lily crash: access violation in page breaking

[Nicolas Sceaux]

Hi,

The following snippet causes lilypond to crash:

{
  \pageBreak
  c''1
  \break
  c''1
}

Program received signal EXC_BAD_ACCESS, Could not access memory.
Reason: KERN_PROTECTION_FAILURE at address: 0x00000000
0x000e4b10 in Page_breaking::break_into_pieces (this=0xbfffc528, 
start_break=79066720, end_break=0, address@hidden) at page-breaking.cc:89
89                vector<Column_x_positions> pos = 
line_breaking_[sys].get_solution (start, end, div[i]);
(gdb) 

In Optimal_page_breaking::solve ():
  vsize min_sys_count = min_system_count (0, end); // ==> 3
  vsize max_sys_count = max_system_count (0, end); // ==> 2

nicolas