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Is it safe to use 'unsafeDupablePerformIO' for decoding/encoding? #163

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hasufell opened this issue Jul 16, 2022 · 0 comments
Open

Is it safe to use 'unsafeDupablePerformIO' for decoding/encoding? #163

hasufell opened this issue Jul 16, 2022 · 0 comments
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@hasufell
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In GitLab by @maerwald on Jul 17, 2022, 04:47

It is said that unsafePerformIO is single-threaded, but unsafeDupablePerformIO can break bracket-like functions. Yet, bytestring uses it with unsafeWithForeignPtr.

Similar discussion here haskell/unix#157 (comment)

Use sites: https://gitlab.haskell.org/haskell/filepath/-/blob/c7d80e16e71bc1c85f4cd6158a96f2be6de64a1c/System/OsString/Common.hs#L113-124
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