unix: Deprecate the POSIX-obsoleted tmpnam, tempnam - #5478
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`tmpnam` is TOCTOU-prone and not thread-safe if called with NULL, and has been marked obsolete by POSIX [1] and glibc [2]. `tempnam` is also TOCTOU-prone and marked obsolete by POSIX [3], and glib docs say "Never use this function". We don't have these on all platforms, but mark them deprecated where they still exist. Closes: rust-lang#5211 [1]: https://pubs.opengroup.org/onlinepubs/9799919799/functions/tmpnam.html [2]: https://man7.org/linux/man-pages/man3/tmpnam.3.html [3]: https://pubs.opengroup.org/onlinepubs/9699919799/functions/tempnam.html [4]: https://man7.org/linux/man-pages/man3/tempnam.3.html
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September 5, 2026 08:29
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tmpnamis TOCTOU-prone and not thread-safe if called with NULL, and has been marked obsolete by POSIX 1 and glibc 2.tempnamis also TOCTOU-prone and marked obsolete by POSIX 3, and glib docs say "Never use this function". We don't have these on all platforms, but mark them deprecated where they still exist.Closes: #5211