[all-commits] [llvm/llvm-project] 5ca2b9: [flang-rt][cuda] Skip scope-exit cleanup when the ...

[Zhen Wang via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 5ca2b9313c4f33385aa60c554cb36f76bef67e55
      https://github.com/llvm/llvm-project/commit/5ca2b9313c4f33385aa60c554cb36f76bef67e55
  Author: Zhen Wang <zhenw at nvidia.com>
  Date:   2026-07-31 (Fri, 31 Jul 2026)

  Changed paths:
    M flang-rt/lib/cuda/allocator.cpp
    M flang/test/Lower/CUDA/cuda-return01.cuf

  Log Message:
  -----------
  [flang-rt][cuda] Skip scope-exit cleanup when the context has a sticky error (#213184)

A sticky CUDA error (e.g. an illegal memory access in a kernel) leaves
the primary context active but unusable, so CUFDeviceIsActive() reports
it as fine and the compiler-generated scope-exit frees abort a program
that ran to completion: 'cudaFree(p)' failed with
'cudaErrorIllegalAddress'.

Detect this by freeing a null pointer, a no-op that still reports the
sticky error. It runs only once the primary context is known active, so
it cannot lazily create one.



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