[Bug fortran/56581] Segfault when reading source file which starts with a byte-order mark (-cpp works)

[walt.brainerd at gmail dot com]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=56581

--- Comment #9 from Walt Brainerd <walt.brainerd at gmail dot com> 2013-03-13 16:12:35 UTC ---
Thanks for sending me this.

Maybe I did after all provide something that will help you.

On Tue, Mar 12, 2013 at 3:05 PM, tkoenig at gcc dot gnu.org <
gcc-bugzilla@gcc.gnu.org> wrote:

>
> http://gcc.gnu.org/bugzilla/show_bug.cgi?id=56581
>
> Thomas Koenig <tkoenig at gcc dot gnu.org> changed:
>
>            What    |Removed                     |Added
>
> ----------------------------------------------------------------------------
>            Keywords|                            |ice-on-invalid-code,
>                    |                            |rejects-valid
>              Status|UNCONFIRMED                 |NEW
>    Last reconfirmed|2013-03-10 00:00:00         |2013-03-12
>      Ever Confirmed|0                           |1
>
> --- Comment #8 from Thomas Koenig <tkoenig at gcc dot gnu.org> 2013-03-12
> 22:05:12 UTC ---
> We try to support this, but apparently it doesn't work
> (see line 2015 and following of scanner.c).
>
> Same thing happens for 4.6 and 4.7.
>
> Valgrind tells me
>
> ==11226== Memcheck, a memory error detector
> ==11226== Copyright (C) 2002-2011, and GNU GPL'd, by Julian Seward et al.
> ==11226== Using Valgrind-3.7.0 and LibVEX; rerun with -h for copyright info
> ==11226== Command: /home/ig25/lib/gcc/x86_64-unknown-linux-gnu/4.8.0/f951
> ice.f
> ==11226==
> ==11226== Invalid write of size 4
> ==11226==    at 0x580400: load_line(_IO_FILE*, unsigned int**, int*, int
> const*) (scanner.c:1646)
> ==11226==    by 0x5811C3: load_file(char const*, char const*, bool)
> (scanner.c:2009)
> ==11226==    by 0x582F82: gfc_new_file() (scanner.c:2120)
> ==11226==    by 0x5A1DA7: gfc_init() (f95-lang.c:224)
> ==11226==    by 0x94F286: toplev_main(int, char**) (toplev.c:1700)
> ==11226==    by 0x5A38454: (below main) (in /lib64/libc-2.15.so)
> ==11226==  Address 0x5ea3e30 is 0 bytes after a block of size 288 alloc'd
> ==11226==    at 0x4C292B8: calloc (in
> /usr/lib64/valgrind/vgpreload_memcheck-amd64-linux.so)
> ==11226==    by 0xE54110: xcalloc (xmalloc.c:162)
> ==11226==    by 0x58155E: load_file(char const*, char const*, bool)
> (scanner.c:2030)
> ==11226==    by 0x582F82: gfc_new_file() (scanner.c:2120)
> ==11226==    by 0x5A1DA7: gfc_init() (f95-lang.c:224)
> ==11226==    by 0x94F286: toplev_main(int, char**) (toplev.c:1700)
> ==11226==    by 0x5A38454: (below main) (in /lib64/libc-2.15.so)
>
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