[Bug dynamic-link/23206] static-pie + dlopen breaks debugger interaction

["ppluzhnikov at google dot com" <sourceware-bugzilla at sourceware dot org>]

https://sourceware.org/bugzilla/show_bug.cgi?id=23206

--- Comment #2 from Paul Pluzhnikov <ppluzhnikov at google dot com> ---
The d82c7e2f4180e2d56ca66e3620dc344b0d72ca94 patch appears to fix everything:

Reading symbols from ./a.out...done.
(gdb) set stop-on-solib-events 1
(gdb) run
Starting program: /tmp/bz23206/a.out 
Stopped due to shared library event (no libraries added or removed)
(gdb) c
Continuing.
Stopped due to shared library event:
  Inferior loaded ./libfoo.so
    /lib64/libc.so.6
    /lib64/ld-linux-x86-64.so.2
(gdb) info shared
>From                To                  Syms Read   Shared Object Library
0x00007ffff7b4e550  0x00007ffff7b4e622  Yes         ./libfoo.so
0x00007ffff77b0340  0x00007ffff78f725f  Yes         /lib64/libc.so.6
0x00007ffff7567f60  0x00007ffff7584910  Yes         /lib64/ld-linux-x86-64.so.2

(gdb) c
Continuing.
DT_DEBUG: 0x7ffff7ffe8c0

Program received signal SIGABRT, Aborted.
__GI_raise (sig=sig@entry=6) at ../sysdeps/unix/sysv/linux/raise.c:50
50        return ret;
(gdb) bt
#0  __GI_raise (sig=sig@entry=6) at ../sysdeps/unix/sysv/linux/raise.c:50
#1  0x00007ffff77b0561 in __GI_abort () at abort.c:79
#2  0x00007ffff7b4e612 in bar () at foo.c:5
#3  0x00007ffff7b4e61b in foo () at foo.c:11
#4  0x00007ffff7d58e7c in main () at t.c:20

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