gdb/testsuite/gdb.fortran/function-calls.exp

   1 # Copyright 2019-2021 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 # Exercise passing and returning arguments in Fortran. This test case
  17 # is based on the GNU Fortran Argument passing conventions.
  18
  19 if {[skip_fortran_tests]} { return -1 }
  20
  21 standard_testfile ".f90"
  22
  23 if {[prepare_for_testing ${testfile}.exp ${testfile} ${srcfile} {debug f90}]} {
  24     return -1
  25 }
  26
  27 if {![runto [gdb_get_line_number "post_init"]]} then {
  28     perror "couldn't run to breakpoint post_init"
  29     continue
  30 }
  31
  32 # Use inspired by gdb.base/callfuncs.exp.
  33 gdb_test_no_output "set unwindonsignal on"
  34
  35 # Baseline: function and subroutine call with no arguments.
  36 gdb_test "p no_arg()" " = .TRUE."
  37 gdb_test_no_output "call no_arg_subroutine()"
  38
  39 # Argument class: literal, inferior variable, convenience variable,
  40 # function call return value, function.
  41 # Paragraph 3: Variables are passed by reference.
  42 gdb_test "p one_arg(.TRUE.)" " = .TRUE."
  43 gdb_test "p one_arg(untrue)" " = .FALSE."
  44 gdb_test_no_output "set \$var = .FALSE."
  45 gdb_test "p one_arg(\$var)" " = .FALSE."
  46 gdb_test "p one_arg(one_arg(.TRUE.))" " = .TRUE."
  47 gdb_test "p one_arg(one_arg(.FALSE.))" " = .FALSE."
  48 gdb_test_no_output "call run(no_arg_subroutine)"
  49
  50 # Return: constant.
  51 gdb_test "p return_constant()" " = 17"
  52 # Return derived type and call a function in a module.
  53 gdb_test "p derived_types_and_module_calls::build_cart(7,8)" \
  54          " = \\\( x = 7, y = 8 \\\)"
  55
  56 # Two hidden arguments. 1. returned string and 2. string length.
  57 # Paragraph 1.
  58 gdb_test "p return_string(returned_string_debugger, 40)" ""
  59 gdb_test "p returned_string_debugger" "'returned in hidden first argument       '"
  60
  61 # Argument type: real(kind=4), complex, array, pointer, derived type,
  62 # derived type with allocatable, nested derived type.
  63 # Paragraph 4: pointer.
  64 gdb_test "p pointer_function(int_pointer)" " = 87"
  65 # Paragraph 4: array.
  66 gdb_test "call array_function(integer_array)" " = 17"
  67 gdb_test "p derived_types_and_module_calls::pass_cart(c)" \
  68          " = \\\( x = 2, y = 4 \\\)"
  69 # Allocatable elements in a derived type. Technical report ISO/IEC 15581.
  70 gdb_test "p derived_types_and_module_calls::pass_cart_nd(c_nd)" " = 4"
  71 gdb_test "p derived_types_and_module_calls::pass_nested_cart(nested_c)" \
  72           "= \\\( d = \\\( x = 1, y = 2 \\\), z = 3 \\\)"
  73 # Result within some tolerance.
  74 gdb_test "p real4_argument(real4)" " = 3.${decimal}"
  75
  76 # Paragraph 2. Complex argument and return.
  77 gdb_test "p complex_argument(fft)" " = \\\(2.${decimal},3.${decimal}\\\)"
  78
  79 # Function with optional arguments.
  80 # Paragraph 10: Option reference arguments.
  81 gdb_test "p sum_some(1,2,3)" " = 6"
  82
  83 # There is currently no mechanism to call a function without all
  84 # optional parameters present.
  85 setup_kfail "gdb/24147" *-*-*
  86 gdb_test "p sum_some(1,2)" " = 3"
  87
  88 # Paragraph 10: optional value arguments. There is insufficient DWARF
  89 # information to reliably make this case work.
  90 setup_kfail "gdb/24305" *-*-*
  91 gdb_test "p one_arg_value(10)" " = 10"
  92
  93 # DW_AT_artificial formal parameters must be passed manually. This
  94 # assert will fail if the length of the string is wrapped in a pointer.
  95 # Paragraph 7: Character type.
  96 gdb_test "p hidden_string_length('arbitrary string', 16)" " = 16"
  97
  98 # Several arguments.
  99 gdb_test "p several_arguments(2, 3, 5)" " = 10"
 100 gdb_test "p mix_of_scalar_arguments(5, .TRUE., 3.5)" " = 9"
 101
 102 # Calling other functions: Recursive call.
 103 gdb_test "p fibonacci(6)" " = 8"