[Bug breakpoints/22567] pending breakpoint location's gdbarch is incorrect after it is resolved

["qiyao at gcc dot gnu.org" <sourceware-bugzilla at sourceware dot org>]

https://sourceware.org/bugzilla/show_bug.cgi?id=22567

Yao Qi <qiyao at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Target|                            |x86_64-pc-linux-gnu
             Status|NEW                         |ASSIGNED
               Host|                            |x86_64-pc-linux-gnu
           Assignee|unassigned at sourceware dot org   |qiyao at gcc dot gnu.org
   Target Milestone|---                         |8.1

--- Comment #1 from Yao Qi <qiyao at gcc dot gnu.org> ---
GDB 8.0 is correct, so it is a regression.

(gdb) b set_point1
No symbol table is loaded.  Use the "file" command.
Make breakpoint pending on future shared library load? (y or [n]) y
Breakpoint 1 (set_point1) pending.
(gdb) file ./testsuite/outputs/gdb.trace/pending/pending 
Reading symbols from ./testsuite/outputs/gdb.trace/pending/pending...done.
(gdb) b main
Breakpoint 2 at 0x4007c5: file
/home/yao.qi/SourceCode/gnu/gdb-8/build-8.0/gdb/testsuite/../../../gdb-8.0/gdb/testsuite/gdb.trace/pending.c,
line 28.
(gdb) run
Starting program:
/home/yao.qi/SourceCode/gnu/gdb-8/build-8.0/gdb/testsuite/outputs/gdb.trace/pending/pending 
Python Exception <type 'exceptions.NameError'> Installation error:
gdb.execute_unwinders function is missing: 
Python Exception <type 'exceptions.NameError'> Installation error:
gdb.execute_unwinders function is missing: 
[Thread debugging using libthread_db enabled]
Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
[New Thread 0x7ffff63b2700 (LWP 24608)]

Thread 1 "pending" hit Breakpoint 2, Python Exception <type
'exceptions.NameError'> Installation error: gdb.execute_unwinders function is
missing: 
main ()
    at
/home/yao.qi/SourceCode/gnu/gdb-8/build-8.0/gdb/testsuite/../../../gdb-8.0/gdb/testsuite/gdb.trace/pending.c:28
28        const char *libname = "pendshr2.sl";
(gdb) info breakpoints 
Num     Type           Disp Enb Address            What
1       breakpoint     keep y   0x00007ffff7bd569e <pendfunc+7>
                                ^^^^^^^^^^^^^^^^^^
2       breakpoint     keep y   0x00000000004007c5 in main 
                                                   at
/home/yao.qi/SourceCode/gnu/gdb-8/build-8.0/gdb/testsuite/../../../gdb-8.0/gdb/testsuite/gdb.trace/pending.c:28
        breakpoint already hit 1 time
(gdb) p set_point1
$1 = {<text variable, no debug info>} 0x7ffff7bd569e <pendfunc+7>

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