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Hello!
We found that wasm-opt sometimes crashes with the error `Segmentation fault (core dumped)'.
What can help with debugging:
- We use wasm-opt together with tinygo.
- The error appears on a large project, if we remove any parts from this project in order to reduce the project, the error disappears. We couldn't make a minimal example to reproduce, and our project is proprietary and I can't give it.
- The error is not reproducible on mac, valid working configuration:
% tinygo version
tinygo version 0.37.0 darwin/amd64 (using go version go1.22.12 and LLVM version 19.1.2)
% /usr/local/bin/wasm-opt --version
wasm-opt version 117
- The error is consistently reproduced on linux on different hardware, with different operating systems, different versions of wasm-opt (tested 116 and 123).
- The error is reproduced only on your builds (https://github.com/WebAssembly/binaryen/releases). When I downloaded the project and built it myself, the error did not reproduce.
Own build, does not fall:
$ rm /tmp/tinygo3733807473/main.wasmopt
$ ls /tmp/tinygo3733807473/
main main.o
$ ./build/bin/wasm-opt --version
wasm-opt version 123 (version_123)
$ ./build/bin/wasm-opt -O2 -g /tmp/tinygo3733807473/main --output /tmp/tinygo3733807473/main.wasmopt
$ ls /tmp/tinygo3733807473/
main main.o main.wasmopt
Downloaded build of the same version crashes:
$ rm /tmp/tinygo3733807473/main.wasmopt
$ ls /tmp/tinygo3733807473/
main main.o
$ /opt/binaryen-version_123/bin/wasm-opt --version
wasm-opt version 123 (version_123)
$ /opt/binaryen-version_123/bin/wasm-opt -O2 -g /tmp/tinygo3733807473/main --output /tmp/tinygo3733807473/main.wasmopt
Segmentation fault (core dumped)
Thank you. Write to issue thread if you need more information.
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