JSC_useJIT=0 segfaults

[CanadaHonk]

How can we reproduce the crash?

running any code with JSC_useJIT=0 set instantly segfaults. not using it or setting it to 1 works fine. BUN_JSC_useJIT=0 works fine. not important but probably worth knowing about.

JSC_useJIT=0 bun -e '1'

Relevant log output

Stack Trace (bun.report)

Bun v1.2.22 (6bafe26) on linux x86_64 [AutoCommand]

Segmentation fault at address 0x00000030

• ??
• VM.cpp:426: JSC::VM::VM
• VM.cpp:567: JSC::VM::tryCreate
• ZigGlobalObject.cpp:939: Zig__GlobalObject__create
• JSGlobalObject.zig:820: bun.js.VirtualMachine.init
• bun.js.zig:165: bun.js.Run.boot
• cli.zig:1408: cli.Command.bun --eval --print
• cli.zig:883: cli.Command.start
• cli.zig:20: cli.Cli.start
• main.zig:60: main

Features: jsc

[linear]

ENG-20588 JSC_useJIT=0 segfaults

[github-actions]

Thank you for reporting this crash.

For Bun's internal tracking, this issue is BUN-WXA.

[nektro]

if this is blocking you, the correct option to use is BUN_JSC_useJIT=0