gdb/testsuite/gdb.cp/call-method-register.exp

   1 # Copyright 1992-2021 Free Software Foundation, Inc.
   2
   3 # This program is free software; you can redistribute it and/or modify
   4 # it under the terms of the GNU General Public License as published by
   5 # the Free Software Foundation; either version 3 of the License, or
   6 # (at your option) any later version.
   7 #
   8 # This program is distributed in the hope that it will be useful,
   9 # but WITHOUT ANY WARRANTY; without even the implied warranty of
  10 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  11 # GNU General Public License for more details.
  12 #
  13 # You should have received a copy of the GNU General Public License
  14 # along with this program.  If not, see <http://www.gnu.org/licenses/>.
  15
  16 # Test callling a method on a variable that has been put in a
  17 # register.
  18
  19 if { [skip_cplus_tests] } { continue }
  20
  21 load_lib "cp-support.exp"
  22
  23 standard_testfile .cc
  24
  25 if {[prepare_for_testing "failed to prepare" $testfile $srcfile {debug c++}]} {
  26     return -1
  27 }
  28
  29 proc test_call_register_class {} {
  30     global gdb_prompt
  31
  32     if ![runto_main] {
  33         return
  34     }
  35
  36     set bp_location [gdb_get_line_number "set breakpoint here"]
  37     gdb_breakpoint $bp_location
  38     gdb_continue_to_breakpoint "break here"
  39
  40     # This class is so small that an instance of it can fit in a register.
  41     # When gdb tries to call a method, it gets embarrassed about taking
  42     # the address of a register.
  43     #
  44     # That message is a PASS, not an XFAIL, because gdb prints an
  45     # informative message and declines to do something impossible.
  46     #
  47     # The method call actually succeeds if the compiler allocates very
  48     # small classes in memory instead of registers.  If that happens,
  49     # it's a FAIL, because the testcase is written in a form such that
  50     # it should not happen.
  51     gdb_test "print v.method ()" \
  52         "Address requested for identifier \"v\" which is in register .*" \
  53         "call method on register local"
  54 }
  55
  56 test_call_register_class