bun crashed.

[maxvonhippel]

How can we reproduce the crash?

I did this a gajillion times in a row on different things

// Helper function to check if a module can be imported - synchronous version
function canImportModule(moduleName: string): boolean {
    // Add debug logging
    console.log('Resolving:', {
        moduleName,
        cwd: process.cwd(),
    });

    // Check cache first to ensure consistent results
    if (moduleCache.has(moduleName)) {
        return moduleCache.get(moduleName)!;
    }
    
    // Prevent infinite recursion
    if (processingModules.has(moduleName)) {
        return true;
    }
    processingModules.add(moduleName);

    // Trust built-in modules (both Node.js and Bun)
    const bareModuleName = moduleName.replace(/^(node:|bun:)/, '');
    if (builtinModules.includes(bareModuleName)) {
        processingModules.delete(moduleName);
        moduleCache.set(moduleName, true);
        return true;
    }

    try {
        // First, try to resolve as a package
        const resolvedPath = require.resolve(moduleName, {
            paths: [process.cwd()]
        });
        
        // If it resolves to node_modules, trust it completely
        if (resolvedPath.includes('node_modules')) {
            console.log('Resolved to node_modules:', resolvedPath);
            processingModules.delete(moduleName);
            moduleCache.set(moduleName, true);
            return true;
        }

        // For non-node_modules resolutions, continue with validation
        const imports = extractImports(resolvedPath);
        const allImportsValid = imports.every(imp => {
            // Resolve relative imports relative to the current file
            if (imp.startsWith('.')) {
                const dir = path.dirname(resolvedPath);
                return canImportModule(path.resolve(dir, imp));
            }
            return canImportModule(imp);
        });

        processingModules.delete(moduleName);
        moduleCache.set(moduleName, allImportsValid);
        return allImportsValid;

    } catch (error) {
        // If resolution fails, it's not a valid import
        processingModules.delete(moduleName);
        moduleCache.set(moduleName, false);
        return false;
    }
}

and it seg faulted

Relevant log output

Stack Trace (bun.report)

Bun v1.1.30 (7996d06) on macos aarch64 [TestCommand]

Segmentation fault at address 0x00000008

• 1 unknown/js code
• ??
• ??
• ??
• ??
• ??
• ??
• ??
• ??
• ??

Features: bunfig, jsc, transpiler_cache, tsconfig

_{Sentry Issue: BUN-22K}

[github-actions]

@maxvonhippel, the latest version of Bun is v1.2.5, but this crash was reported on Bun v1.1.30.

Are you able to reproduce this crash on the latest version of Bun?

bun upgrade