Package: libc6 Version: 2.3.5-8 Severity: important When I attempt to use strfry() as documented, it segfaults. Please see the following attachments: * my C source code * my compiled ELF executable * a transcript of my GDB session -- System Information: Debian Release: testing/unstable APT prefers unstable APT policy: (500, 'unstable'), (500, 'stable') Architecture: powerpc (ppc) Shell: /bin/sh linked to /bin/bash Kernel: Linux 2.6.9-powerpc-smp Locale: LANG=C, LC_CTYPE=en_US.UTF-8 (charmap=UTF-8) -- no debconf information
/* cc -Wall -Werror -std=c99 */
#define _GNU_SOURCE /* strfry() */
#include <stdio.h> /* printf() */
#include <stdlib.h> /* malloc() */
#include <string.h> /* strfry(), strncpy() */
int main(int argc, char **argv) {
char *string;
string = malloc(sizeof(char) * 8);
(void) strncpy(string, "bletch", sizeof(char) * 8);
(void) printf("%s\n", string);
(void) strncpy(string, "greunk", sizeof(char) * 8);
(void) strfry(string);
(void) printf("%s\n", string);
free(string);
return 0;
}
/* vim:set cindent et sts=4 sw=4 tw=80: */
Attachment:
strfry
Description: application/executable
$ gdb ./strfry ./core
GNU gdb 6.3.90_20051119-debian
Copyright 2004 Free Software Foundation, Inc.
GDB is free software, covered by the GNU General Public License, and you are
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This GDB was configured as "powerpc-linux-gnu"...Using host libthread_db library "/lib/tls/libthread_db.so.1".
Core was generated by `./strfry'.
Program terminated with signal 11, Segmentation fault.
Reading symbols from /usr/lib/debug/libc.so.6...done.
Loaded symbols for /usr/lib/debug/libc.so.6
Reading symbols from /lib/ld.so.1...Reading symbols from /usr/lib/debug/lib/ld-2.3.5.so...done.
done.
Loaded symbols for /lib/ld.so.1
#0 __initstate_r (seed=1133653892, arg_state=0xffee50c "", n=32, buf=0xffee4f0) at random_r.c:252
252 random_r.c: No such file or directory.
in random_r.c
(gdb) bt full
#0 __initstate_r (seed=1133653892, arg_state=0xffee50c "", n=32, buf=0xffee4f0) at random_r.c:252
type = 1133648766
degree = 33618226
separation = 4146
state = (int32_t *) 0xffee4f0
old_type = 0
old_state = (int32_t *) 0x0
#1 0x0ff3a8e8 in strfry (string=0x100008a4 "bletch") at strfry.c:35
state = '\0' <repeats 31 times>
init = 0
rdata = {fptr = 0x0, rptr = 0x0, state = 0x0, rand_type = 0, rand_deg = 0, rand_sep = 0, end_ptr = 0x0}
i = 268362992
#2 0x100004c8 in main (argc=1, argv=0x7ffff3d4) at strfry.c:14
string = 0x100008a4 "bletch"
(gdb) quit