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 16set prototypes 1 17 18# Build programs in PIE mode, to reproduce PR 21555. 19foreach_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 145return 0 146