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* [Bug fortran/32702] New: crash when printing big character variable
@ 2007-07-09 14:52 vivekrao4 at yahoo dot com
2007-07-09 15:08 ` [Bug libfortran/32702] " dfranke at gcc dot gnu dot org
` (5 more replies)
0 siblings, 6 replies; 7+ messages in thread
From: vivekrao4 at yahoo dot com @ 2007-07-09 14:52 UTC (permalink / raw)
To: gcc-bugs
For the code
program main
character (len=10000) :: word
word = "dog"
print*,"word =",word
end program main
compiled with
U:\vrao\fortran>gfortran -v xbug.f90
Driving: gfortran -v xbug.f90 -lgfortranbegin -lgfortran
Using built-in specs.
Target: i386-pc-mingw32
Configured with: ../trunk/configure --prefix=/mingw
--enable-languages=c,fortran --with-gmp=/home/coudert/local --disable-nls
--with-ld=/mingw/bin/ld --with-as=/mingw/bin/as --disable-werror
--enable-bootstrap --enable-threads --build=i386-pc-mingw32 --disable-shared
--enable-libgomp
Thread model: win32
gcc version 4.3.0 20070706 (experimental)
c:/programs/gfortran/bin/../libexec/gcc/i386-pc-mingw32/4.3.0/f951.exe
xbug.f90 -quiet -dumpbase xbug.f90 -mtune=i386 -auxbase xbug -version
-fintrinsic-modules-path
c:/programs/gfortran/bin/../lib/gcc/i386-pc-mingw32/4.3.0/finclude -o
C:\DOCUME~1\vrao\LOCALS~1\Temp/ccfHwMra.s
GNU F95 version 4.3.0 20070706 (experimental) (i386-pc-mingw32)
compiled by GNU C version 4.3.0 20070706 (experimental), GMP version
4.2.1, MPFR version 2.2.1.
GGC heuristics: --param ggc-min-expand=30 --param ggc-min-heapsize=4096
as -o C:\DOCUME~1\vrao\LOCALS~1\Temp/cc1pIAXq.o
C:\DOCUME~1\vrao\LOCALS~1\Temp/ccfHwMra.s
c:/programs/gfortran/bin/../libexec/gcc/i386-pc-mingw32/4.3.0/collect2.exe
-Bdynamic c:/programs/g95/lib/crt2.o
c:/programs/gfortran/bin/../lib/gcc/i386-pc-mingw32/4.3.0/crtbegin.o
-Lc:/programs/gfortran/bin/../lib/gcc/i386-pc-mingw32/4.3.0
-Lc:/programs/gfortran/bin/../lib/gcc -Lc:/programs/g95/lib
-Lc:/programs/gfortran/bin/../lib/gcc/i386-pc-mingw32/4.3.0/../../..
C:\DOCUME~1\vrao\LOCALS~1\Temp/cc1pIAXq.o -lgfortranbegin -lgfortran -lmingw32
-lgcc -lmoldname -lmingwex -lmsvcrt -luser32 -lkernel32 -ladvapi32 -lshell32
-lmingw32 -lgcc -lmoldname -lmingwex -lmsvcrt
c:/programs/gfortran/bin/../lib/gcc/i386-pc-mingw32/4.3.0/crtend.o
the program on Windows XP prints "word =dog" but then crashes with a pop-up
message
"a.exe has encountered a problem and needs to close".
The program runs fine with the LEN is reduced to 8000.
--
Summary: crash when printing big character variable
Product: gcc
Version: 4.3.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: fortran
AssignedTo: unassigned at gcc dot gnu dot org
ReportedBy: vivekrao4 at yahoo dot com
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=32702
^ permalink raw reply [flat|nested] 7+ messages in thread
* [Bug libfortran/32702] crash when printing big character variable
2007-07-09 14:52 [Bug fortran/32702] New: crash when printing big character variable vivekrao4 at yahoo dot com
@ 2007-07-09 15:08 ` dfranke at gcc dot gnu dot org
2007-07-09 15:10 ` dfranke at gcc dot gnu dot org
` (4 subsequent siblings)
5 siblings, 0 replies; 7+ messages in thread
From: dfranke at gcc dot gnu dot org @ 2007-07-09 15:08 UTC (permalink / raw)
To: gcc-bugs
------- 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
^ permalink raw reply [flat|nested] 7+ messages in thread
* [Bug libfortran/32702] crash when printing big character variable
2007-07-09 14:52 [Bug fortran/32702] New: crash when printing big character variable vivekrao4 at yahoo dot com
2007-07-09 15:08 ` [Bug libfortran/32702] " dfranke at gcc dot gnu dot org
@ 2007-07-09 15:10 ` dfranke at gcc dot gnu dot org
2007-07-09 18:48 ` [Bug libfortran/32702] [4.3 Regression] " burnus at gcc dot gnu dot org
` (3 subsequent siblings)
5 siblings, 0 replies; 7+ messages in thread
From: dfranke at gcc dot gnu dot org @ 2007-07-09 15:10 UTC (permalink / raw)
To: gcc-bugs
--
dfranke at gcc dot gnu dot org changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |NEW
Ever Confirmed|0 |1
Last reconfirmed|0000-00-00 00:00:00 |2007-07-09 15:10:11
date| |
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=32702
^ permalink raw reply [flat|nested] 7+ messages in thread
* [Bug libfortran/32702] [4.3 Regression] crash when printing big character variable
2007-07-09 14:52 [Bug fortran/32702] New: crash when printing big character variable vivekrao4 at yahoo dot com
2007-07-09 15:08 ` [Bug libfortran/32702] " dfranke at gcc dot gnu dot org
2007-07-09 15:10 ` dfranke at gcc dot gnu dot org
@ 2007-07-09 18:48 ` burnus at gcc dot gnu dot org
2007-07-10 0:40 ` jvdelisle at gcc dot gnu dot org
` (2 subsequent siblings)
5 siblings, 0 replies; 7+ messages in thread
From: burnus at gcc dot gnu dot org @ 2007-07-09 18:48 UTC (permalink / raw)
To: gcc-bugs
--
burnus at gcc dot gnu dot org changed:
What |Removed |Added
----------------------------------------------------------------------------
Keywords| |wrong-code
Known to fail| |4.3.0
Known to work| |4.2.1
Summary|crash when printing big |[4.3 Regression] crash when
|character variable |printing big character
| |variable
Target Milestone|--- |4.3.0
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=32702
^ permalink raw reply [flat|nested] 7+ messages in thread
* [Bug libfortran/32702] [4.3 Regression] crash when printing big character variable
2007-07-09 14:52 [Bug fortran/32702] New: crash when printing big character variable vivekrao4 at yahoo dot com
` (2 preceding siblings ...)
2007-07-09 18:48 ` [Bug libfortran/32702] [4.3 Regression] " burnus at gcc dot gnu dot org
@ 2007-07-10 0:40 ` jvdelisle at gcc dot gnu dot org
2007-07-10 5:37 ` jvdelisle at gcc dot gnu dot org
2007-07-10 5:59 ` jvdelisle at gcc dot gnu dot org
5 siblings, 0 replies; 7+ messages in thread
From: jvdelisle at gcc dot gnu dot org @ 2007-07-10 0:40 UTC (permalink / raw)
To: gcc-bugs
------- Comment #2 from jvdelisle at gcc dot gnu dot org 2007-07-10 00:39 -------
Got it.
--
jvdelisle at gcc dot gnu dot org changed:
What |Removed |Added
----------------------------------------------------------------------------
AssignedTo|unassigned at gcc dot gnu |jvdelisle at gcc dot gnu dot
|dot org |org
Status|NEW |ASSIGNED
Last reconfirmed|2007-07-09 15:10:11 |2007-07-10 00:39:56
date| |
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=32702
^ permalink raw reply [flat|nested] 7+ messages in thread
* [Bug libfortran/32702] [4.3 Regression] crash when printing big character variable
2007-07-09 14:52 [Bug fortran/32702] New: crash when printing big character variable vivekrao4 at yahoo dot com
` (3 preceding siblings ...)
2007-07-10 0:40 ` jvdelisle at gcc dot gnu dot org
@ 2007-07-10 5:37 ` jvdelisle at gcc dot gnu dot org
2007-07-10 5:59 ` jvdelisle at gcc dot gnu dot org
5 siblings, 0 replies; 7+ messages in thread
From: jvdelisle at gcc dot gnu dot org @ 2007-07-10 5:37 UTC (permalink / raw)
To: gcc-bugs
------- Comment #3 from jvdelisle at gcc dot gnu dot org 2007-07-10 05:37 -------
Subject: Bug 32702
Author: jvdelisle
Date: Tue Jul 10 05:37:29 2007
New Revision: 126510
URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=126510
Log:
2007-07-09 Jerry DeLisle <jvdelisle@gcc.gnu.org>
PR libgfortran/32702
* io/unix.c (unix_stream): Restore buffer pointer and small_buffer.
(fd_alloc): If the number of bytes needed is greater than the default
BUFFER_SIZE, allocate a new buffer large enough. Free the old buffer
if
necessary. (fd_sfree): Restore use of buffer pointer.
(fd_close): Likewise. (fd_open): Likewise.
(init_error_stream): Likewise.
Modified:
trunk/libgfortran/ChangeLog
trunk/libgfortran/io/unix.c
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=32702
^ permalink raw reply [flat|nested] 7+ messages in thread
* [Bug libfortran/32702] [4.3 Regression] crash when printing big character variable
2007-07-09 14:52 [Bug fortran/32702] New: crash when printing big character variable vivekrao4 at yahoo dot com
` (4 preceding siblings ...)
2007-07-10 5:37 ` jvdelisle at gcc dot gnu dot org
@ 2007-07-10 5:59 ` jvdelisle at gcc dot gnu dot org
5 siblings, 0 replies; 7+ messages in thread
From: jvdelisle at gcc dot gnu dot org @ 2007-07-10 5:59 UTC (permalink / raw)
To: gcc-bugs
------- Comment #4 from jvdelisle at gcc dot gnu dot org 2007-07-10 05:59 -------
Closing
--
jvdelisle at gcc dot gnu dot org changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|ASSIGNED |RESOLVED
Resolution| |FIXED
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=32702
^ permalink raw reply [flat|nested] 7+ messages in thread
end of thread, other threads:[~2007-07-10 5:59 UTC | newest]
Thread overview: 7+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2007-07-09 14:52 [Bug fortran/32702] New: crash when printing big character variable vivekrao4 at yahoo dot com
2007-07-09 15:08 ` [Bug libfortran/32702] " dfranke at gcc dot gnu dot org
2007-07-09 15:10 ` dfranke at gcc dot gnu dot org
2007-07-09 18:48 ` [Bug libfortran/32702] [4.3 Regression] " burnus at gcc dot gnu dot org
2007-07-10 0:40 ` jvdelisle at gcc dot gnu dot org
2007-07-10 5:37 ` jvdelisle at gcc dot gnu dot org
2007-07-10 5:59 ` jvdelisle at gcc dot gnu dot org
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