[Bug middle-end/37500] New: [4.4 Regression] libstdc++ failed to compile at -O0

[Bug middle-end/37500] New: [4.4 Regression] libstdc++ failed to compile at -O0

[hjl dot tools at gmail dot com]

On Linux/x86-64, libstdc++ failed to compile at -O0:

[hjl@gnu-6 gcc-work]$ /export/build/gnu/gcc-work/build-x86_64-linux/./gcc/xgcc
-shared-libgcc -B/export/build/gnu/gcc-work/build-x86_64-linux/./gcc
-nostdinc++
-L/export/build/gnu/gcc-work/build-x86_64-linux/x86_64-unknown-linux-gnu/libstdc++-v3/src
-L/export/build/gnu/gcc-work/build-x86_64-linux/x86_64-unknown-linux-gnu/libstdc++-v3/src/.libs
-B/usr/gcc-4.4-work/x86_64-unknown-linux-gnu/bin/
-B/usr/gcc-4.4-work/x86_64-unknown-linux-gnu/lib/ -isystem
/usr/gcc-4.4-work/x86_64-unknown-linux-gnu/include -isystem
/usr/gcc-4.4-work/x86_64-unknown-linux-gnu/sys-include
-I/export/build/gnu/gcc-work/build-x86_64-linux/x86_64-unknown-linux-gnu/libstdc++-v3/include/x86_64-unknown-linux-gnu
-I/export/build/gnu/gcc-work/build-x86_64-linux/x86_64-unknown-linux-gnu/libstdc++-v3/include
-I/export/gnu/src/gcc-work/gcc/libstdc++-v3/libsupc++ -fno-implicit-templates
-Wall -Wextra -Wwrite-strings -Wcast-qual -fdiagnostics-show-location=once
-ffunction-sections -fdata-sections -g -O0 -D_GNU_SOURCE -c
/export/gnu/src/gcc-work/gcc/libstdc++-v3/src/compatibility.cc  -fPIC -DPIC -o
.libs/compatibility.o
/export/gnu/src/gcc-work/gcc/libstdc++-v3/src/compatibility.cc:408: internal
compiler error: Segmentation fault
Please submit a full bug report,
with preprocessed source if appropriate.
See <http://gcc.gnu.org/bugs.html> for instructions.
[hjl@gnu-6 gcc-work]$ 
Program received signal SIGSEGV, Segmentation fault.
0x00000000004ed628 in ggc_free (p=<value optimized out>)
    at ../../src-trunk/gcc/ggc-page.c:1421
1421        pe->in_use_p[word] &= ~(1UL << bit);
Missing separate debuginfos, use: debuginfo-install glibc.x86_64 gmp.x86_64
mpfr.x86_64
(gdb) bt
#0  0x00000000004ed628 in ggc_free (p=<value optimized out>)
    at ../../src-trunk/gcc/ggc-page.c:1421
#1  0x00000000005233c1 in flow_loops_free (loops=0xff0620)
    at ../../src-trunk/gcc/cfgloop.c:217
#2  0x0000000000a1d2eb in rest_of_handle_ira ()
    at ../../src-trunk/gcc/ira.c:1885
#3  0x00000000006374d8 in execute_one_pass (pass=0xf672a0)
    at ../../src-trunk/gcc/passes.c:1279
#4  0x0000000000637705 in execute_pass_list (pass=0xf672a0)
    at ../../src-trunk/gcc/passes.c:1327
#5  0x000000000063771d in execute_pass_list (pass=0xf625c0)
    at ../../src-trunk/gcc/passes.c:1328
#6  0x0000000000707487 in tree_rest_of_compilation (fndecl=0x7f3e946e2300)
    at ../../src-trunk/gcc/tree-optimize.c:418
#7  0x0000000000826554 in cgraph_expand_function (node=0x7f3e942d0700)
    at ../../src-trunk/gcc/cgraphunit.c:1038
#8  0x0000000000826764 in cgraph_output_in_order ()
    at ../../src-trunk/gcc/cgraphunit.c:1186
#9  0x0000000000827cfd in cgraph_optimize ()
    at ../../src-trunk/gcc/cgraphunit.c:1297
#10 0x0000000000451d6d in cp_write_global_declarations ()
    at ../../src-trunk/gcc/cp/decl2.c:3608
#11 0x00000000006cce81 in toplev_main (argc=<value optimized out>, 
---Type <return> to continue, or q <return> to quit---
    argv=<value optimized out>) at ../../src-trunk/gcc/toplev.c:979
#12 0x000000342da1e32a in __libc_start_main () from /lib64/libc.so.6
#13 0x0000000000404369 in _start ()
(gdb)


-- 
           Summary: [4.4 Regression] libstdc++ failed to compile at -O0
           Product: gcc
           Version: 4.4.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: middle-end
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: hjl dot tools at gmail dot com


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=37500

[Bug middle-end/37500] [4.4 Regression] libstdc++ failed to compile at -O0

[hjl dot tools at gmail dot com]

------- Comment #1 from hjl dot tools at gmail dot com  2008-09-12 19:42 -------
It is caused by revision 140285.


-- 

hjl dot tools at gmail dot com changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |jh at suse dot cz


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=37500

[Bug middle-end/37500] [4.4 Regression] libstdc++ failed to compile at -O0

[pinskia at gcc dot gnu dot org]

------- Comment #2 from pinskia at gcc dot gnu dot org  2008-09-12 20:33 -------
(In reply to comment #1)
> It is caused by revision 140285.

That does not mean there is a bug in IRA.

Can you attach the preprocessed source?


-- 

pinskia at gcc dot gnu dot org changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
 GCC target triplet|                            |x86_64-unknown-linux-gnu
           Keywords|                            |build, GC, ice-on-valid-code
   Target Milestone|---                         |4.4.0


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=37500

[Bug middle-end/37500] [4.4 Regression] libstdc++ failed to compile at -O0

[hjl dot tools at gmail dot com]

------- Comment #3 from hjl dot tools at gmail dot com  2008-09-12 21:17 -------
Created an attachment (id=16308)
 --> (http://gcc.gnu.org/bugzilla/attachment.cgi?id=16308&action=view)
A testcase

[hjl@gnu-6 gcc]$ ./xgcc -B./ -S /tmp/x.ii
/export/gnu/src/gcc-work/gcc/libstdc++-v3/src/compatibility.cc:202: internal
compiler error: Segmentation fault
Please submit a full bug report,
with preprocessed source if appropriate.
See <http://gcc.gnu.org/bugs.html> for instructions.
[hjl@gnu-6 gcc]$ 


-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=37500

[Bug middle-end/37500] [4.4 Regression] libstdc++ failed to compile at -O0

[pinskia at gcc dot gnu dot org]

------- Comment #4 from pinskia at gcc dot gnu dot org  2008-09-13 01:53 -------
g++.dg/cpp0x/variadic-tuple.C fails for me with an ICE during GC.


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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=37500

[Bug middle-end/37500] [4.4 Regression] libstdc++ failed to compile at -O0

[pinskia at gcc dot gnu dot org]

------- Comment #5 from pinskia at gcc dot gnu dot org  2008-09-13 03:52 -------
Here is a reduced testcase for the variadic-tuple.C failure.
Compile with --param ggc-min-expand=0 --param ggc-min-heapsize=0 -w:

namespace std __attribute__ ((__visibility__ ("default"))) {
  template<typename _CharT>     class basic_string;
  typedef basic_string<char> string;
  template<typename _CharT>
  struct basic_string     {
    void  _M_destroy() throw();
    basic_string(const char* __s);
    ~basic_string()       {
      _M_destroy();
    }
  };
  template<typename _CharT>   void basic_string<_CharT>:: _M_destroy() throw ()
    {   }
  extern template class basic_string<char>;
};
template<typename... Values> class tuple;
template<> class tuple<> { };
template<typename Head, typename... Tail> struct tuple<Head, Tail...> : private
tuple<Tail...>  {
  typedef tuple<Tail...> inherited;
  tuple()  {  }
  template<typename... VValues>   tuple(const tuple<VValues...>& other)
    :
    m_head(other.head())
    ,inherited(other.tail())
  {  }
  const Head &head() const {  }
  const inherited& tail() const {  }
  Head m_head;
};
int main() {
  tuple<int, float, const char*> t3a;
  tuple<long, double, std::string> t3b(t3a);
}


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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=37500

[Bug middle-end/37500] [4.4 Regression] libstdc++ failed to compile at -O0

[hubicka at gcc dot gnu dot org]

------- Comment #6 from hubicka at gcc dot gnu dot org  2008-09-13 07:31 -------
Subject: Bug 37500

Author: hubicka
Date: Sat Sep 13 07:30:15 2008
New Revision: 140334

URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=140334
Log:
        PR middle-end/37500
        * pt.c (tsubst_decl): Do not copy DECL_STRUCT_FUNCTION pointer.

Modified:
    trunk/gcc/cp/ChangeLog
    trunk/gcc/cp/pt.c


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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=37500

[Bug middle-end/37500] [4.4 Regression] libstdc++ failed to compile at -O0

[hubicka at gcc dot gnu dot org]

------- Comment #7 from hubicka at gcc dot gnu dot org  2008-09-13 08:01 -------
Fixed by my patch.


-- 

hubicka at gcc dot gnu dot org changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |RESOLVED
         Resolution|                            |FIXED


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=37500

[Bug middle-end/37500] [4.4 Regression] libstdc++ failed to compile at -O0

[pinskia at gcc dot gnu dot org]

------- Comment #8 from pinskia at gcc dot gnu dot org  2008-09-14 01:17 -------
*** Bug 37511 has been marked as a duplicate of this bug. ***


-- 

pinskia at gcc dot gnu dot org changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |dcb314 at hotmail dot com


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=37500