[Bug rtl-optimization/16490] segfault while compiling with -fprofile-use

["belyshev at lubercy dot com" <gcc-bugzilla at gcc dot gnu dot org>]

------- Additional Comments From belyshev at lubercy dot com  2004-08-05 15:26 -------
small testcase, use "-O1 -funroll-loops -fvpt -fbranch-probabilities" :
------------------------------------------------------------------------------
void bar (int k)
{
  while (foo ())
    {
      while (k++ < 0)
	baz ();
    }
}
------------------------------------------------------------------------------

Program received signal SIGSEGV, Segmentation fault.
bitmap_operation (to=0xbfffec40, from1=0x0, from2=0x0, operation=BITMAP_XOR)
    at ../../gcc/gcc/bitmap.c:511
511       bitmap_element *from2_ptr = from2->first;
(gdb) where
#0  bitmap_operation (to=0xbfffec40, from1=0x0, from2=0x0, operation=BITMAP_XOR)
    at ../../gcc/gcc/bitmap.c:511
#1  0x0815e2f2 in init_propagate_block_info (bb=0x851ee28, live=0x0, local_set=0x0, 
    cond_local_set=0x0, flags=0) at ../../gcc/gcc/flow.c:1874
#2  0x0815e628 in propagate_block (bb=0x851ee28, live=0x851bcb8, local_set=0x0, 
    cond_local_set=0x0, flags=0) at ../../gcc/gcc/flow.c:2012
#3  0x080e5c32 in rtl_split_block (bb=0x851eef0, insnp=0xb7b997a0)
    at ../../gcc/gcc/cfgrtl.c:517
#4  0x080e8bf4 in cfg_layout_split_block (bb=0x0, insnp=0x0) at
../../gcc/gcc/cfgrtl.c:2420
#5  0x080e1814 in make_forwarder_block (bb=0x851eef0, redirect_latch=1,
redirect_nonlatch=0, 
    except=0x0, conn_latch=0) at ../../gcc/gcc/cfgloop.c:589
#6  0x080e1a84 in canonicalize_loop_headers () at ../../gcc/gcc/cfgloop.c:722
#7  0x080e1be9 in flow_loops_find (loops=0x8518514, flags=Variable "flags" is
not available.
) at ../../gcc/gcc/cfgloop.c:764
#8  0x082c4ef7 in loop_optimizer_init (dumpfile=0x0) at ../../gcc/gcc/loop-init.c:52
#9  0x08275912 in rest_of_handle_loop2 (decl=0x0, insns=0xb7b992e0)
    at ../../gcc/gcc/toplev.c:3074
#10 0x08276000 in rest_of_compilation (decl=0xb7ae8244) at
../../gcc/gcc/toplev.c:3364
#11 0x082b7214 in tree_rest_of_compilation (fndecl=0xb7ae8244, nested_p=false)
    at ../../gcc/gcc/tree-optimize.c:168
#12 0x0806b569 in c_expand_body_1 (fndecl=0xb7ae8244, nested_p=0)
    at ../../gcc/gcc/c-decl.c:6158
#13 0x0806b75d in c_expand_body (fndecl=0xb7ae8244) at ../../gcc/gcc/c-decl.c:6190
#14 0x082b96df in cgraph_expand_function (node=0xb7ae85e4) at
../../gcc/gcc/cgraphunit.c:538
#15 0x082b8ae3 in cgraph_assemble_pending_functions () at
../../gcc/gcc/cgraphunit.c:144
#16 0x082b8c04 in cgraph_finalize_function (decl=0xb7ae8244, nested=false)
    at ../../gcc/gcc/cgraphunit.c:225
#17 0x0806b451 in finish_function () at ../../gcc/gcc/c-decl.c:6115
#18 0x0804a806 in yyparse () at c-parse.y:385
#19 0x08052870 in c_parse_file () at c-parse.y:3029
#20 0x0809d425 in c_common_parse_file (set_yydebug=0) at ../../gcc/gcc/c-opts.c:1237
#21 0x082736c2 in compile_file () at ../../gcc/gcc/toplev.c:1822
#22 0x08277c5e in do_compile () at ../../gcc/gcc/toplev.c:4651
#23 0x08277cf3 in toplev_main (argc=0, argv=0xbffff8e4) at
../../gcc/gcc/toplev.c:4691
#24 0x080bc32c in main (argc=0, argv=0x0) at ../../gcc/gcc/main.c:35

Confirmed.

-- 
           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |NEW
     Ever Confirmed|                            |1
  GCC build triplet|ia64-redhat-linux           |
   GCC host triplet|ia64-redhat-linux           |
      Known to fail|                            |3.4.1 3.4.2
   Last reconfirmed|0000-00-00 00:00:00         |2004-08-05 15:26:05
               date|                            |


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=16490