Well here's the problem, gcc got too smart and optimized out the stack
buffer.
int
main (int argc, char **argv)
{
4074c0: 56 push %rsi
4074c1: 53 push %rbx
4074c2: 48 83 ec 28 sub $0x28,%rsp
4074c6: 89 cb mov %ecx,%ebx
4074c8: 48 89 d6 mov %rdx,%rsi
4074cb: e8 e0 d9 ff ff callq 404eb0 <__main>
reliably. This problem has been noticed under AllocationPreference
registry setting to 0x100000 (TOP_DOWN). */
char buf[CYGTLS_PADSIZE];
memset (buf, 0, sizeof (buf));
exit (main2 (argc, argv));
4074d0: 89 d9 mov %ebx,%ecx
4074d2: 48 89 f2 mov %rsi,%rdx
4074d5: e8 56 b0 ff ff callq 402530 <_Z5main2iPPc>
4074da: 89 c1 mov %eax,%ecx
4074dc: e8 57 fd ff ff callq 407238 <exit>
--
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