fs.watch on Mavericks => 'node test.js ' terminated by signal SIGBUS (Misaligned address error)

[ohardy]

fs = require('fs')
fs.watch('assets/js', function (curr, prev) {
  console.log('the current mtime is: ' + curr.mtime);
  console.log('the previous mtime was: ' + prev.mtime);
});

causes : 'node test.js ' terminated by signal SIGBUS (Misaligned address error)

[eendeego]

It crashes inside darwin's CFRunLoop code (invoking the callback...):

$ lldb node
Current executable set to 'node' (x86_64).
(lldb) settings set target.run-args test.js
(lldb) r
Process 89190 launched: '[redacted]/.nvm/v0.10.19/bin/node' (x86_64)
Process 89190 stopped
* thread #2: tid = 0x63294f, 0x00007fff8fc76583 CarbonCore`FSEventsClientProcessMessageCallback + 39, stop reason = EXC_BAD_ACCESS (code=2, address=0x100e43f48)
    frame #0: 0x00007fff8fc76583 CarbonCore`FSEventsClientProcessMessageCallback + 39
CarbonCore`FSEventsClientProcessMessageCallback + 39:
-> 0x7fff8fc76583:  callq  0x7fff8fc66d4d            ; FSEventsD2F_server
   0x7fff8fc76588:  movq   (%rbx), %rax
   0x7fff8fc7658b:  cmpq   -16(%rbp), %rax
   0x7fff8fc7658f:  jne    0x7fff8fc7659b            ; FSEventsClientProcessMessageCallback + 63
(lldb) bt
* thread #2: tid = 0x63294f, 0x00007fff8fc76583 CarbonCore`FSEventsClientProcessMessageCallback + 39, stop reason = EXC_BAD_ACCESS (code=2, address=0x100e43f48)
    frame #0: 0x00007fff8fc76583 CarbonCore`FSEventsClientProcessMessageCallback + 39
    frame #1: 0x00007fff90c2fd04 CoreFoundation`__CFMachPortPerform + 388
    frame #2: 0x00007fff90c2fb69 CoreFoundation`__CFRUNLOOP_IS_CALLING_OUT_TO_A_SOURCE1_PERFORM_FUNCTION__ + 41
    frame #3: 0x00007fff90c2fade CoreFoundation`__CFRunLoopDoSource1 + 478
    frame #4: 0x00007fff90c20bd6 CoreFoundation`__CFRunLoopRun + 1830
    frame #5: 0x00007fff90c20275 CoreFoundation`CFRunLoopRunSpecific + 309
    frame #6: 0x00007fff90cd59d1 CoreFoundation`CFRunLoopRun + 97
    frame #7: 0x000000010012f874 node`uv__cf_loop_runner(arg=<unavailable>) + 73 at fsevents.c:511
    frame #8: 0x00007fff96662899 libsystem_pthread.dylib`_pthread_body + 138
    frame #9: 0x00007fff9666272a libsystem_pthread.dylib`_pthread_start + 137
    frame #10: 0x00007fff96666fc9 libsystem_pthread.dylib`thread_start + 13

(About to test on v0.10.20, but expecting the exact same result)

[eendeego]

Confirmed on v0.10.20.
And on v0.11.7.

[eendeego]

This duplicates issue #6251.

[cryptix]

As a workaround you can downgrade to v0.10.17 until it is fixed.

[eendeego]

@cryptix Thanks!

[bnoordhuis]

Like you say, this is a dup of #6251 so I'm closing this one. FWIW, I reverted the post-v0.10.17 changes to libuv's FSEvents code.