gdb/testsuite/gdb.base/chng-syms.exp

   1 # Copyright 2004, 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 # Author: Paul N. Hilfinger (Hilfinger@gnat.com)
  17
  18 # Test that GDB cleans up properly after errors that result when a
  19 # breakpoint is reset.
  20
  21 if $tracelevel then {
  22         strace $tracelevel
  23 }
  24
  25
  26 # IDT/SIM apparently doesn't have enough file descriptors to allow the
  27 # problem checked by this test to occur.
  28 if [istarget "mips-idt-*"] {
  29     return 0;
  30 }
  31
  32 set testfile "chng-syms"
  33 set srcfile ${testfile}.c
  34 set binfile ${objdir}/${subdir}/${testfile}
  35
  36 if  { [gdb_compile "${srcdir}/${subdir}/${srcfile}" "${binfile}" executable {debug additional_flags=-DVARIABLE=var1}] != "" } {
  37     untested chng-syms.exp
  38     return -1
  39 }
  40
  41 set oldtimeout $timeout
  42 set timeout 10
  43 verbose "Timeout is now 10 seconds" 2
  44
  45 proc expect_to_stop_here { ident } {
  46     global gdb_prompt
  47     global decimal
  48
  49     # the "at foo.c:36" output we get with -g.
  50     # the "in func" output we get without -g.
  51     gdb_expect {
  52         -re "Breakpoint \[0-9\]*, stop_here .*$gdb_prompt $" {
  53             return 1
  54         }
  55         -re "$gdb_prompt $" {
  56             fail "running to stop_here $ident"
  57             return 0
  58         }
  59         timeout {
  60             fail "running to stop_here $ident (timeout)"
  61             return 0
  62         }
  63     }
  64     return 1
  65 }
  66
  67 gdb_exit
  68 gdb_start
  69 gdb_reinitialize_dir $srcdir/$subdir
  70 gdb_load ${binfile}
  71
  72 gdb_test "break stop_here if (var1 == 42)" \
  73     "Breakpoint.*at.* file .*$srcfile, line.*" \
  74     "setting conditional breakpoint on function"
  75 gdb_run_cmd
  76
  77 expect_to_stop_here "first time"
  78
  79 gdb_continue_to_end "breakpoint first time through"
  80
  81 # Now we recompile the executable, but without a variable named "var1", first
  82 # waiting to insure that even on fast machines, the file modification times
  83 # are distinct. This will force GDB to reload the file on the
  84 # next "run" command, causing an error when GDB tries to tries to reset
  85 # the breakpoint.
  86
  87 sleep 2
  88 if  { [gdb_compile "${srcdir}/${subdir}/${srcfile}" "${binfile}" executable {debug additional_flags=-DVARIABLE=var2}] != "" } {
  89
  90 # Complication: Since GDB generally holds an open file descriptor on the
  91 # executable at this point, there are some systems in which the
  92 # re-compilation will fail. In such cases, we'll consider the test
  93 # (vacuously) passed providing that re-running it succeeds as before.
  94
  95     gdb_run_cmd
  96     expect_to_stop_here "after re-compile fails"
  97     gdb_continue_to_end "after re-compile fails"
  98
  99 } else {
 100
 101     gdb_run_cmd
 102     gdb_expect {
 103         -re ".*Program exited normally.*$gdb_prompt $" {
 104             pass "running with invalidated bpt condition after executable changes"
 105         }
 106         -re ".*Breakpoint .*,( 0x.* in)? (\[^ \]*)exit .*$gdb_prompt $" {
 107             pass "running with invalidated bpt condition after executable changes"
 108         }
 109         -re "$gdb_prompt $" {
 110             fail "running with invalidated bpt condition after executable changes"
 111         }
 112         timeout {
 113             fail "(timeout) running with invalidated bpt condition after executable changes"
 114         }
 115     }
 116
 117 }
 118
 119 set timeout $oldtimeout
 120 verbose "Timeout is now $timeout seconds" 2
 121 return 0