gdb/testsuite/gdb.base/solib-display.exp

   1 # Copyright 2009 Free Software Foundation, Inc.
   2 # This program is free software; you can redistribute it and/or modify
   3 # it under the terms of the GNU General Public License as published by
   4 # the Free Software Foundation; either version 3 of the License, or
   5 # (at your option) any later version.
   6 #
   7 # This program is distributed in the hope that it will be useful,
   8 # but WITHOUT ANY WARRANTY; without even the implied warranty of
   9 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  10 # GNU General Public License for more details.
  11 #
  12 # You should have received a copy of the GNU General Public License
  13 # along with this program.  If not, see <http://www.gnu.org/licenses/>.
  14 #
  15 # Contributed by Paul Pluzhnikov <ppluzhnikov@google.com>
  16 #
  17
  18 # This test case verifies that if a display is active on a variable
  19 # which belongs in a shared library, and that shared library is
  20 # reloaded (e.g. due to re-execution of the program), GDB will continue
  21 # to display it (gdb-6.8 crashed under this scenario).
  22
  23 # Also test that a display of variable which is currently present in
  24 # a shared library, but disappears before re-run, doesn't cause GDB
  25 # difficulties, and that it continues to display other variables.
  26
  27 # Finally, test that displays which refer to main executable
  28 # (and thus aren't affected by shared library unloading) are not
  29 # disabled prematurely.
  30
  31 if { [skip_shlib_tests] || [is_remote target] } {
  32     return 0
  33 }
  34
  35 # Library file.
  36 set libname "solib-display-lib"
  37 set srcfile_lib ${srcdir}/${subdir}/${libname}.c
  38 set binfile_lib ${objdir}/${subdir}/${libname}.so
  39 set lib_flags [list debug]
  40 # Binary file.
  41 set testfile "solib-display-main"
  42 set srcfile ${srcdir}/${subdir}/${testfile}.c
  43 set binfile ${objdir}/${subdir}/${testfile}
  44 set bin_flags [list debug shlib=${binfile_lib}]
  45
  46 if [get_compiler_info ${binfile}] {
  47     return -1
  48 }
  49
  50 if { [gdb_compile_shlib ${srcfile_lib} ${binfile_lib} $lib_flags] != ""
  51      || [gdb_compile ${srcfile} ${binfile} executable $bin_flags] != "" } {
  52   untested "Could not compile $binfile_lib or $binfile."
  53   return -1
  54 }
  55
  56 gdb_exit
  57 gdb_start
  58 gdb_reinitialize_dir $srcdir/$subdir
  59 gdb_load ${binfile}
  60
  61 if ![runto_main] then {
  62   fail "Can't run to main"
  63   return 0
  64 }
  65
  66 gdb_test "display a_global" "1: a_global = 41"
  67 gdb_test "display b_global" "2: b_global = 42"
  68 gdb_test "display c_global" "3: c_global = 43"
  69
  70 if { [gdb_start_cmd] < 0 } {
  71     fail "Can't run to main (2)"
  72     return 0
  73 }
  74
  75 gdb_test "" "3: c_global = 43\\r\\n2: b_global = 42\\r\\n1: a_global = 41" "after rerun"
  76
  77 # Now rebuild the library without b_global
  78 if { [gdb_compile_shlib ${srcfile_lib} ${binfile_lib} \
  79           "$lib_flags additional_flags=-DNO_B_GLOBAL"] != ""} {
  80     fail "Can't rebuild $binfile_lib"
  81 }
  82
  83 if { [gdb_start_cmd] < 0 } {
  84     fail "Can't run to main (3)"
  85     return 0
  86 }
  87
  88 gdb_test "" "3: c_global = 43\\r\\nwarning: .*b_global.*\\r\\n1: a_global = 41" "after rerun"
  89
  90 # Now verify that displays which are not in the shared library
  91 # are not cleared permaturely.
  92
  93 gdb_test "break [gdb_get_line_number "break here" ${testfile}.c]" \
  94         ".*Breakpoint.* at .*"
  95
  96 gdb_test "continue"
  97 gdb_test "display main_global" "4: main_global = 44"
  98 gdb_test "display a_local" "5: a_local = 45"
  99 gdb_test "display a_static" "6: a_static = 46"
 100
 101 if { [gdb_start_cmd] < 0 } {
 102     fail "Can't run to main (4)"
 103     return 0
 104 }
 105
 106 gdb_test "" "6: a_static = 46\\r\\n4: main_global = 44\\r\\n.*"
 107 gdb_test "break [gdb_get_line_number "break here" ${testfile}.c]" \
 108         ".*Breakpoint.* at .*"
 109 gdb_test "continue" "6: a_static = 46\\r\\n5: a_local = 45\\r\\n4: main_global = 44\\r\\n.*"
 110
 111 gdb_exit
 112
 113 return 0
 114
 115