Fix segfaults caused by modifying existing shared library #295
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When the built shared library is copied to the correct location, it actually *modifies* any existing shared library, which causes any running process using it to segfault. To fix this, we first delete any existing shared library (which is safe to do) and then copy the newly built shared library to the correct location as a new file. Related to PyO3#257
erikjohnston
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Sep 29, 2022
Co-authored-by: Adam Reichold <adamreichold@users.noreply.github.com>
adamreichold
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Sep 29, 2022
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Thank you for the review! ❤️ |
davidhewitt
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Thanks, logic looks good to me, could you just add a CHANGELOG entry please? Then let's merge 👍
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I've added some words to the changelog, though I don't think I really expressed it well. |
davidhewitt
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That's great as-is - thanks! 👍
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@davidhewitt: any chance of a release to include this change? It caused a significant outage for us today :(. |
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Sorry for the delay on release here. I'll try to put live tomorrow. |
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See #331 |
netbsd-srcmastr
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## 1.6.0 (2023-04-27) ### Changed - Prefer passing `--crate-type` option to cargo if "toolchain >= 1.64". [#322](PyO3/setuptools-rust#322) ### Fixed - Fix a bug where rebuilding the library would cause any running processes using it to segfault. [#295](PyO3/setuptools-rust#295) - Fix `setup.cfg` format for compatibility with "poetry==1.4.0". [#319](PyO3/setuptools-rust#319)
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Thank you! ❤️ |
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When the built shared library is copied to the correct location, it actually modifies any existing shared library, which causes any running process using it to segfault.
To fix this, we first delete any existing shared library (which is safe to do) and then copy the newly built shared library to the correct location as a new file.
Related to #257
At least, this is the behaviour on Linux, I'm not sure about other OSes.