[WebAssembly] Define llvm-internal WasmEH tags in compiler-rt#160959
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[WebAssembly] Define llvm-internal WasmEH tags in compiler-rt#160959
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aheejin
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Sep 27, 2025
petrhosek
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Sep 30, 2025
The `__c_longjmp` and `__cpp_exceptions` tags are used internally by llvm to implement setjmp/longjmp and C++ exception handling respectively. These symbols were previously defined weakly in each object file but were recently converted to external references in llvm#159143. They now need to be defined somewhere in the runtime libraries. I think compiler-rt is likely the most sensible place for them.
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LLVM Buildbot has detected a new failure on builder Full details are available at: https://lab.llvm.org/buildbot/#/builders/10/builds/14580 Here is the relevant piece of the build log for the reference |
mahesh-attarde
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Oct 3, 2025
…60959) The `__c_longjmp` and `__cpp_exceptions` tags are used internally by llvm to implement setjmp/longjmp and C++ exception handling respectively. These symbols were previously defined weakly in each object file but were recently converted to external references in llvm#159143. They now need to be defined somewhere in the runtime libraries. I think compiler-rt is likely the most sensible place for them.
Contributor
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CMakeLists.txt says |
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Thanks for the report, I uploaded #161875 |
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The
__c_longjmpand__cpp_exceptionstags are used internally by llvm to implement setjmp/longjmp and C++ exception handling respectively.These symbols were previously defined weakly in each object file but were recently converted to external references in #159143. They now need to be defined somewhere in the runtime libraries. I think compiler-rt is likely the most sensible place for them.