gdb/testsuite/gdb.fortran/nested-funcs-2.exp

   1 # Copyright 2019-2022 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 # Further testing of placing breakpoints in nested subroutines.
  17
  18 if {[skip_fortran_tests]} { return -1 }
  19 load_lib "fortran.exp"
  20
  21 standard_testfile ".f90"
  22
  23 if {[build_executable ${testfile}.exp ${testfile} \
  24          ${srcfile} {debug f90}]} {
  25     return -1
  26 }
  27
  28 set int4 [fortran_int4]
  29
  30 # When WITH_SRC_PREFIX_P is true then some symbol references will be
  31 # prefixed with the filename.  When WITH_NEST_PREFIX_P is true then
  32 # nested subroutine symbols will be prefixed with their parent
  33 # subroutine scope.
  34 proc do_bp_tests {with_src_prefix_p with_nest_prefix_p} {
  35     global testfile srcfile
  36     global int4
  37     global hex
  38
  39     clean_restart ${testfile}
  40
  41     if { $with_src_prefix_p } {
  42         set src_prefix "${srcfile}:"
  43     } else {
  44         set src_prefix ""
  45     }
  46
  47     if { $with_nest_prefix_p } {
  48         set nest_prefix "contains_keyword::"
  49     } else {
  50         set nest_prefix ""
  51     }
  52
  53     # Test setting up breakpoints and otherwise examining nested
  54     # functions before the program starts.
  55     with_test_prefix "before start" {
  56         foreach entry \
  57             [list \
  58                  [list "increment" "${int4} \\\(${int4}\\\)"] \
  59                  [list "increment_program_global" "${int4} \\\(void\\\)"] \
  60                  [list "hidden_variable" "void \\\(void\\\)"]] {
  61                      set function [lindex $entry 0]
  62                      set type [lindex $entry 1]
  63
  64                      # Currently referencing symbols using 'info',
  65                      # 'whatis' and 'ptype' before the program is
  66                      # started doesn't work.  This is the same
  67                      # behaviour we see in C++ so I don't think this
  68                      # is a failure, just a limitation in current GDB.
  69                      if { ${with_nest_prefix_p} } {
  70                          gdb_test "info symbol ${nest_prefix}${function}" \
  71                              "${function} in section .*"
  72                          gdb_test "whatis ${nest_prefix}${function}" \
  73                              "type = ${type}"
  74                          gdb_test "ptype ${nest_prefix}${function}" \
  75                              "type = ${type}"
  76                          gdb_test "print ${nest_prefix}${function}" \
  77                              "{${type}} $hex <contains_keyword::${function}>"
  78                      }
  79
  80                      gdb_breakpoint "${src_prefix}${nest_prefix}${function}"
  81                  }
  82     }
  83
  84     # Break on a contained function and run to it.
  85     if {![runto ${src_prefix}[gdb_get_line_number "pre_init"]]} then {
  86         perror "couldn't run to breakpoint pre_init"
  87         continue
  88     }
  89
  90     # Call a contained function.
  91     if { ${with_nest_prefix_p} } {
  92         gdb_test_stdio "call ${nest_prefix}subroutine_to_call()" " called" ""
  93     }
  94
  95     # Break on another contained function and run to it.
  96     gdb_breakpoint "${src_prefix}${nest_prefix}increment"
  97     gdb_continue_to_breakpoint "increment" ".*increment = i \\\+ 1"
  98     gdb_breakpoint ${src_prefix}[gdb_get_line_number "post_increment"]
  99     gdb_continue_to_breakpoint "post_increment"
 100
 101     # Check arguments and locals report the correct values. 12 is
 102     # passed in and 13 is the result after adding 1.
 103     gdb_test "info args" "i = 12"
 104     gdb_test "info locals" " = 13"
 105
 106     # Check we can see variables from an outer program scope.
 107     gdb_breakpoint ${src_prefix}[gdb_get_line_number "post_increment_global"]
 108     gdb_continue_to_breakpoint "post_increment_global" \
 109         ".*print \\\*, program_i ! post_increment_global"
 110     gdb_test "info args" "No arguments." \
 111         "no argument subroutine has no arguments"
 112     gdb_test "p program_i" " = 7" "printing outer scoped variable"
 113
 114     # Stepping into a contained subroutine.
 115     gdb_breakpoint ${src_prefix}[gdb_get_line_number "pre_step"]
 116     gdb_continue_to_breakpoint "pre_step" ".*call step\\\(\\\) ! pre_step"
 117     gdb_test "step" \
 118         ".*print '\\\(A\\\)', \\\"step\\\" ! post_step" \
 119         "step into the correct place"
 120
 121     # Local hides program global.
 122     gdb_breakpoint ${src_prefix}[gdb_get_line_number "post_hidden"]
 123     gdb_continue_to_breakpoint "post_hidden" \
 124         ".*print \\\*, program_i ! post_hidden"
 125     gdb_test "p program_i" " = 30" "printing hidden global"
 126
 127     # Check info symbol, whatis and ptype can find information on
 128     # these nested functions.
 129     foreach entry \
 130         [list \
 131              [list "increment" "${int4} \\\(${int4}\\\)"] \
 132              [list "increment_program_global" "${int4} \\\(void\\\)"]] {
 133                  set function [lindex $entry 0]
 134                  set type [lindex $entry 1]
 135                  with_test_prefix $function {
 136                      gdb_test "info symbol ${nest_prefix}$function" \
 137                          "$function in section .*"
 138                      gdb_test "whatis ${nest_prefix}$function" \
 139                          "type = ${type}"
 140                      gdb_test "ptype ${nest_prefix}$function" \
 141                          "type = ${type}"
 142                  }
 143              }
 144 }
 145
 146 foreach_with_prefix src_prefix { 0 1 } {
 147     foreach_with_prefix nest_prefix { 0 1 } {
 148         do_bp_tests ${src_prefix} ${nest_prefix}
 149     }
 150 }