Pass: 100%/4   | Total:  1h 02m | Avg: 15m 34s | Max: 16m 34s
🟩 py_version
  🟩 3.10               Pass: 100%/9   | Total:  1h 29m | Avg:  9m 55s | Max: 18m 34s
  🟩 3.13               Pass: 100%/9   | Total:  1h 28m | Avg:  9m 47s | Max: 19m 02s

🟩 packaging: Pass: 100%/4 | Total: 26m 21s | Avg: 6m 35s | Max: 8m 27s

🟩 cpu
  🟩 amd64              Pass: 100%/4   | Total: 26m 21s | Avg:  6m 35s | Max:  8m 27s
🟩 ctk
  🟩 12.0               Pass: 100%/2   | Total: 11m 54s | Avg:  5m 57s | Max:  8m 27s
  🟩 12.9               Pass: 100%/2   | Total: 14m 27s | Avg:  7m 13s | Max:  7m 40s
🟩 cudacxx
  🟩 nvcc12.0           Pass: 100%/2   | Total: 11m 54s | Avg:  5m 57s | Max:  8m 27s
  🟩 nvcc12.9           Pass: 100%/2   | Total: 14m 27s | Avg:  7m 13s | Max:  7m 40s
🟩 cudacxx_family
  🟩 nvcc               Pass: 100%/4   | Total: 26m 21s | Avg:  6m 35s | Max:  8m 27s
🟩 cxx
  🟩 Clang14            Pass: 100%/1   | Total:  3m 27s | Avg:  3m 27s | Max:  3m 27s
  🟩 Clang19            Pass: 100%/1   | Total:  7m 40s | Avg:  7m 40s | Max:  7m 40s
  🟩 GCC12              Pass: 100%/1   | Total:  8m 27s | Avg:  8m 27s | Max:  8m 27s
  🟩 GCC13              Pass: 100%/1   | Total:  6m 47s | Avg:  6m 47s | Max:  6m 47s
🟩 cxx_family
  🟩 Clang              Pass: 100%/2   | Total: 11m 07s | Avg:  5m 33s | Max:  7m 40s
  🟩 GCC                Pass: 100%/2   | Total: 15m 14s | Avg:  7m 37s | Max:  8m 27s
🟩 gpu
  🟩 rtx2080            Pass: 100%/4   | Total: 26m 21s | Avg:  6m 35s | Max:  8m 27s
🟩 jobs
  🟩 Test               Pass: 100%/4   | Total: 26m 21s | Avg:  6m 35s | Max:  8m 27s

🟩 stdpar: Pass: 100%/4 | Total: 15m 22s | Avg: 3m 50s | Max: 3m 58s

🟩 cpu
  🟩 amd64              Pass: 100%/2   | Total:  7m 51s | Avg:  3m 55s | Max:  3m 58s
  🟩 arm64              Pass: 100%/2   | Total:  7m 31s | Avg:  3m 45s | Max:  3m 51s
🟩 ctk
  🟩 12.9               Pass: 100%/4   | Total: 15m 22s | Avg:  3m 50s | Max:  3m 58s
🟩 cudacxx
  🟩 nvcc12.9           Pass: 100%/4   | Total: 15m 22s | Avg:  3m 50s | Max:  3m 58s
🟩 cudacxx_family
  🟩 nvcc               Pass: 100%/4   | Total: 15m 22s | Avg:  3m 50s | Max:  3m 58s
🟩 cxx
  🟩 NVHPC25.5          Pass: 100%/4   | Total: 15m 22s | Avg:  3m 50s | Max:  3m 58s
🟩 cxx_family
  🟩 NVHPC              Pass: 100%/4   | Total: 15m 22s | Avg:  3m 50s | Max:  3m 58s
🟩 gpu
  🟩 rtx2080            Pass: 100%/4   | Total: 15m 22s | Avg:  3m 50s | Max:  3m 58s
🟩 jobs
  🟩 Build              Pass: 100%/4   | Total: 15m 22s | Avg:  3m 50s | Max:  3m 58s
🟩 std
  🟩 17                 Pass: 100%/2   | Total:  7m 44s | Avg:  3m 52s | Max:  3m 53s
  🟩 20                 Pass: 100%/2   | Total:  7m 38s | Avg:  3m 49s | Max:  3m 58s

🟩 cccl_c_parallel: Pass: 100%/3 | Total: 24m 18s | Avg: 8m 06s | Max: 11m 34s | Hits: 98%/495

🟩 cpu
  🟩 amd64              Pass: 100%/3   | Total: 24m 18s | Avg:  8m 06s | Max: 11m 34s | Hits:  98%/495   
🟩 ctk
  🟩 12.9               Pass: 100%/3   | Total: 24m 18s | Avg:  8m 06s | Max: 11m 34s | Hits:  98%/495   
🟩 cudacxx
  🟩 nvcc12.9           Pass: 100%/3   | Total: 24m 18s | Avg:  8m 06s | Max: 11m 34s | Hits:  98%/495   
🟩 cudacxx_family
  🟩 nvcc               Pass: 100%/3   | Total: 24m 18s | Avg:  8m 06s | Max: 11m 34s | Hits:  98%/495   
🟩 cxx
  🟩 GCC13              Pass: 100%/3   | Total: 24m 18s | Avg:  8m 06s | Max: 11m 34s | Hits:  98%/495   
🟩 cxx_family
  🟩 GCC                Pass: 100%/3   | Total: 24m 18s | Avg:  8m 06s | Max: 11m 34s | Hits:  98%/495   
🟩 gpu
  🟩 h100               Pass: 100%/1   | Total: 10m 46s | Avg: 10m 46s | Max: 10m 46s | Hits:  98%/165   
  🟩 rtx2080            Pass: 100%/2   | Total: 13m 32s | Avg:  6m 46s | Max: 11m 34s | Hits:  98%/330   
🟩 jobs
  🟩 Build              Pass: 100%/1   | Total:  1m 58s | Avg:  1m 58s | Max:  1m 58s | Hits:  98%/165   
  🟩 Test               Pass: 100%/2   | Total: 22m 20s | Avg: 11m 10s | Max: 11m 34s | Hits:  98%/330

👃 Inspect Changes

Modifications in project?

	Project
	CCCL Infrastructure
	CCCL Packaging
+/-	libcu++
	CUB
	Thrust
	CUDA Experimental
	stdpar
	python
	CCCL C Parallel Library
	Catch2Helper

Modifications in project or dependencies?

	Project
	CCCL Infrastructure
+/-	CCCL Packaging
+/-	libcu++
+/-	CUB
+/-	Thrust
+/-	CUDA Experimental
+/-	stdpar
+/-	python
+/-	CCCL C Parallel Library
+/-	Catch2Helper

🏃‍ Runner counts (total jobs: 205)

#	Runner
128	`linux-amd64-cpu16`
23	`windows-amd64-cpu16`
14	`linux-amd64-gpu-h100-latest-1`
14	`linux-amd64-gpu-rtxa6000-latest-1`
12	`linux-arm64-cpu16`
11	`linux-amd64-gpu-rtx2080-latest-1`
3	`linux-amd64-gpu-rtx4090-latest-1`

Fix __is_primary_std_template for libc++ (#6243)

c120a96

We were using the wrong check, so that we would check for a specialization of `::cuda::std::iterator_traits` instead of `::std::iterator_traits` Fixes #6238 (cherry picked from commit 813e75e)

github-actions bot requested a review from a team as a code owner October 15, 2025 14:22

github-actions bot requested a review from griwes October 15, 2025 14:22

github-project-automation bot added this to CCCL Oct 15, 2025

github-project-automation bot moved this to Todo in CCCL Oct 15, 2025

github-actions bot mentioned this pull request Oct 15, 2025

Fix __is_primary_std_template for libc++ #6243

Merged

bernhardmgruber approved these changes Oct 15, 2025

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github-project-automation bot moved this from Todo to In Review in CCCL Oct 15, 2025

Merge branch 'branch/3.1.x' into backport-6243-to-branch/3.1.x

8450526

miscco merged commit 4892eff into branch/3.1.x Oct 16, 2025
215 checks passed

github-project-automation bot moved this from In Review to Done in CCCL Oct 16, 2025

miscco deleted the backport-6243-to-branch/3.1.x branch October 16, 2025 06:49

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[Backport branch/3.1.x] Fix __is_primary_std_template for libc++ #6249

[Backport branch/3.1.x] Fix __is_primary_std_template for libc++ #6249

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github-actions bot commented Oct 15, 2025

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🟨 python: Pass: 50%/18 | Total: 1h 35m | Avg: 5m 18s | Max: 19m 24s

🟩 cub: Pass: 100%/50 | Total: 2d 05h | Avg: 1h 04m | Max: 1h 49m | Hits: 36%/61506

🟩 thrust: Pass: 100%/50 | Total: 1d 14h | Avg: 46m 18s | Max: 1h 54m | Hits: 53%/95771

🟩 libcudacxx: Pass: 100%/48 | Total: 22h 26m | Avg: 28m 03s | Max: 1h 23m | Hits: 66%/170855

🟩 cudax: Pass: 100%/28 | Total: 4h 50m | Avg: 10m 22s | Max: 39m 10s | Hits: 82%/15126

🟩 packaging: Pass: 100%/4 | Total: 20m 54s | Avg: 5m 13s | Max: 7m 53s

🟩 stdpar: Pass: 100%/4 | Total: 18m 06s | Avg: 4m 31s | Max: 4m 46s

🟩 cccl_c_parallel: Pass: 100%/3 | Total: 26m 52s | Avg: 8m 57s | Max: 12m 56s | Hits: 96%/495

👃 Inspect Changes

Modifications in project?

Modifications in project or dependencies?

🏃‍ Runner counts (total jobs: 205)

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github-actions bot commented Oct 15, 2025

🟩 cub: Pass: 100%/50 | Total: 20h 16m | Avg: 24m 19s | Max: 1h 40m | Hits: 93%/61506

🟩 thrust: Pass: 100%/50 | Total: 16h 07m | Avg: 19m 21s | Max: 1h 45m | Hits: 90%/95771

🟩 libcudacxx: Pass: 100%/48 | Total: 17h 21m | Avg: 21m 41s | Max: 1h 31m | Hits: 74%/170855

🟩 cudax: Pass: 100%/28 | Total: 3h 29m | Avg: 7m 28s | Max: 34m 45s | Hits: 96%/15126

🟩 python: Pass: 100%/18 | Total: 2h 57m | Avg: 9m 51s | Max: 19m 02s

🟩 packaging: Pass: 100%/4 | Total: 26m 21s | Avg: 6m 35s | Max: 8m 27s

🟩 stdpar: Pass: 100%/4 | Total: 15m 22s | Avg: 3m 50s | Max: 3m 58s

🟩 cccl_c_parallel: Pass: 100%/3 | Total: 24m 18s | Avg: 8m 06s | Max: 11m 34s | Hits: 98%/495

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[Backport branch/3.1.x] Fix `__is_primary_std_template` for libc++ #6249

[Backport branch/3.1.x] Fix `__is_primary_std_template` for libc++ #6249