[Bug gdb/11839] gdb does not detect calls to dlmopen

["gbenson at redhat dot com" <sourceware-bugzilla@sourceware.org>]

http://sourceware.org/bugzilla/show_bug.cgi?id=11839

Gary Benson <gbenson at redhat dot com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |gbenson at redhat dot com

--- Comment #1 from Gary Benson <gbenson at redhat dot com> 2011-05-17 13:18:21 UTC ---
Confirmed (building on the testcase of bug 2328):

$ cat my_lib.c
#include <stdio.h>

int
sub1(int x)
{
        printf("sub1 %d\n", x);
}
$ cat my_main_dlmopen.c
#define _GNU_SOURCE
#include <dlfcn.h>

int
main()
{
    void *handle = dlmopen(LM_ID_NEWLM, "./my_lib.so", RTLD_LAZY);
        void (*sub1)(int) = (void (*)(int))dlsym(handle, "sub1");
        sub1(6);
        return 0;
}
$ gcc -o my_lib.so -shared -fPIC -g my_lib.c
$ gcc -o my_main_dlmopen -g my_main_dlmopen.c -ldl
$ gdb my_main_dlmopen
GNU gdb (GDB) Fedora (7.2-51.fc14)
Copyright (C) 2010 Free Software Foundation, Inc.
License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>
This is free software: you are free to change and redistribute it.
There is NO WARRANTY, to the extent permitted by law.  Type "show copying"
and "show warranty" for details.
This GDB was configured as "x86_64-redhat-linux-gnu".
For bug reporting instructions, please see:
<http://www.gnu.org/software/gdb/bugs/>...
Reading symbols from /home/gary/work/archer/my_main_dlmopen...done.
(gdb) set stop-on-solib-events 1
(gdb) r
Starting program: /home/gary/work/archer/my_main_dlmopen 
Stopped due to shared library event
(gdb) info sh
>From                To                  Syms Read   Shared Object Library
0x0000003eac600b20  0x0000003eac618c46  Yes         /lib64/ld-linux-x86-64.so.2
(gdb) c
Continuing.
Stopped due to shared library event
(gdb) info sh
>From                To                  Syms Read   Shared Object Library
0x0000003eac600b20  0x0000003eac618c46  Yes         /lib64/ld-linux-x86-64.so.2
0x0000003ead600de0  0x0000003ead601988  Yes         /lib64/libdl.so.2
0x0000003eace1eba0  0x0000003eacf45f5c  Yes         /lib64/libc.so.6
(gdb) c
Continuing.
Stopped due to shared library event
(gdb) info sh
>From                To                  Syms Read   Shared Object Library
0x0000003eac600b20  0x0000003eac618c46  Yes         /lib64/ld-linux-x86-64.so.2
0x0000003ead600de0  0x0000003ead601988  Yes         /lib64/libdl.so.2
0x0000003eace1eba0  0x0000003eacf45f5c  Yes         /lib64/libc.so.6
(gdb) c
Continuing.
Stopped due to shared library event
(gdb) info sh
>From                To                  Syms Read   Shared Object Library
0x0000003eac600b20  0x0000003eac618c46  Yes         /lib64/ld-linux-x86-64.so.2
0x0000003ead600de0  0x0000003ead601988  Yes         /lib64/libdl.so.2
0x0000003eace1eba0  0x0000003eacf45f5c  Yes         /lib64/libc.so.6
(gdb) c
Continuing.
sub1 6

Program exited normally.

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