[Bug pch/12610] New: ICE after creating PCH the second time

[pinskia at gcc dot gnu dot org]

PLEASE REPLY TO gcc-bugzilla@gcc.gnu.org ONLY, *NOT* gcc-bugs@gcc.gnu.org.

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=12610

           Summary: ICE after creating PCH the second time
           Product: gcc
           Version: 3.4
            Status: UNCONFIRMED
          Keywords: ice-on-valid-code
          Severity: normal
          Priority: P2
         Component: pch
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: pinskia at gcc dot gnu dot org
                CC: gcc-bugs at gcc dot gnu dot org

Create an empty file called pch.h
run the following:
gcc pch.h
gcc pch.h

GCC will produce a seg fault:
0x0004f9a4 in _cpp_create_definition (pfile=0x41003800, node=0x46e1cc) at /Volumes/
UFS_Partition/pinskia/src/fsf/gcc-clean/src/gcc/cppmacro.c:1491
1491      macro->syshdr = pfile->map->sysp != 0;
(gdb) bt
#0  0x0004f9a4 in _cpp_create_definition (pfile=0x41003800, node=0x46e1cc) at /Volumes/
UFS_Partition/pinskia/src/fsf/gcc-clean/src/gcc/cppmacro.c:1491
#1  0x0005c7b4 in cpp_read_state (r=0x41003800, name=0x40c01850 "pch.h", f=0xa0009870, 
data=0x40c01a10) at /Volumes/UFS_Partition/pinskia/src/fsf/gcc-clean/src/gcc/cpppch.c:693
#2  0x0005c7b4 in cpp_read_state (r=0x41003800, name=0x40c01850 "pch.h", f=0xa0009870, 
data=0x40c01a10) at /Volumes/UFS_Partition/pinskia/src/fsf/gcc-clean/src/gcc/cpppch.c:693
#3  0x0004aa44 in c_common_read_pch (pfile=0x41003800, name=0xa0009870 "A\001v?", fd=1, 
orig_name=0x1 <Address 0x1 out of bounds>) at /Volumes/UFS_Partition/pinskia/src/fsf/gcc-
clean/src/gcc/c-pch.c:270
#4  0x00059ad0 in _cpp_stack_file (pfile=0x0, file=0x410057bc, import=true) at /Volumes/
UFS_Partition/pinskia/src/fsf/gcc-clean/src/gcc/cppfiles.c:560
#5  0x00058450 in cpp_push_main_file (pfile=0x41003800) at /Volumes/UFS_Partition/pinskia/
src/fsf/gcc-clean/src/gcc/cppinit.c:490
#6  0x0003fc34 in c_common_parse_file (set_yydebug=1090541500) at /Volumes/UFS_Partition/
pinskia/src/fsf/gcc-clean/src/gcc/c-opts.c:1223
#7  0x0009d628 in toplev_main (argc=1078457488, argv=0x1) at /Volumes/UFS_Partition/
pinskia/src/fsf/gcc-clean/src/gcc/toplev.c:1815
#8  0x00002124 in _start (argc=15, argv=0xbffffba0, envp=0xbffffbe0) at /SourceCache/Csu/
Csu-46/crt.c:267
#9  0x00001f98 in start ()
(gdb)