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      1 # Copyright 2019-2024 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 require allow_fortran_tests
     20 
     21 standard_testfile ".f90"
     22 
     23 if {[prepare_for_testing ${testfile}.exp ${testfile} ${srcfile} {debug f90}]} {
     24     return -1
     25 }
     26 
     27 with_complaints 5 {
     28     set cmd "maint expand-symtabs $srcfile"
     29     set cmd_regexp [string_to_regexp $cmd]
     30     set re_kfail [concat "During symbol reading:" \
     31 		      " unable to find array range"]
     32     gdb_test_multiple $cmd "no complaints in srcfile" {
     33 	-re -wrap "$re_kfail.*" {
     34 	    kfail symtab/27388 $gdb_test_name
     35 	}
     36         -re "^$cmd_regexp\r\n$gdb_prompt $" {
     37 	    pass $gdb_test_name
     38 	}
     39     }
     40 }
     41 
     42 if {![runto [gdb_get_line_number "post_init"]]} {
     43     return
     44 }
     45 
     46 # Use inspired by gdb.base/callfuncs.exp.
     47 gdb_test_no_output "set unwind-on-signal on"
     48 
     49 # Baseline: function and subroutine call with no arguments.
     50 gdb_test "p no_arg()" " = .TRUE."
     51 gdb_test_no_output "call no_arg_subroutine()"
     52 
     53 # Argument class: literal, inferior variable, convenience variable,
     54 # function call return value, function.
     55 # Paragraph 3: Variables are passed by reference.
     56 gdb_test "p one_arg(.TRUE.)" " = .TRUE."
     57 gdb_test "p one_arg(untrue)" " = .FALSE."
     58 gdb_test_no_output "set \$var = .FALSE."
     59 gdb_test "p one_arg(\$var)" " = .FALSE."
     60 gdb_test "p one_arg(one_arg(.TRUE.))" " = .TRUE."
     61 gdb_test "p one_arg(one_arg(.FALSE.))" " = .FALSE."
     62 gdb_test_no_output "call run(no_arg_subroutine)"
     63 
     64 # Return: constant.
     65 gdb_test "p return_constant()" " = 17"
     66 # Return derived type and call a function in a module.
     67 gdb_test "p derived_types_and_module_calls::build_cart(7,8)" \
     68 	 " = \\\( x = 7, y = 8 \\\)"
     69 
     70 # Two hidden arguments. 1. returned string and 2. string length.
     71 # Paragraph 1.
     72 gdb_test "p return_string(returned_string_debugger, 40)" ""
     73 gdb_test "p returned_string_debugger" "'returned in hidden first argument       '"
     74 
     75 # Argument type: real(kind=4), complex, array, pointer, derived type,
     76 # derived type with allocatable, nested derived type.
     77 # Paragraph 4: pointer.
     78 gdb_test "p pointer_function(int_pointer)" " = 87"
     79 # Paragraph 4: array.
     80 gdb_test "call array_function(integer_array)" " = 17"
     81 gdb_test "p derived_types_and_module_calls::pass_cart(c)" \
     82 	 " = \\\( x = 2, y = 4 \\\)"
     83 # Allocatable elements in a derived type. Technical report ISO/IEC 15581.
     84 gdb_test "p derived_types_and_module_calls::pass_cart_nd(c_nd)" " = 4"
     85 gdb_test "p derived_types_and_module_calls::pass_nested_cart(nested_c)" \
     86 	  "= \\\( d = \\\( x = 1, y = 2 \\\), z = 3 \\\)"
     87 # Result within some tolerance.
     88 gdb_test "p real4_argument(real4)" " = 3.${decimal}"
     89 
     90 # Paragraph 2. Complex argument and return.
     91 gdb_test "p complex_argument(fft)" " = \\\(2.${decimal},3.${decimal}\\\)"
     92 
     93 # Function with optional arguments.
     94 # Paragraph 10: Option reference arguments.
     95 gdb_test "p sum_some(1,2,3)" " = 6"
     96 
     97 # There is currently no mechanism to call a function without all
     98 # optional parameters present.
     99 setup_kfail "gdb/24147" *-*-*
    100 gdb_test "p sum_some(1,2)" " = 3"
    101 
    102 # Paragraph 10: optional value arguments. There is insufficient DWARF
    103 # information to reliably make this case work.
    104 if { [test_compiler_info {gfortran-*} f90] } {
    105     setup_kfail "gdb/24305" *-*-*
    106 }
    107 gdb_test "p one_arg_value(10)" " = 10"
    108 
    109 # DW_AT_artificial formal parameters must be passed manually. This
    110 # assert will fail if the length of the string is wrapped in a pointer.
    111 # Paragraph 7: Character type.
    112 gdb_test "p hidden_string_length('arbitrary string', 16)" " = 16"
    113 
    114 # Several arguments.
    115 gdb_test "p several_arguments(2, 3, 5)" " = 10"
    116 gdb_test "p mix_of_scalar_arguments(5, .TRUE., 3.5)" " = 9"
    117 
    118 # Calling other functions: Recursive call.
    119 gdb_test "p fibonacci(6)" " = 8"
    120