This is the mail archive of the
gcc-bugs@gcc.gnu.org
mailing list for the GCC project.
[Bug libfortran/32702] crash when printing big character variable
- From: "dfranke at gcc dot gnu dot org" <gcc-bugzilla at gcc dot gnu dot org>
- To: gcc-bugs at gcc dot gnu dot org
- Date: 9 Jul 2007 15:08:46 -0000
- Subject: [Bug libfortran/32702] crash when printing big character variable
- References: <bug-32702-9647@http.gcc.gnu.org/bugzilla/>
- Reply-to: gcc-bugzilla at gcc dot gnu dot org
------- Comment #1 from dfranke at gcc dot gnu dot org 2007-07-09 15:08 -------
Confirmed. Presumely a buffer overflow in the library.
If len==8192, valgrind does not report any errors.
If len > 8192:
===30988== Invalid write of size 1
==30988== at 0x4022D8E: memcpy (mc_replace_strmem.c:406)
==30988== by 0x40A26C3: write_character (write.c:1412)
==30988== by 0x40A462B: _gfortrani_list_formatted_write (write.c:1533)
==30988== by 0x409A885: _gfortran_transfer_character (transfer.c:1416)
==30988== by 0x80486FB: MAIN__ (pr32702.f90:4)
==30988== by 0x8048748: main (fmain.c:22)
==30988== Address 0x4229340 is 0 bytes after a block of size 8,296 alloc'd
==30988== at 0x40213D0: malloc (vg_replace_malloc.c:149)
==30988== by 0x40342CC: _gfortrani_get_mem (memory.c:53)
==30988== by 0x40A0BE4: fd_to_stream (unix.c:1048)
==30988== by 0x409F509: _gfortrani_init_units (unit.c:525)
==30988== by 0x4033F73: init (main.c:152)
==30988== by 0x40307DC: (within
/h/franke/packages/i686-pc-linux-gnu/gcc/lib/gcc/i686-pc-linux-gnu/4.3.0/libgfortran.so.3.0.0)
==30988== by 0x400D762: call_init (in /lib/ld-2.4.so)
==30988== by 0x400D872: _dl_init (in /lib/ld-2.4.so)
==30988== by 0x400087E: (within /lib/ld-2.4.so)
Moving to libfortran, adding Jerry to CC.
--
dfranke at gcc dot gnu dot org changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |dfranke at gcc dot gnu dot
| |org, jvdelisle at gcc dot
| |gnu dot org
Component|fortran |libfortran
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=32702