break-interp.exp, and attaching with no file loaded

[Pedro Alves <palves at redhat dot com>]

The testfile contains tests where gdb attaches to a process without
loading a file, and so with extend-remote gdbserver, given that gdb can't figure
out automatically what was the executable, things fall apart.  Jan, is there a
reason the test can't be changed to always have gdb load the executable?  I don't
pretend to understand most of this test yet.

With the hacks below, break-interp.exp passes cleanly against a local
extended-remote gdbserver.

-- 
Pedro Alves
diff --git a/gdb/testsuite/gdb.base/break-interp.exp b/gdb/testsuite/gdb.base/break-interp.exp
index 04b5eab..dfdc4bb 100644
--- a/gdb/testsuite/gdb.base/break-interp.exp
+++ b/gdb/testsuite/gdb.base/break-interp.exp
@@ -272,6 +272,10 @@ proc test_attach_gdb {file pid displacement prefix} {
 	    # Missing "$gdb_prompt $" is intentional.
 	    pass $test
 	}
+	-re "Attached to process $pid\r\n" {
+	    # Missing "$gdb_prompt $" is intentional.
+	    pass $test
+	}
     }

     set test "attach final prompt"
@@ -336,7 +340,8 @@ proc test_attach {file displacement {relink_args ""}} {
     }

     if {$relink_args == ""} {
-	test_attach_gdb "" $pid $displacement "attach"
+	global exec
+	test_attach_gdb $exec $pid $displacement "attach"
     } else {
 	# These could be rather passed as arguments.
 	global exec interp_saved interp
@@ -447,6 +452,8 @@ proc test_ld {file ifmain trynosym displacement} {
     # Test no (error) message has been printed by `exec-file'.
     set escapedfile [string_to_regexp $file]
     gdb_test "exec-file $file" "exec-file $escapedfile" "load"
+    # Needs abstraction
+    gdb_test "set remote exec-file $file" "exec-file $escapedfile" "remote load"

     if $ifmain {
 	reach "_dl_debug_state" run $displacement