[cxx-interop] Workaround a deserialization error for CxxStdlib on Linux #77843
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In certain versions of libstdc++, `std::hash<std::string>` defines `operator()` in a base class. It looks like Swift is not correctly deserializing an inherited `operator()` for inlinable functions. This change sidesteps the issue by moving the call to `callAsFunction`/`operator()` to the C++ shim layer. rdar://140358388
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@swift-ci please test |
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@swift-ci please build toolchain Ubuntu 24.04 |
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@swift-ci please build toolchain Ubuntu 22.04 |
Xazax-hun
approved these changes
Nov 26, 2024
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@swift-ci please build toolchain Ubuntu 24.04 |
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Merging to unblock nightly builds. |
hyp
added a commit
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Dec 13, 2024
…her platforms The PR #77857 added windows-specific workaround for #77856, that happened after #77843. Unfortunately this caused a new issue on windows - #78119. It looks like windows is suffering from a similar serialization issue as libstdc++, although its even more complex as the callAsFunction is not only a derived function from a base class, the base class although has a static call operator. In any case, the libstdc++ callAsFunction deserialization fix should align with the static operator () deserialization too, so for now make windows use the same workaround as other platforms to avoid the deserialization crash (77856). This change was tested on i686 windows too, ensuring that IR verifier crash no longer happens
hyp
added a commit
that referenced
this pull request
Dec 13, 2024
…her platforms The PR #77857 added windows-specific workaround for #77856, that happened after #77843. Unfortunately this caused a new issue on windows - #78119. It looks like windows is suffering from a similar serialization issue as libstdc++, although its even more complex as the callAsFunction is not only a derived function from a base class, the base class although has a static call operator. In any case, the libstdc++ callAsFunction deserialization fix should align with the static operator () deserialization too, so for now make windows use the same workaround as other platforms to avoid the deserialization crash (77856). This change was tested on i686 windows too, ensuring that IR verifier crash no longer happens
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In certain versions of libstdc++,
std::hash<std::string>definesoperator()in a base class. It looks like Swift is not correctly deserializing an inheritedoperator()for inlinable functions. This change sidesteps the issue by moving the call tocallAsFunction/operator()to the C++ shim layer.rdar://140358388