Bun segfaulting in claude-code, thought you should know

Bug Description

This appears to be a bug report for Bun, not for Claude Code, however the issue I filed there was auto-closed as "wont do" (or something) by a claudebot. This has killed dozens of my claude sessions in the past ~week.

Bun v1.3.14 ([521eedd](<https://github.com/oven-sh/bun/tree/521eedd6d864da985b337786eafbdc467827126f>)) on linux x86_64_baseline [StandaloneExecutable]

Segmentation fault at address 0x00000000

• [ld-temp.o:0](<https://github.com/oven-sh/bun/blob/521eedd6d864da985b337786eafbdc467827126f/ld-temp.o#L0>): llint_call_javascript
• [Interpreter.cpp:1311](<https://github.com/oven-sh/WebKit/blob/bun-521eedd6d864da985b337786eafbdc467827126f/Source/JavaScriptCore/interpreter/Interpreter.cpp#L1311>): JSC::Interpreter::executeCallImpl
• [CallData.cpp:70](<https://github.com/oven-sh/WebKit/blob/bun-521eedd6d864da985b337786eafbdc467827126f/Source/JavaScriptCore/runtime/CallData.cpp#L70>): JSC::call
• [JSBoundFunction.cpp:71](<https://github.com/oven-sh/WebKit/blob/bun-521eedd6d864da985b337786eafbdc467827126f/Source/JavaScriptCore/runtime/JSBoundFunction.cpp#L71>): JSC::boundThisNoArgsFunctionCall
• [ld-temp.o:0](<https://github.com/oven-sh/bun/blob/521eedd6d864da985b337786eafbdc467827126f/ld-temp.o#L0>): vmEntryToNative
• [JSMicrotask.cpp:202](<https://github.com/oven-sh/WebKit/blob/bun-521eedd6d864da985b337786eafbdc467827126f/Source/JavaScriptCore/runtime/JSMicrotask.cpp#L202>): _ZN3JSCL13callMicrotaskIJEQfraasr3stdE16is_convertible_vIT_NS_7JSValueEEEES2_PNS_14JSGlobalObjectES2_S2_PNS_6JSCellEN3WTF12ASCIILiteralEPNS_13MicrotaskCallEDpS1_
• [JSMicrotask.cpp:2059](<https://github.com/oven-sh/WebKit/blob/bun-521eedd6d864da985b337786eafbdc467827126f/Source/JavaScriptCore/runtime/JSMicrotask.cpp#L2059>): JSC::runInternalMicrotask
• [MicrotaskQueue.cpp:61](<https://github.com/oven-sh/WebKit/blob/bun-521eedd6d864da985b337786eafbdc467827126f/Source/JavaScriptCore/runtime/MicrotaskQueue.cpp#L61>): JSC::runMicrotask
• [MicrotaskQueue.cpp:193](<https://github.com/oven-sh/WebKit/blob/bun-521eedd6d864da985b337786eafbdc467827126f/Source/JavaScriptCore/runtime/MicrotaskQueue.cpp#L193>): std::pair<JSC::JSGlobalObject*, bool> JSC::MicrotaskQueue::drainImpl<true>
• [MicrotaskQueue.cpp:246](<https://github.com/oven-sh/WebKit/blob/bun-521eedd6d864da985b337786eafbdc467827126f/Source/JavaScriptCore/runtime/MicrotaskQueue.cpp#L246>): JSC::MicrotaskQueue::drainWithUseCallOnEachMicrotask
• [MicrotaskQueue.h:281](<https://github.com/oven-sh/bun/blob/521eedd6d864da985b337786eafbdc467827126f//webkitbuild/.JavaScriptCore/PrivateHeaders/JavaScriptCore/MicrotaskQueue.h#L281>): std::pair<JSC::JSGlobalObject*, bool> JSC::MicrotaskQueue::drain<true>
• [MicrotaskQueueInlines.h:118](<https://github.com/oven-sh/WebKit/blob/bun-521eedd6d864da985b337786eafbdc467827126f/Source/JavaScriptCore/runtime/MicrotaskQueueInlines.h#L118\>): _ZN3JSC14MicrotaskQueue26performMicrotaskCheckpointILb1ETkN3WTF9InvocableIFvPNS_14JSGlobalObjectES5_EEEZNS_2VM15drainMicrotasksEvE3$_0EEvRS7_RKT0_
• [VM.cpp:1452](<https://github.com/oven-sh/WebKit/blob/bun-521eedd6d864da985b337786eafbdc467827126f/Source/JavaScriptCore/runtime/VM.cpp#L1452>): JSC::VM::drainMicrotasks
• [BunProcess.cpp:3806](<https://github.com/oven-sh/bun/blob/521eedd6d864da985b337786eafbdc467827126f/src/jsc/bindings/BunProcess.cpp#L3806>): Bun::jsFunctionDrainMicrotaskQueue
• 2 unknown/js code
• [ld-temp.o:0](<https://github.com/oven-sh/bun/blob/521eedd6d864da985b337786eafbdc467827126f/ld-temp.o#L0>): llint_call_javascript
• [Interpreter.cpp:1311](<https://github.com/oven-sh/WebKit/blob/bun-521eedd6d864da985b337786eafbdc467827126f/Source/JavaScriptCore/interpreter/Interpreter.cpp#L1311>): JSC::Interpreter::executeCallImpl
• [CallData.cpp:70](<https://github.com/oven-sh/WebKit/blob/bun-521eedd6d864da985b337786eafbdc467827126f/Source/JavaScriptCore/runtime/CallData.cpp#L70>): JSC::call
• [CallData.cpp:55](<https://github.com/oven-sh/WebKit/blob/bun-521eedd6d864da985b337786eafbdc467827126f/Source/JavaScriptCore/runtime/CallData.cpp#L55>): JSC::call
• [CallData.cpp:43](<https://github.com/oven-sh/WebKit/blob/bun-521eedd6d864da985b337786eafbdc467827126f/Source/JavaScriptCore/runtime/CallData.cpp#L43>): JSC::call
• [JSNextTickQueue.cpp:96](<https://github.com/oven-sh/bun/blob/521eedd6d864da985b337786eafbdc467827126f/src/jsc/bindings/JSNextTickQueue.cpp#L96>): Bun::JSNextTickQueue::drain
• [ZigGlobalObject.cpp:3038](<https://github.com/oven-sh/bun/blob/521eedd6d864da985b337786eafbdc467827126f/src/jsc/bindings/ZigGlobalObject.cpp#L3038>): Zig::GlobalObject::drainMicrotasks
• [ZigGlobalObject.cpp:3062](<https://github.com/oven-sh/bun/blob/521eedd6d864da985b337786eafbdc467827126f/src/jsc/bindings/ZigGlobalObject.cpp#L3062>): JSC__JSGlobalObject__drainMicrotasks
• [event_loop.zig:135](<https://github.com/oven-sh/bun/blob/521eedd6d864da985b337786eafbdc467827126f/src/jsc/event_loop.zig#L135>): jsc.event_loop.drainMicrotasksWithGlobal

Features: spawn, standalone\_executable, yaml\_parse, claude\_code, Bun.stderr, Bun.stdin, Bun.stdout, WebSocket, abort\_signal, fetch, jsc

Environment Info

• Platform: linux
• Terminal: emacs
• Version: 2.1.150
• Feedback ID: cd0d0363-e5dc-42c4-9bf1-89938e131438

Errors

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