Random Bun test failures

[smiasojed]

Sometimes tests fail when executed with bun

105 | }
106 | return new Uint8Array(result, 0, uncompressedSize);
107 | }
108 | return uncompress(base64DecToArr(source), uncompressedSize);})(
109 | "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 | ... truncated 
110 | 22654108);var Module=typeof Module!="undefined"?Module:{};var moduleOverrides=Object.assign({},Module);var arguments_=[];var thisProgram="./this.program";var quit_=(status,toThrow)=>{throw toThrow};var ENVIRONMENT_IS_WEB=typeof window=="object";var ENVIRONMENT_IS_WORKER=typeof importScripts=="function";var ENVIRONMENT_IS_NODE=typeof process=="object"&&typeof process.versions=="object"&&typeof process.versions.node=="string";var scriptDirectory="";function locateFile(path){if(Module["locateFile"]){return Module["locateFile"](path,scriptDirectory)}return scriptDirectory+path}var read_,readAsync,readBinary,setWindowTitle;function logExceptionOnExit(e){if(e instanceof ExitStatus)return;let toLog=e;err("exiting due to exception: "+toLog)}var fs;var nodePath;var requireNodeFS;if(ENVIRONMENT_IS_NODE){if(ENVIRONMENT_IS_WORKER){scriptDirectory=require("path").dirname(scriptDirectory)+"/"}else{scriptDirectory=__dirname+"/"}requireNodeFS=()=>{if(!nodePath){fs=require("fs");nodePath=require("path")}};read_=function shell | ... truncated 

RuntimeError: Out of bounds memory access (evaluating 'getWasmTableEntry(index)(a1, a2, a3)')
      at invoke_viii (/home/smiasojed/Development/bun-wasm-issue/soljson.js:110:37401)
      at ccall (/home/smiasojed/Development/bun-wasm-issue/soljson.js:110:28447)
      at <anonymous> (/home/smiasojed/Development/bun-wasm-issue/soljson.js:110:28838)
      at <anonymous> (/home/smiasojed/Development/bun-wasm-issue/compile.js:22:68)

[xermicus]

As discussed off-band: This is only reproducible on Linux and the culprit is might be code from solc. So we just create a minimal reproducer (using only solc if the bug stems from there) and open an issue in bun.

[smiasojed]

It looks like this happens just after or during Module initialization. It looks like a race condition. Once initialization passes, we can call the compilation thousands of times without any issues. I see that in Bun initialisation is faster than in Node.js case.

[smiasojed]

Anyway issue is created: oven-sh/bun#17146 . I think it would be worth triaging the Emscripten module initialization and experimenting with compilation options like DYNAMIC_EXECUTION and WASM_ASYNC_COMPILATION.