refactor: make dup3 wrapper call the real dup3 #2268
Merged
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What does this PR do
Pick up #960, closes #939
Before this PR, we were emulating
dup3()
withdup2()
andfcntl()
, and thus can cause a race condition, this PR makes thedup3()
wrapper involve the realdup3()
.Checklist:
CONTRIBUTING.md