Illegal Instruction in debug_build

[Michael Barker]

Hi,

I've been trying to run a debug build on Mac OS, the normal build
works fine, but the debug version fails with an Illegal Instruction.
I've run it through gdb (output below), but I not sure how accurate
the information is.  I think that it's the result of a stack overflow,
it takes around 2s to fail without any launch class specified.  Has
anyone witnessed anything similar?

stub:davinci mikeb01$ sources/build/bsd-amd64-debug/bin/java
Illegal instruction: 4

0x000000010199d2af in os::current_stack_pointer () at os_bsd_x86.cpp:284
284	  return (address) esp;
(gdb) disassemble
Dump of assembler code for function _ZN2os21current_stack_pointerEv:
0x000000010199d290 <_ZN2os21current_stack_pointerEv+0>:	push   %rbp
0x000000010199d291 <_ZN2os21current_stack_pointerEv+1>:	mov    %rsp,%rbp
0x000000010199d294 <_ZN2os21current_stack_pointerEv+4>:	mov    -0x18(%rbp),%rax
0x000000010199d298 <_ZN2os21current_stack_pointerEv+8>:	mov    %rax,%rsp
0x000000010199d29b <_ZN2os21current_stack_pointerEv+11>:	mov    %rsp,%rax
0x000000010199d29e <_ZN2os21current_stack_pointerEv+14>:	mov    %rax,-0x10(%rbp)
0x000000010199d2a2 <_ZN2os21current_stack_pointerEv+18>:	mov    -0x10(%rbp),%rax
0x000000010199d2a6 <_ZN2os21current_stack_pointerEv+22>:	mov    %rax,-0x8(%rbp)
0x000000010199d2aa <_ZN2os21current_stack_pointerEv+26>:	mov    -0x8(%rbp),%rax
0x000000010199d2ae <_ZN2os21current_stack_pointerEv+30>:	pop    %rbp
0x000000010199d2af <_ZN2os21current_stack_pointerEv+31>:	retq
End of assembler dump.
Current language:  auto; currently c++
(gdb) bt
#0  0x000000010199d2af in os::current_stack_pointer () at os_bsd_x86.cpp:284
(gdb) list
279	  register void *esp;
280	  __asm__("mov %%"SPELL_REG_SP", %0":"=r"(esp));
281	  return (address) ((char*)esp + sizeof(long)*2);
282	#else
283	  register void *esp __asm__ (SPELL_REG_SP);
284	  return (address) esp;
285	#endif
286	}
287	
288	char* os::non_memory_address_word() {

Mike.