Bug 38355 - ICE with -fipa-struct-reorg
Summary: ICE with -fipa-struct-reorg
Status: RESOLVED WONTFIX
Alias: None
Product: gcc
Classification: Unclassified
Component: tree-optimization (show other bugs)
Version: 4.3.3
: P3 normal
Target Milestone: 4.7.0
Assignee: Not yet assigned to anyone
URL:
Keywords: ice-on-valid-code, monitored
Depends on:
Blocks:
 
Reported: 2008-12-01 22:50 UTC by Debian GCC Maintainers
Modified: 2012-01-19 04:56 UTC (History)
12 users (show)

See Also:
Host:
Target:
Build:
Known to work:
Known to fail: 4.3.3, 4.4.0
Last reconfirmed: 2009-11-14 21:21:13

Attachments
preprocessed source (2.45 KB, text/x-c++src)
2008-12-01 22:50 UTC, Debian GCC Maintainers 		Details
View All Add an attachment (proposed patch, testcase, etc.)

Note You need to log in before you can comment on or make changes to this bug.
Description Debian GCC Maintainers 2008-12-01 22:50:24 UTC 
[forwarded from http://bugs.debian.org/PR498708]

seen with 4.3 branch and trunk 20081130, building without -fipa-struct-reorg works.

$ g++ -O3 -fwhole-program -fipa-struct-reorg xx.cc
xx.cc:289: internal compiler error: Segmentation fault
Please submit a full bug report,
with preprocessed source if appropriate.
See <file:///usr/share/doc/gcc-4.3/README.Bugs> for instructions.

$ g++ -O3 -fwhole-program -fipa-pta xx.cc
/usr/include/c++/4.3/bits/vector.tcc: In member function 'void std::vector<_Tp, _Alloc>::_M_insert_aux(__gnu_cxx::__normal_iterator<typename std::_Vector_base<_Tp, _Alloc>::_Tp_alloc_type::pointer, std::vector<_Tp, _Alloc> >, const _Tp&) [with _Tp = int, _Alloc = std::allocator<int>]':
/usr/include/c++/4.3/bits/vector.tcc:283: internal compiler error: in initialize_flags_in_bb, at tree-into-ssa.c:437
Please submit a full bug report,
with preprocessed source if appropriate.
See <file:///usr/share/doc/gcc-4.3/README.Bugs> for instructions.
Comment 1 Debian GCC Maintainers 2008-12-01 22:50:45 UTC 
Created attachment 16804 [details]
preprocessed source
Comment 2 Andrew Pinski 2008-12-01 22:54:05 UTC 
-fipa-pta does nothing ...
Comment 3 Andrew Pinski 2008-12-01 22:55:50 UTC 

*** This bug has been marked as a duplicate of 32305 ***
Comment 4 Richard Biener 2008-12-02 11:05:11 UTC 
Re-opening as the -fipa-struct-reorg case.
Comment 5 Volker Reichelt 2009-11-14 21:21:12 UTC 
Confirmed.
Reduced testcase (crashes with "-O2 -fwhole-program -fipa-struct-reorg"):

=========================================================
template<int> struct A
{
  char c;
  void foo(int);
  void bar(int i) { foo(i+1); }
};

template<int> struct B : virtual A<0> {};

template<int T> inline void baz(B<T>& b, int i)
{
  if (i) b.bar(0);
}

extern template class A<0>;
extern template void baz(B<0>&, int);

int main()
{
  B<0> b;
  baz(b, 0);
  return 0;
}
=========================================================

GCC 4.3.x and 4.4.x segfault, while trunk produced the following ICE:

bug.cc:23:1: internal compiler error: in build_data_structure, at ipa-struct-reorg.c:3387
Please submit a full bug report, [etc.]
Comment 6 Andrew Pinski 2012-01-19 04:56:06 UTC 
The pass was removed by:
2011-03-23  Richard Guenther  <rguenther@suse.de>

        * Makefile.in (IPA_TYPE_ESCAPE_H): Remove.
        (OBJS-archive): Remove ipa-struct-reorg.o and ipa-type-escape.o.
        (tree-ssa-alias.o): Do not depend on IPA_TYPE_ESCAPE_H.
        (alias.o): Likewise.
        (ipa-type-escape.o): Remove.
        (ipa-struct-reorg.o): Likewise.
        (GTFILES): Remove ipa-struct-reorg.c.
        * alias.c: Do not include ipa-type-escape.h.
        * tree-ssa-alias.c: Likewise.
        * common.opt (fipa-struct-reorg): Preserve for backward compatibility.
        * opts.c (finish_options): Do not reset flag_ipa_struct_reorg.
        * passes.c (init_optimization_passes): Remove ipa-struct-reorg
        and ipa-type-escape passes.
        * tree-pass.h (pass_ipa_type_escape): Remove.
        (pass_ipa_struct_reorg): Likewise.

So closing as won't fix.