[Bug middle-end/17044] [3.5 Regression] libgcc2.c:169: internal compiler error: Segmentation fault

["dave at hiauly1 dot hia dot nrc dot ca" <gcc-bugzilla at gcc dot gnu dot org>]

------- Additional Comments From dave at hiauly1 dot hia dot nrc dot ca  2004-08-17 17:38 -------
Subject: Re:  [3.5 Regression] libgcc2.c:169: internal c

> John -- if this is a problem building libgcc2.i with the stage1
> compiler, can you send me a backtrace at the failure point (again,
> I'm without access to my HPs for at least a week).

The exception occurs in the following call to free:

Breakpoint 13, 0x400000000031e350 in thread_block (bb=0x800003fffeacd8c0)
    at ../../gcc/gcc/tree-ssa-threadupdate.c:381
381           free (rd);
(gdb) bt
#0  0x400000000031e350 in thread_block (bb=0x800003fffeacd8c0)
    at ../../gcc/gcc/tree-ssa-threadupdate.c:381
#1  0x400000000031e418 in thread_through_all_blocks ()
    at ../../gcc/gcc/tree-ssa-threadupdate.c:415
#2  0x40000000002daeb4 in tree_ssa_dominator_optimize ()
    at ../../gcc/gcc/tree-ssa-dom.c:365
#3  0x40000000002205ac in execute_one_pass (pass=0x8000000100000f38)
    at ../../gcc/gcc/tree-optimize.c:453
#4  0x40000000002206d8 in execute_pass_list (pass=0x8000000100000f38)
    at ../../gcc/gcc/tree-optimize.c:478
#5  0x4000000000220718 in execute_pass_list (pass=0x8000000100000950)
    at ../../gcc/gcc/tree-optimize.c:479
#6  0x4000000000220b74 in tree_rest_of_compilation (
    fndecl=0x800003fffeaf3000, nested_p=0 '\0')
    at ../../gcc/gcc/tree-optimize.c:556
#7  0x40000000001285a4 in c_expand_body (fndecl=0x800003fffeaf3000)
    at ../../gcc/gcc/c-decl.c:6397
#8  0x40000000007f60c8 in cgraph_expand_function (node=0x800003fffeac6b60)
    at ../../gcc/gcc/cgraphunit.c:801
#9  0x40000000007f99c4 in cgraph_expand_all_functions ()
    at ../../gcc/gcc/cgraphunit.c:1673
#10 0x40000000007f9f8c in cgraph_optimize ()
    at ../../gcc/gcc/cgraphunit.c:1763
#11 0x4000000000129a78 in c_write_global_declarations ()
    at ../../gcc/gcc/c-decl.c:6711
#12 0x4000000000734940 in compile_file () at ../../gcc/gcc/toplev.c:989
#13 0x4000000000738194 in do_compile () at ../../gcc/gcc/toplev.c:2060
#14 0x40000000007382a8 in toplev_main (argc=45, argv=0x800003fffeff0830)
    at ../../gcc/gcc/toplev.c:2092
#15 0x40000000001d467c in main (argc=-2147482625, argv=0x800003fffeac85a0)
    at ../../gcc/gcc/main.c:35

Dave


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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=17044