Process:         straightliner.opt [95277]
Path:            /Users/USER/*/straightliner.opt
Identifier:      straightliner.opt
Version:         0
Code Type:       X86-64 (Native)
Parent Process:  bash [88978]
User ID:         501

Date/Time:       2013-11-24 21:17:55.779 +0100
OS Version:      Mac OS X 10.8.5 (12F45)
Report Version:  10

Crashed Thread:  0  Dispatch queue: com.apple.main-thread

Exception Type:  EXC_BAD_ACCESS (SIGSEGV)
Exception Codes: EXC_I386_GPFLT

Thread 0 Crashed:: Dispatch queue: com.apple.main-thread
0   straightliner.opt             0x00000001026a510c caml_alloc_shr + 524
1   straightliner.opt             0x00000001026a5424 caml_alloc + 228
2   straightliner.opt             0x00000001026aa66b caml_make_vect + 235
3   straightliner.opt             0x00000001025e5547 .L402 + 19
4   ???                           0x00000001045e4f48 0 + 4368256840

Thread 1:
0   libsystem_kernel.dylib         0x00007fff94ed36d6 __workq_kernreturn +
10
1   libsystem_c.dylib             0x00007fff8f398f1c _pthread_workq_return
+ 25
2   libsystem_c.dylib             0x00007fff8f398ce3 _pthread_wqthread + 412
3   libsystem_c.dylib             0x00007fff8f383191 start_wqthread + 13

Thread 2:: Dispatch queue: com.apple.libdispatch-manager
0   libsystem_kernel.dylib         0x00007fff94ed3d16 kevent + 10
1   libdispatch.dylib             0x00007fff93ecedea _dispatch_mgr_invoke +
883
2   libdispatch.dylib             0x00007fff93ece9ee _dispatch_mgr_thread +
54

Thread 3:
0   libsystem_kernel.dylib         0x00007fff94ed36d6 __workq_kernreturn +
10
1   libsystem_c.dylib             0x00007fff8f398f1c _pthread_workq_return
+ 25
2   libsystem_c.dylib             0x00007fff8f398ce3 _pthread_wqthread + 412
3   libsystem_c.dylib             0x00007fff8f383191 start_wqthread + 13

Thread 0 crashed with X86 Thread State (64-bit):
  rax: 0x0000000007e6b3fe  rbx: 0x00000000000000fe  rcx: 0x0000000007e6b000
 rdx: 0x00000001056dfb50
  rdi: 0x00000000000fcd68  rsi: 0xbef24186d0048200  rbp: 0x00007fff5d7e8e00
 rsp: 0x00007fff5d7e8dd0
   r8: 0x017de4830dafd66c   r9: 0x002fbc9061b5facd  r10: 0x00007fff5d7e8c98
 r11: 0x00000001028ba668
  r12: 0x00000001025e5547  r13: 0x000000010446af98  r14: 0x000000000001f9ac
 r15: 0x017de484131dcf98
  rip: 0x00000001026a510c  rfl: 0x0000000000010206  cr2: 0x00000001028afeb8
Logical CPU: 0


seems men alloc related, I do not compile with -unsafe or -noassert
been a while I haven't used ocaml on mac, before was on os x 10.6.8 and
godi.
does it remind something to someone ?
tried using -thread, no change.

regards.