gdb/testsuite/gdb.base/print-file-var.exp

   1 # Copyright 2012-2017 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 if {[skip_shlib_tests]} {
  17     return -1
  18 }
  19
  20 set executable print-file-var-main
  21
  22 set lib1 "print-file-var-lib1"
  23 set lib2 "print-file-var-lib2"
  24
  25 set libobj1 [standard_output_file ${lib1}.so]
  26 set libobj2 [standard_output_file ${lib2}.so]
  27
  28 set lib_opts { debug additional_flags=-fPIC }
  29
  30 if { [gdb_compile_shlib ${srcdir}/${subdir}/${lib1}.c \
  31                         ${libobj1} \
  32                         ${lib_opts} ] != "" } {
  33     return -1
  34 }
  35 if { [gdb_compile_shlib ${srcdir}/${subdir}/${lib2}.c \
  36                         ${libobj2} \
  37                         ${lib_opts} ] != "" } {
  38     return -1
  39 }
  40 if { [gdb_compile "${srcdir}/${subdir}/${executable}.c" \
  41                   [standard_output_file ${executable}] \
  42                   executable \
  43                   [list debug shlib=${libobj1} shlib=${libobj2}]]
  44      != ""} {
  45     return -1
  46 }
  47
  48 clean_restart $executable
  49 gdb_load_shlib $libobj1
  50 gdb_load_shlib $libobj2
  51
  52 if ![runto_main] {
  53     untested "could not run to main"
  54     return -1
  55 }
  56
  57 # Try printing "this_version_num" qualified with the name of the file
  58 # where the variables are defined.  There are two global variables
  59 # with that name, and some systems such as GNU/Linux merge them
  60 # into one single entity, while some other systems such as Windows
  61 # keep them separate.  In the first situation, we have to verify
  62 # that GDB does not randomly select the wrong instance, even when
  63 # a specific filename is used to qualified the lookup.  And in the
  64 # second case, we have to verify that GDB does select the instance
  65 # defined in the given filename.
  66 #
  67 # To avoid adding target-specific code in this testcase, the program
  68 # sets two local variable named 'v1' and 'v2' with the value of
  69 # our global variables.  This allows us to compare the value that
  70 # GDB returns for each query against the actual value seen by
  71 # the program itself.
  72
  73 # Get past the initialization of variables 'v1' and 'v2'.
  74
  75 set bp_location \
  76     [gdb_get_line_number "STOP" "${executable}.c"]
  77 gdb_test "break $executable.c:$bp_location" \
  78          "Breakpoint \[0-9\]+ at 0x\[0-9a-fA-F\]+: .*" \
  79          "breapoint past v1 & v2 initialization"
  80
  81 gdb_test "continue" \
  82          "Breakpoint \[0-9\]+, main \\(\\) at.*STOP.*" \
  83          "continue to STOP marker"
  84
  85 # Now check the value of this_version_id in both print-file-var-lib1.c
  86 # and print-file-var-lib2.c.
  87
  88 gdb_test "print 'print-file-var-lib1.c'::this_version_id == v1" \
  89          " = 1"
  90
  91 gdb_test "print 'print-file-var-lib2.c'::this_version_id == v2" \
  92          " = 1"