gdb/testsuite/gdb.base/longjmp-until-in-main.exp

   1 # Copyright 2022-2023 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 "until LINE", started in the "main()" frame, where the until
  17 # command runs into a longjmp that lands in a frame that is inner than
  18 # main.  GDB internally intercepts the longjmp, sets a breakpoint at
  19 # the jump destination, and once there, decides whether to stop or
  20 # ignore the breakpoint hit depending on whether the initiating frame
  21 # is present on the frame chain.  GDB used to have a bug where it
  22 # recorded the frame of the caller of main instead of the frame of
  23 # main as the initiating frame, and then later on when deciding
  24 # whether the longjmp landed somewhere inner than main, since
  25 # unwinding normally stops at main, GDB would fail to find the
  26 # initiating frame.
  27
  28 standard_testfile
  29
  30 if {[prepare_for_testing "failed to prepare" ${testfile} ${srcfile}]} {
  31     return
  32 }
  33
  34 if {![runto_main]} {
  35     return
  36 }
  37
  38 delete_breakpoints
  39
  40 set until_to_line [gdb_get_line_number "until to here"]
  41
  42 gdb_test "until $until_to_line" \
  43     " until to here .*" \
  44     "until \$line, in main"