[Bug breakpoints/23210] New: Bogus Breakpoint address adjusted from 0xf7fe7dd3 to 0xfffffffff7fe7dd3.

["hjl.tools at gmail dot com" <sourceware-bugzilla at sourceware dot org>]

https://sourceware.org/bugzilla/show_bug.cgi?id=23210

            Bug ID: 23210
           Summary: Bogus Breakpoint address adjusted from 0xf7fe7dd3 to
                    0xfffffffff7fe7dd3.
           Product: gdb
           Version: HEAD
            Status: NEW
          Severity: normal
          Priority: P2
         Component: breakpoints
          Assignee: unassigned at sourceware dot org
          Reporter: hjl.tools at gmail dot com
  Target Milestone: ---

On x86-64, I got

(gdb) file
/export/build/gnu/gdb/build-x86_64-linux/gdb/testsuite/outputs/gdb.multi/multi-arch-exec/2-multi-arch-exec^M
Reading symbols from
/export/build/gnu/gdb/build-x86_64-linux/gdb/testsuite/outputs/gdb.multi/multi-arch-exec/2-multi-arch-exec...done.^M
(gdb) delete breakpoints^M
(gdb) info breakpoints^M
No breakpoints or watchpoints.^M
(gdb) break all_started^M
Breakpoint 1 at 0x804923b: file
/export/gnu/import/git/sources/binutils-gdb/gdb/testsuite/gdb.multi/multi-arch-exec.c,
line 42.^M
(gdb) run ^M
Starting program:
/export/build/gnu/gdb/build-x86_64-linux/gdb/testsuite/outputs/gdb.multi/multi-arch-exec/2-multi-arch-exec
^M
warning: Breakpoint address adjusted from 0xf7fd6b51 to 0xfffffffff7fd6b51.^M
warning: Breakpoint address adjusted from 0xf7fd7529 to 0xfffffffff7fd7529.^M
warning: Breakpoint address adjusted from 0xf7fd9a8c to 0xfffffffff7fd9a8c.^M
warning: Breakpoint address adjusted from 0xf7fd9614 to 0xfffffffff7fd9614.^M
warning: Breakpoint address adjusted from 0xf7fe7dd3 to 0xfffffffff7fe7dd3.^M
warning: Breakpoint address adjusted from 0xf7fe8a56 to 0xfffffffff7fe8a56.^M
warning: Breakpoint address adjusted from 0xf7fe8d14 to 0xfffffffff7fe8d14.^M
                                          ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
On x86-64, address should be zero-extended, not sign-extended.
FAIL: gdb.multi/multi-arch-exec.exp: first_arch=2: selected_thread=2:
follow_exec_mode=same: couldn't run to all_started

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