gdb/testsuite/gdb.base/reread.exp

   1 # Copyright 1998-2019 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 set prototypes 1
  17
  18 # Build programs in PIE mode, to reproduce PR 21555.
  19 foreach_with_prefix opts {
  20     { "" "" }
  21     { "-fPIE" "ldflags=-pie" } } {
  22
  23         # build the first test case
  24
  25         set testfile1 "reread1"
  26         set srcfile1 ${testfile1}.c
  27         # Cygwin needs $EXEEXT.
  28         set binfile1 [standard_output_file ${testfile1}$EXEEXT]
  29
  30         set testfile1_opt [list debug nowarnings \
  31                                additional_flags=[lindex $opts 0] \
  32                                [lindex $opts 1] ]
  33         if  { [gdb_compile "${srcdir}/${subdir}/${srcfile1}" "${binfile1}" \
  34                    executable ${testfile1_opt}] != "" } {
  35             untested "failed to compile first testcase"
  36             return -1
  37         }
  38
  39         # build the second test case
  40
  41         set testfile2 "reread2"
  42         set srcfile2 ${testfile2}.c
  43         set binfile2 [standard_output_file ${testfile2}$EXEEXT]
  44
  45         set testfile2_opt1 [list debug nowarnings \
  46                                 additional_flags=[lindex $opts 0] \
  47                                 [lindex $opts 1]]
  48         set testfile2_op2 [list debug nowarnings \
  49                                "additional_flags=-DNO_SECTIONS [lindex $opts 0]" \
  50                                [lindex $opts 1]]
  51         if  { [gdb_compile "${srcdir}/${subdir}/${srcfile2}" "${binfile2}" \
  52                    executable ${testfile2_opt1}] != ""
  53               && [gdb_compile "${srcdir}/${subdir}/${srcfile2}" "${binfile2}" \
  54                       executable ${testfile2_opt2}] != ""} {
  55             untested "failed to compile second testcase"
  56             return -1
  57         }
  58
  59         # Start with a fresh gdb.
  60
  61         set testfile "reread"
  62         set binfile [standard_output_file ${testfile}$EXEEXT]
  63
  64         gdb_start
  65         gdb_reinitialize_dir $srcdir/$subdir
  66
  67         # Load the first executable.
  68
  69         gdb_rename_execfile ${binfile1} ${binfile}
  70         gdb_load ${binfile}
  71
  72         # Set a breakpoint at foo
  73
  74         gdb_test "break foo" \
  75             "Breakpoint.*at.* file .*$srcfile1, line 14.*" \
  76             "breakpoint foo in first file"
  77
  78
  79         # Run, should see "Breakpoint 1, foo () at hello1.c:14"
  80
  81         gdb_run_cmd
  82         gdb_test "" "Breakpoint.* foo .* at .*$srcfile1:14.*" "run to foo()"
  83
  84         # Restore first executable to its original name, and move
  85         # second executable into its place.  Ensure that the new
  86         # executable is at least a second newer than the old.
  87
  88         gdb_rename_execfile ${binfile} ${binfile1}
  89         gdb_rename_execfile ${binfile2} ${binfile}
  90         gdb_test "shell sleep 1" ".*" ""
  91         gdb_touch_execfile ${binfile}
  92
  93         # Run a second time; GDB should detect that the executable has changed
  94         # and reset the breakpoints correctly.
  95         # Should see "Breakpoint 1, foo () at reread2.c:9"
  96
  97         set test "run to foo() second time"
  98         if [is_remote target] {
  99             unsupported $test
 100         } else {
 101             gdb_run_cmd
 102             gdb_test "" "Breakpoint.* foo .* at .*:9.*" $test
 103         }
 104
 105
 106         ### Second pass: verify that GDB checks the executable file's
 107         ### timestamp when the program is *restarted*, not just when it exits.
 108
 109         if [is_remote target] {
 110             unsupported "second pass: GDB should check for changes before running"
 111         } else {
 112
 113             # Put the older executable back in place.
 114             gdb_rename_execfile ${binfile} ${binfile2}
 115             gdb_rename_execfile ${binfile1} ${binfile}
 116
 117             # Restart GDB entirely.
 118             clean_restart ${binfile}
 119
 120             # Set a breakpoint on foo and run to it.
 121             gdb_test "break foo" \
 122                 "Breakpoint.*at.* file .*$srcfile1, line 14.*" \
 123                 "second pass: breakpoint foo in first file"
 124             gdb_run_cmd
 125             gdb_test "" "Breakpoint.* foo .* at .*$srcfile1:14.*" \
 126                 "second pass: run to foo()"
 127
 128             # This time, let the program run to completion.  If GDB checks the
 129             # executable file's timestamp now, it won't notice any change.
 130             gdb_continue_to_end "second pass"
 131
 132             # Now move the newer executable into place, and re-run.  GDB
 133             # should still notice that the executable file has changed,
 134             # and still re-set the breakpoint appropriately.
 135             gdb_rename_execfile ${binfile} ${binfile1}
 136             gdb_rename_execfile ${binfile2} ${binfile}
 137             gdb_run_cmd
 138             gdb_test "" "Breakpoint.* foo .* at .*:9.*" \
 139                 "second pass: run to foo() second time"
 140         }
 141
 142     }
 143 # End of tests.
 144
 145 return 0