gdb/testsuite/gdb.base/gcore-buffer-overflow.exp

   1 # Copyright 2007, 2008, 2009, 2010 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 GDB's internal buffers safety for the GCORE command.
  17
  18 if $tracelevel then {
  19         strace $tracelevel
  20 }
  21
  22 set prms_id 0
  23 set bug_id 0
  24
  25 set testfile "gcore-buffer-overflow"
  26 set srcfile  ${testfile}.c
  27 # The ${binfile} basename needs to exceed 80 characters (`sizeof (psargs)')
  28 # plus some additional data to overwrite the stack frame.
  29 set pattern  01234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789
  30 set binfile  ${objdir}/${subdir}/${testfile}-${pattern}
  31
  32 if  { [gdb_compile "${srcdir}/${subdir}/${srcfile}" "${binfile}" executable {debug}] != "" } {
  33      untested gcore.exp
  34      return -1
  35 }
  36
  37 # Start with a fresh gdb.
  38
  39 gdb_exit
  40 gdb_start
  41 gdb_reinitialize_dir $srcdir/$subdir
  42 gdb_load ${binfile}
  43
  44 # Does this gdb support gcore?
  45 send_gdb "help gcore\n"
  46 gdb_expect {
  47     -re "Undefined command: .gcore.*$gdb_prompt $" {
  48         # gcore command not supported -- nothing to test here.
  49         unsupported "gdb does not support gcore on this target"
  50         return -1;
  51     }
  52     -re "Save a core file .*$gdb_prompt $" {
  53         pass "help gcore"
  54     }
  55     -re ".*$gdb_prompt $" {
  56         fail "help gcore"
  57     }
  58     timeout {
  59         fail "help gcore (timeout)"
  60     }
  61 }
  62
  63 gdb_test "set args ${pattern}"  \
  64          ""                     \
  65          "Set buffer exceeding arguments"
  66
  67 if { ! [ runto_main ] } then {
  68     untested gcore-buffer-overflow.exp
  69     return -1
  70 }
  71
  72 set escapedfilename [string_to_regexp ${objdir}/${subdir}/gcore-buffer-overflow.test]
  73
  74 set test "save a corefile"
  75 gdb_test_multiple "gcore ${objdir}/${subdir}/gcore-buffer-overflow.test" $test {
  76     -re "Saved corefile ${escapedfilename}\[\r\n\]+$gdb_prompt $" {
  77         pass $test
  78     }
  79     -re "Can't create a corefile\[\r\n\]+$gdb_prompt $" {
  80         unsupported $test
  81     }
  82     eof {
  83         fail $test
  84     }
  85 }