[Bug bootstrap/40431] New: ICE in div_data_align, at dwarf2out.c:533 while configuring sparcv9 libgcc

["ro at gcc dot gnu dot org" <gcc-bugzilla at gcc dot gnu dot org>]

Between 20090522 (rev 147798) and 20090612 (rev 148427), Solaris 11/SPARC
bootstrap broke configuring the stage1 sparcv9 libgcc: in config.log, I find

configure:2590: checking for suffix of object files
configure:2611: /vol/gccsrc/obj/gcc-4.5.0-20090612/11-gcc/./gcc/xgcc
-B/vol/gccsrc/obj/gcc-4.5.0-20090612/11-gcc/./gcc/
-B/vol/gcc/sparc-sun-solaris2.11/bin/ -B/vol/gcc/sparc-sun-solaris2.11/lib/
-isystem /vol/gcc/sparc-sun-solaris2.11/include -isystem
/vol/gcc/sparc-sun-solaris2.11/sys-include  -m64 -c -g -O2  conftest.c >&5
conftest.c:16:1: internal compiler error: in div_data_align, at dwarf2out.c:533

This can be reproduced with this conftest.c:

int
main ()
{

  ;
  return 0;
}

ro@galeras 49 > ./cc1 conftest.i -mptr64 -mstack-bias -mno-v8plus -mcpu=v9 -m64
-g
 main
Analyzing compilation unit
Performing interprocedural optimizations
 <visibility> <early_local_cleanups> <summary generate> <inline>Assembling
functions:
 main
conftest.c:7:1: internal compiler error: in div_data_align, at dwarf2out.c:533
Please submit a full bug report,
with preprocessed source if appropriate.
See <http://gcc.gnu.org/bugs.html> for instructions.

Running cc1 under gdb, I find

Breakpoint 1, fancy_abort (file=0xe07518
"/vol/gcc/src/gcc-dist/gcc/dwarf2out.c", line=533, function=0xe07b60
"div_data_align") at /vol/gcc/src/gcc-dist/gcc/diagnostic.c:730
(gdb) where
#0  fancy_abort (file=0xe07518 "/vol/gcc/src/gcc-dist/gcc/dwarf2out.c",
line=533, function=0xe07b60 "div_data_align") at
/vol/gcc/src/gcc-dist/gcc/diagnostic.c:730
#1  0x0034cedc in div_data_align (off=2047) at
/vol/gcc/src/gcc-dist/gcc/dwarf2out.c:533
#2  0x0034cb2c in output_cfi (cfi=0xff012360, fde=0x0, for_eh=0) at
/vol/gcc/src/gcc-dist/gcc/dwarf2out.c:3044
#3  0x0034df58 in output_call_frame_info (for_eh=0) at
/vol/gcc/src/gcc-dist/gcc/dwarf2out.c:3397
#4  0x0034f618 in dwarf2out_frame_finish () at
/vol/gcc/src/gcc-dist/gcc/dwarf2out.c:3740
#5  0x007d5e48 in compile_file () at /vol/gcc/src/gcc-dist/gcc/toplev.c:1071
#6  0x007d9278 in do_compile () at /vol/gcc/src/gcc-dist/gcc/toplev.c:2353
#7  0x007d939c in toplev_main (argc=8, argv=0xffbff634) at
/vol/gcc/src/gcc-dist/gcc/toplev.c:2398
#8  0x0021a63c in main (argc=8, argv=0xffbff634) at
/vol/gcc/src/gcc-dist/gcc/main.c:35
(gdb) up
#1  0x0034cedc in div_data_align (off=2047) at
/vol/gcc/src/gcc-dist/gcc/dwarf2out.c:533
(gdb) p r
$2 = -255
(gdb) p off
$3 = 2047

I suppose one of rth's recent DWARF patches is the culprit.

On the other hand, i386-pc-solaris2.10 is unaffected.


-- 
           Summary: ICE in div_data_align, at dwarf2out.c:533 while
                    configuring sparcv9 libgcc
           Product: gcc
           Version: 4.5.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: bootstrap
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: ro at gcc dot gnu dot org
 GCC build triplet: sparc-sun-solaris2.11
  GCC host triplet: sparc-sun-solaris2.11
GCC target triplet: sparc-sun-solaris2.11


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=40431