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

   1 # Copyright 2007, 2008, 2009, 2010, 2011 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
  23 set testfile "gcore-buffer-overflow"
  24 set srcfile  ${testfile}.c
  25 # The ${binfile} basename needs to exceed 80 characters (`sizeof (psargs)')
  26 # plus some additional data to overwrite the stack frame.
  27 set pattern  01234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789
  28 set binfile  ${objdir}/${subdir}/${testfile}-${pattern}
  29
  30 if  { [gdb_compile "${srcdir}/${subdir}/${srcfile}" "${binfile}" executable {debug}] != "" } {
  31      untested gcore.exp
  32      return -1
  33 }
  34
  35 # Start with a fresh gdb.
  36
  37 gdb_exit
  38 gdb_start
  39 gdb_reinitialize_dir $srcdir/$subdir
  40 gdb_load ${binfile}
  41
  42 # Does this gdb support gcore?
  43 gdb_test_multiple "help gcore" "help gcore" {
  44     -re "Undefined command: .gcore.*$gdb_prompt $" {
  45         # gcore command not supported -- nothing to test here.
  46         unsupported "gdb does not support gcore on this target"
  47         return -1;
  48     }
  49     -re "Save a core file .*$gdb_prompt $" {
  50         pass "help gcore"
  51     }
  52 }
  53
  54 gdb_test_no_output "set args ${pattern}"        \
  55     "Set buffer exceeding arguments"
  56
  57 if { ! [ runto_main ] } then {
  58     untested gcore-buffer-overflow.exp
  59     return -1
  60 }
  61
  62 set escapedfilename [string_to_regexp ${objdir}/${subdir}/gcore-buffer-overflow.test]
  63
  64 set test "save a corefile"
  65 gdb_test_multiple "gcore ${objdir}/${subdir}/gcore-buffer-overflow.test" $test {
  66     -re "Saved corefile ${escapedfilename}\[\r\n\]+$gdb_prompt $" {
  67         pass $test
  68     }
  69     -re "Can't create a corefile\[\r\n\]+$gdb_prompt $" {
  70         unsupported $test
  71     }
  72     eof {
  73         fail $test
  74     }
  75 }