[Bug c/28198] New: ICE building mips-elf cross compiler

[Bug c/28198] New: ICE building mips-elf cross compiler

[fnf at specifixinc dot com]

The current "top-of-tree" i686 native compiler gets an internal error building
a mips-elf toolchain, while compiling tree.c.  The native compiler identifies
itself as:

  $ gcc -v
  Using built-in specs.
  Target: i686-pc-linux-gnu
  Configured with: /src/latest/trunk/src/gcc/configure -v  
--prefix=/opt/local/latest/trunk --enable-languages=c,c++ --disable-werror  
--cache-file=.././config.cache --srcdir=/src/latest/trunk/src/gcc
  Thread model: posix
  gcc version 4.2.0 20060628 (experimental)

It can be reproduced with the command:

  $ ./cc1 -quiet -g -O2 -W -Wwrite-strings bug.i
  tree.c:7615: internal compiler error: Segmentation fault

I will attempt to attach the preprocessed version of tree.c (bug.i) referenced
above.


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           Summary: ICE building mips-elf cross compiler
           Product: gcc
           Version: 4.2.0
            Status: UNCONFIRMED
          Severity: critical
          Priority: P3
         Component: c
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: fnf at specifixinc dot com
 GCC build triplet: i686-pc-linux-gnu
  GCC host triplet: i686-pc-linux-gnu
GCC target triplet: i686-pc-linux-gnu


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=28198

[Bug c/28198] ICE building mips-elf cross compiler

[fnf at specifixinc dot com]

------- Comment #1 from fnf at specifixinc dot com  2006-06-29 11:05 -------
Created an attachment (id=11779)
 --> (http://gcc.gnu.org/bugzilla/attachment.cgi?id=11779&action=view)
Preprocessed version of tree.c

I had to wack away some code to get it to fit within the apparent 1Mb limit for
attachments.


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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=28198

[Bug c/28198] ICE building mips-elf cross compiler

[pinskia at gcc dot gnu dot org]

------- Comment #2 from pinskia at gcc dot gnu dot org  2006-06-29 13:09 -------
It works with a cross to x86-linux-gnu with "4.2.0 20060617".


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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=28198

[Bug c/28198] ICE building mips-elf cross compiler

[pinskia at gcc dot gnu dot org]

------- Comment #3 from pinskia at gcc dot gnu dot org  2006-06-29 13:20 -------
It works on x86_64 with "./cc1 pr28198.i -m32 -g -O2 -W -Wwrite-strings" on the
stage1 cc1 so maybe something is miscompiling cc1 or there is a GC issue.


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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=28198

[Bug c/28198] ICE building mips-elf cross compiler

[pinskia at gcc dot gnu dot org]

------- Comment #4 from pinskia at gcc dot gnu dot org  2006-06-29 13:24 -------
(In reply to comment #3)
Or a HWI == 32bit problem because x86_64 is 64bit so is powerpc-* which I tried
also.


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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=28198

[Bug middle-end/28198] [4.2 Regression] ICE building mips-elf cross compiler

[pinskia at gcc dot gnu dot org]

------- Comment #5 from pinskia at gcc dot gnu dot org  2006-06-29 14:10 -------
Can you give a backtrace?
Because I am getting a bootstrap failure on x86_64 which looks like it could be
the same.
The backtrace I have for the x86_64 bootstrap failure is:
#0  0x00000000009d8203 in copy_node_stat (node=0x2aaaac1c8fc0) at
/home/pinskia/src/newtest/trunk/gcc/tree.c:617
#1  0x0000000000a1a4d7 in copy_constant (exp=0x2aaaac1c8fc0) at
/home/pinskia/src/newtest/trunk/gcc/varasm.c:2709

And length is incorrect now after Richard G.'s patch for make_string changes.


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pinskia at gcc dot gnu dot org changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |pinskia at gcc dot gnu dot
                   |                            |org
          Component|c                           |middle-end
           Keywords|                            |ice-on-valid-code
            Summary|ICE building mips-elf cross |[4.2 Regression] ICE
                   |compiler                    |building mips-elf cross
                   |                            |compiler
   Target Milestone|---                         |4.2.0


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=28198

[Bug middle-end/28198] [4.2 Regression] ICE building mips-elf cross compiler

[pinskia at gcc dot gnu dot org]

------- Comment #6 from pinskia at gcc dot gnu dot org  2006-06-29 17:55 -------
Can you build a x86 compiler after revision 115072 and try again, I fixed the
issue mentioned in comment #5.


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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=28198

[Bug middle-end/28198] [4.2 Regression] ICE building mips-elf cross compiler

[fnf at specifix dot com]

------- Comment #7 from fnf at specifix dot com  2006-06-30 10:52 -------
Subject: Re:  [4.2 Regression] ICE building mips-elf cross compiler

On Thursday 29 June 2006 13:55, pinskia at gcc dot gnu dot org wrote:
> Can you build a x86 compiler after revision 115072 and try again, I fixed the
> issue mentioned in comment #5.

I updated my sources last night and tried building a native x86
compiler this morning.  I'm getting an internal error still, though
this one looks different.

I wonder if this is due to problems with precompiled headers and Fedora Core
4's
exec shield.  I'll try disabling the exec shield and see if the problem goes
away.

/build/latest/trunk/i686-pc-linux-gnu/gcc/./gcc/xgcc -shared-libgcc
-B/build/latest/trunk/i686-pc-linux-gnu/gcc/./gcc -nostdinc++
-L/build/latest/trunk/i686-\pc-linux-gnu/gcc/i686-pc-linux-gnu/libstdc++-v3/src
-L/build/latest/trunk/i686-pc-linux-gnu/gcc/i686-pc-linux-gnu/libstdc++-v3/src/.libs
-B/opt/local/latest/\trunk/i686-pc-linux-gnu/bin/
-B/opt/local/latest/trunk/i686-pc-linux-gnu/lib/ -isystem
/opt/local/latest/trunk/i686-pc-linux-gnu/include -isystem
/opt/local/\latest/trunk/i686-pc-linux-gnu/sys-include -Winvalid-pch
-Wno-deprecated -x c++-header -g -O2  -D_GNU_SOURCE
-I/build/latest/trunk/i686-pc-linux-gnu/gcc/i686\-pc-linux-gnu/libstdc++-v3/include/i686-pc-linux-gnu
-I/build/latest/trunk/i686-pc-linux-gnu/gcc/i686-pc-linux-gnu/libstdc++-v3/include
-I/src/latest/trunk/s\rc/gcc/libstdc++-v3/libsupc++
/src/latest/trunk/src/gcc/libstdc++-v3/include/precompiled/extc++.h -O2 -g -o
./i686-pc-linux-gnu/bits/extc++.h.gch/O2g.gch;
/build/latest/trunk/i686-pc-linux-gnu/gcc/i686-pc-linux-gnu/libstdc++-v3/include/ext/pb_ds/detail/binary_heap_/binary_heap_.hpp:235:
internal compiler error:\ tree check: expected integer_cst, have scope_ref in
tree_int_cst_sgn, at tree.c:4484


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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=28198

[Bug middle-end/28198] [4.2 Regression] ICE building mips-elf cross compiler

[pinskia at gcc dot gnu dot org]

------- Comment #8 from pinskia at gcc dot gnu dot org  2006-06-30 11:18 -------
(In reply to comment #7)
>> I updated my sources last night and tried building a native x86
> compiler this morning.  I'm getting an internal error still, though
> this one looks different.
> internal compiler error:\ tree check: expected integer_cst, have scope_ref in
> tree_int_cst_sgn, at tree.c:4484

Yes that is a different one.  You would like to file that ICE seperately as the
orginal bug is fixed.


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pinskia at gcc dot gnu dot org changed:

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


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=28198