[Bug debug/50006] [4.7 Regression] ICE in in connect_traces, at dwarf2cfi.c:2677

["danglin at gcc dot gnu.org" <gcc-bugzilla at gcc dot gnu dot org>]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=50006

--- Comment #1 from John David Anglin <danglin at gcc dot gnu.org> 2011-08-08 13:01:14 UTC ---
(gdb) ignor 1 79
Will ignore next 79 crossings of breakpoint 1.
(gdb) r
Starting program: /home/gnu/gcc/objdir/gcc/gnat1 -gnatwa -quiet -dumpbase
s-os_lib.adb -auxbase-strip s-os_lib.o -O2 -Wextra -Wall -fPIC
-frandom-seed=fixed-seed -g -gnatpg -gnatO s-os_lib.o s-os_lib.adb -o
s-os_lib.s
warning: The shared libraries were not privately mapped; setting a
breakpoint in a shared library will not work until you rerun the program.


Breakpoint 1, execute_dwarf2_frame () at ../../gcc/gcc/dwarf2cfi.c:2677
2677          gcc_assert (!ti->args_size_undefined);
(gdb) bt
#0  execute_dwarf2_frame () at ../../gcc/gcc/dwarf2cfi.c:2677
#1  0x004e62bc in execute_one_pass (pass=0x400092e8)
    at ../../gcc/gcc/passes.c:2063
#2  0x004e6600 in execute_pass_list (pass=0x400092e8)
    at ../../gcc/gcc/passes.c:2118
#3  0x004e6614 in execute_pass_list (pass=0x4000b200)
    at ../../gcc/gcc/passes.c:2119
#4  0x004e6614 in execute_pass_list (pass=0x4000b234)
    at ../../gcc/gcc/passes.c:2119
#5  0x007374f8 in tree_rest_of_compilation (fndecl=0x7a543700)
    at ../../gcc/gcc/tree-optimize.c:420
#6  0x003e58c8 in cgraph_expand_function (node=0x7ab853c0)
    at ../../gcc/gcc/cgraphunit.c:1803
#7  0x003e7264 in cgraph_optimize () at ../../gcc/gcc/cgraphunit.c:1862
#8  0x003e7754 in cgraph_finalize_compilation_unit ()
    at ../../gcc/gcc/cgraphunit.c:1310
#9  0x0005cf38 in gnat_write_global_declarations ()
    at ../../gcc/gcc/ada/gcc-interface/utils.c:4733
#10 0x005017f0 in toplev_main (argc=0, argv=0x0) at ../../gcc/gcc/toplev.c:564
#11 0x003b1214 in main (argc=0, argv=0x79f59ed0) at ../../gcc/gcc/main.c:36
(gdb) p ti
$1 = (dw_trace_info *) 0x4086a144
(gdb) p *ti
$2 = {head = 0x79f6ad98, beg_row = 0x79f59f30, end_row = 0x79f59f48, 
  beg_true_args_size = 0, end_true_args_size = 0, beg_delay_args_size = 0, 
  end_delay_args_size = 0, eh_head = 0x79f673e8, cfa_store = {offset = -576, 
    base_offset = 0, reg = 30, indirect = 0, in_use = 0}, cfa_temp = {
    offset = 0, base_offset = 0, reg = 3, indirect = 0, in_use = 0}, 
  regs_saved_in_regs = 0x0, id = 3, switch_sections = 0 '\0', 
  args_size_undefined = 1 '\001'}