gdb/testsuite/gdb.fortran/short-circuit-argument-list.exp

   1 # Copyright 2018-2024 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 # Test evaluating logical expressions that contain array references, function
  17 # calls and substring operations that are to be skipped due to short
  18 # circuiting.
  19
  20 require allow_fortran_tests
  21
  22 standard_testfile ".f90"
  23
  24 if {[prepare_for_testing ${testfile}.exp ${testfile} ${srcfile} {debug f90}]} {
  25     return -1
  26 }
  27
  28 if {![runto [gdb_get_line_number "post_truth_table_init"]]} {
  29     return
  30 }
  31
  32 # Non-zero value to use as the function call count base. Using zero is avoided
  33 # as this is a common value in memory.
  34 set prime 17
  35
  36 # Reset all call counts to the initial value ($prime).
  37 proc reset_called_flags { } {
  38     global prime
  39     foreach counter {no_arg no_arg_false one_arg two_arg array} {
  40         gdb_test_no_output "set var calls%function_${counter}_called=$prime"
  41     }
  42 }
  43
  44 reset_called_flags
  45
  46 # Vary conditional and input over the standard truth table.
  47 # Test that the debugger can evaluate expressions of the form
  48 # a(x,y) .OR./.AND. a(a,b) correctly.
  49 foreach_with_prefix truth_table_index {1 2 3 4} {
  50     gdb_test "p truth_table($truth_table_index, 1) .OR. truth_table($truth_table_index, 2)" \
  51              "[expr $truth_table_index > 1 ? \".TRUE.\" : \".FALSE.\"]"
  52 }
  53
  54 foreach_with_prefix truth_table_index {1 2 3 4} {
  55     gdb_test "p truth_table($truth_table_index, 1) .AND. truth_table($truth_table_index, 2)" \
  56              "[expr $truth_table_index > 3 ? \".TRUE.\" : \".FALSE.\"]"
  57 }
  58
  59 # Vary number of function arguments to skip.
  60 set argument_list ""
  61 foreach_with_prefix arg {"No" "One" "Two"} {
  62     set trimmed_args [string trimright $argument_list ,]
  63     set arg_lower [string tolower $arg]
  64     gdb_test "p function_no_arg_false() .OR. function_${arg_lower}_arg($trimmed_args)" \
  65              " = .TRUE."
  66     reset_called_flags
  67     gdb_test "p .TRUE. .OR. function_${arg_lower}_arg($trimmed_args)" \
  68              " = .TRUE."
  69     # Check that none of the short-circuited functions have been called.
  70     gdb_test "p calls" \
  71              " = \\\( function_no_arg_called = $prime, function_no_arg_false_called = $prime, function_one_arg_called = $prime, function_two_arg_called = $prime, function_array_called = $prime \\\)"
  72     append argument_list " .TRUE.,"
  73 }
  74
  75 with_test_prefix "nested call not skipped" {
  76     reset_called_flags
  77     # Check nested calls
  78     gdb_test "p function_one_arg(.FALSE. .OR. function_no_arg())" \
  79              " = .TRUE."
  80     gdb_test "p calls" \
  81              " = \\\( function_no_arg_called = [expr $prime + 1], function_no_arg_false_called = $prime, function_one_arg_called = [expr $prime + 1], function_two_arg_called = $prime, function_array_called = $prime \\\)"
  82 }
  83
  84 with_test_prefix "nested call skipped" {
  85     gdb_test "p function_one_arg(.TRUE. .OR. function_no_arg())" \
  86              " = .TRUE."
  87     gdb_test "p calls" \
  88              " = \\\( function_no_arg_called = [expr $prime + 1], function_no_arg_false_called = $prime, function_one_arg_called = [expr $prime + 2], function_two_arg_called = $prime, function_array_called = $prime \\\)"
  89 }
  90
  91 # Vary number of components in the expression to skip.
  92 set expression "p .TRUE."
  93 foreach_with_prefix expression_components {1 2 3 4} {
  94     set expression "$expression .OR. function_one_arg(.TRUE.)"
  95     gdb_test "$expression" \
  96              " = .TRUE."
  97 }
  98
  99 # Check parsing skipped substring operations.
 100 gdb_test "p .TRUE. .OR. binary_string(1)" " = .TRUE."
 101
 102 # Check parsing skipped substring operations with ranges. These should all
 103 # return true as the result is > 0.
 104 # The second binary_string access is important as an incorrect pos update
 105 # will not be picked up by a single access.
 106 foreach_with_prefix range1 {"1:2" ":" ":2" "1:"} {
 107     foreach_with_prefix range2 {"1:2" ":" ":2" "1:"} {
 108         gdb_test "p .TRUE. .OR. binary_string($range1) .OR. binary_string($range2)" \
 109                  " = .TRUE."
 110     }
 111 }
 112
 113 # Skip multi-dimensional arrays with ranges.
 114 foreach_with_prefix range1 {"1:2" ":" ":2" "1:"} {
 115     foreach_with_prefix range2 {"1:2" ":" ":2" "1:"} {
 116         gdb_test "p .TRUE. .OR. binary_string($range1) .OR. truth_table($range2, 1)" \
 117                  " = .TRUE."
 118     }
 119 }
 120
 121 # Check evaluation of substring operations in logical expressions.
 122 gdb_test "p .FALSE. .OR. binary_string(1)" " = .FALSE."
 123
 124 with_test_prefix "binary string skip" {
 125     reset_called_flags
 126     # Function call and substring skip.
 127     gdb_test "p .TRUE. .OR. function_one_arg(binary_string(1))" \
 128              " = .TRUE."
 129     gdb_test "p calls%function_one_arg_called" " = $prime"
 130 }
 131
 132 with_test_prefix "array skip" {
 133     # Function call and array skip.
 134     reset_called_flags
 135     gdb_test "p .TRUE. .OR. function_array(binary_string)" \
 136              " = .TRUE."
 137     gdb_test "p calls%function_array_called" " = $prime"
 138 }