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From: "Wiktor S. (wswiktorSP AT Mpoczta DOT fm) [via djgpp AT delorie DOT com]" <djgpp AT delorie DOT com>
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Subject: Re: [ANNOUNCE] DJGPP port of gcc-6.1.0
Date: Mon, 9 May 2016 16:07:23 +0200
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// genautomata.c line 5816

static void
pass_state_graph (state_t start_state, void (*applied_func) (state_t state))
{
  arc_t arc;

  if (start_state->pass_num == curr_state_graph_pass_num)
    return;
  start_state->pass_num = curr_state_graph_pass_num;
  (*applied_func) (start_state);
  for (arc = first_out_arc (start_state);
       arc != NULL;
       arc = next_out_arc (arc))
    pass_state_graph (arc->to_state, applied_func); // <---- HERE
}


This is very deep recursion causing stack overflow.
After modifying genautomata.exe with stubedit and giving it 1 MB stack the 
problem disappears.

The question is why doesn't it crash in Vista. Probably Vista gives bigger 
stack by default.


-- 
Wiktor S.