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* [Bug lto/56495] New: ICE in lto_output_tree with -g -flto -O2
@ 2013-03-01 14:40 spammeup2011 at googlemail dot com
  2013-03-01 14:47 ` [Bug lto/56495] " spammeup2011 at googlemail dot com
                   ` (3 more replies)
  0 siblings, 4 replies; 5+ messages in thread
From: spammeup2011 at googlemail dot com @ 2013-03-01 14:40 UTC (permalink / raw)
  To: gcc-bugs


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=56495

             Bug #: 56495
           Summary: ICE in lto_output_tree with -g -flto -O2
    Classification: Unclassified
           Product: gcc
           Version: 4.8.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: lto
        AssignedTo: unassigned@gcc.gnu.org
        ReportedBy: spammeup2011@googlemail.com


GCC segfaults while compiling the attached code from Parma Polyhedra Library.
The testcase is huge, but reducing it led to a testcase that only failed in 1
of 10 cases or so. The error message sometimes changed to "tree code '(some
garbage)' is not supported in LTO streams" but i could not reproduce that one. 
GCC 4.8.0 20130301 fails while GCC 4.7.2 works.

Compiler output:
gcc -O2 -flto -g -s ppl.ii 
ppl_c_Rational_Box.cc: In function
'Parma_Polyhedra_Library::operator>(Parma_Polyhedra_Library::Linear_Expression
const&, __gmp_expr<__mpz_struct [1], __mpz_struct [1]> const&)':
ppl_c_Rational_Box.cc:1781:8302: internal compiler error: Segmentation fault
Please submit a full bug report,
with preprocessed source if appropriate.
See <http://bugs.gentoo.org/> for instructions.

Backtrace:
Program received signal SIGSEGV, Segmentation fault.
lto_output_tree (ob=0x1ece9d0, expr=0xe000000000049, ref_p=true, 
    this_ref_p=true) at ../.././gcc/lto-streamer-out.c:371
371    ../.././gcc/lto-streamer-out.c: No such file or directory.
(gdb) bt
#0  lto_output_tree (ob=0x1ece9d0, expr=0xe000000000049, ref_p=true, 
    this_ref_p=true) at ../.././gcc/lto-streamer-out.c:371
#1  0x00000000009ed78b in write_ts_block_tree_pointers (ref_p=true, 
    expr=0x7ffff491ca80, ob=0x1ece9d0) at ../.././gcc/tree-streamer-out.c:760
#2  streamer_write_tree_body (ob=0x1ece9d0, expr=0x7ffff491ca80, 
    ref_p=<optimized out>) at ../.././gcc/tree-streamer-out.c:887
#3  0x00000000008194fd in lto_write_tree (ref_p=true, expr=0x7ffff491ca80, 
    ob=0x1ece9d0) at ../.././gcc/lto-streamer-out.c:321
#4  lto_output_tree (ob=0x1ece9d0, expr=0x7ffff491ca80, ref_p=<optimized out>, 
    this_ref_p=<optimized out>) at ../.././gcc/lto-streamer-out.c:410
#5  0x00000000009ed176 in write_ts_common_tree_pointers (ref_p=true, 
    expr=0x7fffe85aa0f0, ob=0x1ece9d0) at ../.././gcc/tree-streamer-out.c:514
#6  streamer_write_tree_body (ob=0x1ece9d0, expr=0x7fffe85aa0f0, 
    ref_p=<optimized out>) at ../.././gcc/tree-streamer-out.c:845
#7  0x00000000008194fd in lto_write_tree (ref_p=true, expr=0x7fffe85aa0f0, 
    ob=0x1ece9d0) at ../.././gcc/lto-streamer-out.c:321
#8  lto_output_tree (ob=ob@entry=0x1ece9d0, expr=0x7fffe85aa0f0, 
    ref_p=ref_p@entry=true, this_ref_p=this_ref_p@entry=true)
    at ../.././gcc/lto-streamer-out.c:410
#9  0x00000000009ed82b in write_ts_exp_tree_pointers (ref_p=<optimized out>, 
    expr=<optimized out>, ob=<optimized out>)
    at ../.././gcc/tree-streamer-out.c:747
#10 streamer_write_tree_body (ob=0x1ece9d0, expr=0x7fffe858d880, 
---Type <return> to continue, or q <return> to quit---
    ref_p=<optimized out>) at ../.././gcc/tree-streamer-out.c:884
#11 0x00000000008194fd in lto_write_tree (ref_p=true, expr=0x7fffe858d880, 
    ob=0x1ece9d0) at ../.././gcc/lto-streamer-out.c:321
#12 lto_output_tree (ob=0x1ece9d0, expr=0x7fffe858d880, ref_p=<optimized out>, 
    this_ref_p=<optimized out>) at ../.././gcc/lto-streamer-out.c:410
#13 0x00000000009ed7f5 in write_ts_exp_tree_pointers (ref_p=<optimized out>, 
    expr=<optimized out>, ob=<optimized out>)
    at ../.././gcc/tree-streamer-out.c:746
#14 streamer_write_tree_body (ob=0x1ece9d0, expr=0x7fffe85a39d8, 
    ref_p=<optimized out>) at ../.././gcc/tree-streamer-out.c:884
#15 0x00000000008194fd in lto_write_tree (ref_p=true, expr=0x7fffe85a39d8, 
    ob=0x1ece9d0) at ../.././gcc/lto-streamer-out.c:321
#16 lto_output_tree (ob=0x1ece9d0, expr=0x7fffe85a39d8, ref_p=<optimized out>, 
    this_ref_p=<optimized out>) at ../.././gcc/lto-streamer-out.c:410
#17 0x00000000009ed7f5 in write_ts_exp_tree_pointers (ref_p=<optimized out>, 
    expr=<optimized out>, ob=<optimized out>)
    at ../.././gcc/tree-streamer-out.c:746
#18 streamer_write_tree_body (ob=0x1ece9d0, expr=0x7fffe859a300, 
    ref_p=<optimized out>) at ../.././gcc/tree-streamer-out.c:884
#19 0x00000000008194fd in lto_write_tree (ref_p=true, expr=0x7fffe859a300, 
    ob=0x1ece9d0) at ../.././gcc/lto-streamer-out.c:321
#20 lto_output_tree (ob=ob@entry=0x1ece9d0, expr=0x7fffe859a300, 
    ref_p=ref_p@entry=true, this_ref_p=this_ref_p@entry=true)
---Type <return> to continue, or q <return> to quit---
    at ../.././gcc/lto-streamer-out.c:410
#21 0x00000000009ed936 in write_ts_decl_common_tree_pointers (ref_p=true, 
    expr=0x7fffe85ac5f0, ob=0x1ece9d0) at ../.././gcc/tree-streamer-out.c:584
#22 streamer_write_tree_body (ob=0x1ece9d0, expr=0x7fffe85ac5f0, 
    ref_p=<optimized out>) at ../.././gcc/tree-streamer-out.c:857
#23 0x00000000008194fd in lto_write_tree (ref_p=true, expr=0x7fffe85ac5f0, 
    ob=0x1ece9d0) at ../.././gcc/lto-streamer-out.c:321
#24 lto_output_tree (ob=0x1ece9d0, expr=0x7fffe85ac5f0, ref_p=<optimized out>, 
    this_ref_p=<optimized out>) at ../.././gcc/lto-streamer-out.c:410
#25 0x0000000000c468bf in output_gimple_stmt (stmt=0x7fffe7f80740, 
    ob=0x1ece9d0) at ../.././gcc/gimple-streamer-out.c:140
#26 output_bb (ob=0x1ece9d0, bb=0x7fffe7f6ea90, fn=0x7ffff1cbae60)
    at ../.././gcc/gimple-streamer-out.c:193
#27 0x000000000081a446 in output_function (node=0x7ffff1cdd6f0)
    at ../.././gcc/lto-streamer-out.c:823
#28 lto_output () at ../.././gcc/lto-streamer-out.c:987
#29 0x0000000000843bc8 in ipa_write_summaries_2 (
    pass=0x13d5560 <pass_ipa_lto_gimple_out>, state=0x1e859b0)
    at ../.././gcc/passes.c:2411
#30 0x0000000000844ac0 in ipa_write_summaries_1 (encoder=<optimized out>)
    at ../.././gcc/passes.c:2441
#31 ipa_write_summaries () at ../.././gcc/passes.c:2495
#32 0x00000000006a596c in ipa_passes () at ../.././gcc/cgraphunit.c:1905
---Type <return> to continue, or q <return> to quit---
#33 compile () at ../.././gcc/cgraphunit.c:1991
#34 0x00000000006a5a7a in finalize_compilation_unit ()
    at ../.././gcc/cgraphunit.c:2119
#35 0x000000000057a269 in cp_write_global_declarations ()
    at ../.././gcc/cp/decl2.c:4318
#36 0x00000000008d2a7d in compile_file () at ../.././gcc/toplev.c:557
#37 0x00000000008d44ea in do_compile () at ../.././gcc/toplev.c:1876
#38 toplev_main (argc=23, argv=0x7fffffffdab8) at ../.././gcc/toplev.c:1952
#39 0x0000003ed9421735 in __libc_start_main () from /lib64/libc.so.6
#40 0x0000000000518519 in _start ()


^ permalink raw reply	[flat|nested] 5+ messages in thread
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2013-03-01 14:40 [Bug lto/56495] New: ICE in lto_output_tree with -g -flto -O2 spammeup2011 at googlemail dot com
2013-03-01 14:47 ` [Bug lto/56495] " spammeup2011 at googlemail dot com
2013-03-04 15:33 ` rguenth at gcc dot gnu.org
2013-03-06 21:34 ` spammeup2011 at googlemail dot com
2013-03-07 10:06 ` rguenth at gcc dot gnu.org

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