I am getting a core dump with a program compiled with gcc-4.1.2 (64bit). The
program crashed inside the function call pam_authenticate.
The program uses the pam library and is compiled by the following command:
gcc-4.1.2/bin/gcc -mlp64 pam_test.c -lpam -o pt
-bash-3.00$ ldd pt
libpam.so.1 => /lib/hpux64/libpam.so.1
libunwind.so.1 => /lib/hpux64/libunwind.so.1
libc.so.1 => /lib/hpux64/libc.so.1
libuca.so.1 => /usr/lib/hpux64/libuca.so.1
libdl.so.1 => /usr/lib/hpux64/libdl.so.1
If compiled with 32bit, the program works fine.
gcc-4.1.2/bin/gcc pam_test.c -lpam -o pt
-bash-3.00$ ldd pt
libpam.so.1 => /usr/lib/hpux32/libpam.so.1
libunwind.so.1 => /usr/lib/hpux32/libunwind.so.1
libc.so.1 => /usr/lib/hpux32/libc.so.1
libuca.so.1 => /usr/lib/hpux32/libuca.so.1
libdl.so.1 => /usr/lib/hpux32/libdl.so.1
When compiled using gcc-3.4, it works fine on both 64 and 32 bit.
-bash-3.00$ gcc-3.4/bin/gcc -mlp64 pam_test.c -lpam -o pt
-bash-3.00$ ldd pt
libpam.so.1 => /lib/hpux64/libpam.so.1
libc.so.1 => /lib/hpux64/libc.so.1
libdl.so.1 => /usr/lib/hpux64/libdl.so.1
We built gcc-4.1.2 from the source with the following configuration and with
binutil-2.17.
Configured with: /home/gcc-4.1.2/configure --prefix=/usr/local/gcc-4.1.2
--enable-languages=c,c++ --enable-threads=posix --with-gnu-as --without-gnu-ld
--with-as=/usr/local/gcc-4.1.2/bin/as
Is this likely a gcc bug?
---------------------------------------------------------
#include <pwd.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include <sys/types.h>
#include <security/pam_appl.h>
const char *PAM_username = "guest";
const char *PAM_password = "guest";
static int PAM_conv (int num_msg, struct pam_message **msg,
struct pam_response **resp, void *appdata_ptr)
{
struct pam_response *repl = NULL;
int count = 0, replies = 0;
int size = sizeof(struct pam_response);
printf("In PAM_conv:num_msg:%i\n",num_msg);
for(count = 0; count < num_msg; count++) {
switch(msg[0]->msg_style) {
case PAM_PROMPT_ECHO_ON:
printf("PAM_conv:PAM_PROMPT_ECHO_ON\n");
if (!(repl = (struct pam_response*)realloc(repl,
size))) {
return PAM_CONV_ERR;
}
size += sizeof(struct pam_response);
repl[replies].resp_retcode = PAM_SUCCESS;
repl[replies].resp = strdup(PAM_username);
replies++;
break;
case PAM_PROMPT_ECHO_OFF:
printf("PAM_conv:PAM_PROMPT_ECHO_OFF\n");
if (!(repl = (struct pam_response*)realloc(repl,
size))) {
return PAM_CONV_ERR;
}
size += sizeof(struct pam_response);
repl[replies].resp_retcode = PAM_SUCCESS;
repl[replies].resp = strdup(PAM_password);
break;
default:
break;
}
}
if (repl) {
*resp = repl;
}
return PAM_SUCCESS;
}
int main()
{
static struct pam_conv conv = {
&PAM_conv,
NULL
};
pam_handle_t *pamh = NULL;
int retval;
retval = pam_start("su", PAM_username, &conv, &pamh);
if (retval != PAM_SUCCESS)
printf("pam_start() failed.\n");
printf("authenticate--- do not crash\n");
retval = pam_authenticate(pamh, 0);
printf("authenticate-- \n");
if (retval != PAM_SUCCESS) {
printf("PAM authentication failed.\n");
} else {
printf("PAM authentication OK.\n");
}
pam_end(pamh, PAM_SUCCESS);
return 1;
}
--
Summary: Core dump on HPUX
Product: gcc
Version: 4.1.2
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c
AssignedTo: unassigned at gcc dot gnu dot org
ReportedBy: zhou_dx at yahoo dot com
GCC target triplet: ia64-hp-hpux11.23
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=33548
