1# Copyright 2009, 2010, 2011 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 31if { [skip_shlib_tests] || [is_remote target] } { 32 return 0 33} 34 35# Library file. 36set libname "solib-display-lib" 37set srcfile_lib ${srcdir}/${subdir}/${libname}.c 38set binfile_lib ${objdir}/${subdir}/${libname}.so 39set lib_flags {} 40# Binary file. 41set testfile "solib-display-main" 42set srcfile ${srcdir}/${subdir}/${testfile}.c 43set executable ${testfile} 44set binfile ${objdir}/${subdir}/${executable} 45set bin_flags [list debug shlib=${binfile_lib}] 46 47if [get_compiler_info ${binfile}] { 48 return -1 49} 50 51set save_pf_prefix $pf_prefix 52# SEP must be last for the possible `unsupported' error path. 53foreach libsepdebug {NO IN SEP} { 54 55 set pf_prefix $save_pf_prefix 56 lappend pf_prefix "$libsepdebug:" 57 58 set sep_lib_flags $lib_flags 59 if {$libsepdebug != "NO"} { 60 lappend sep_lib_flags {debug} 61 } 62 if { [gdb_compile_shlib ${srcfile_lib} ${binfile_lib} $sep_lib_flags] != "" 63 || [gdb_compile ${srcfile} ${binfile} executable $bin_flags] != "" } { 64 untested "Could not compile $binfile_lib or $binfile." 65 return -1 66 } 67 68 if {$libsepdebug == "SEP"} { 69 if {[gdb_gnu_strip_debug $binfile_lib] != 0} { 70 unsupported "Could not split debug of $binfile_lib." 71 return 72 } else { 73 pass "split solib" 74 } 75 } 76 77 clean_restart $executable 78 79 if ![runto_main] then { 80 fail "Can't run to main" 81 return 0 82 } 83 84 gdb_test "display a_global" "1: a_global = 41" 85 gdb_test "display b_global" "2: b_global = 42" 86 gdb_test "display c_global" "3: c_global = 43" 87 88 if { [gdb_start_cmd] < 0 } { 89 fail "Can't run to main (2)" 90 continue 91 } 92 93 gdb_test "" "3: c_global = 43\\r\\n2: b_global = 42\\r\\n1: a_global = 41" "after rerun" 94 95 # Now rebuild the library without b_global 96 if { [gdb_compile_shlib ${srcfile_lib} ${binfile_lib} \ 97 "$sep_lib_flags additional_flags=-DNO_B_GLOBAL"] != ""} { 98 fail "Can't rebuild $binfile_lib" 99 } 100 101 if {$libsepdebug == "SEP"} { 102 set test "split solib second time" 103 if {[gdb_gnu_strip_debug $binfile_lib] != 0} { 104 fail $test 105 continue 106 } else { 107 pass $test 108 } 109 } 110 111 if { [gdb_start_cmd] < 0 } { 112 fail "Can't run to main (3)" 113 continue 114 } 115 116 gdb_test "" "3: c_global = 43\\r\\nwarning: .*b_global.*\\r\\n1: a_global = 41" "after rerun (2)" 117 118 # Now verify that displays which are not in the shared library 119 # are not cleared permaturely. 120 121 gdb_test "break [gdb_get_line_number "break here" ${testfile}.c]" \ 122 ".*Breakpoint.* at .*" 123 124 gdb_test "continue" 125 gdb_test "display main_global" "4: main_global = 44" 126 gdb_test "display a_local" "5: a_local = 45" 127 gdb_test "display a_static" "6: a_static = 46" 128 129 if { [gdb_start_cmd] < 0 } { 130 fail "Can't run to main (4)" 131 continue 132 } 133 134 gdb_test "" "6: a_static = 46\\r\\n4: main_global = 44\\r\\n.*" 135 gdb_test "break [gdb_get_line_number "break here" ${testfile}.c]" \ 136 ".*Breakpoint.* at .*" 137 gdb_test "continue" "6: a_static = 46\\r\\n5: a_local = 45\\r\\n4: main_global = 44\\r\\n.*" 138} 139set pf_prefix $save_pf_prefix 140