Home | History | Annotate | Line # | Download | only in gdb.fortran 
      1 # Copyright 2020-2024 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 # Create a slice of an array, then take a slice of that slice.
     17 
     18 require allow_fortran_tests
     19 
     20 standard_testfile ".f90"
     21 load_lib fortran.exp
     22 
     23 if {[prepare_for_testing ${testfile}.exp ${testfile} ${srcfile} \
     24 	 {debug f90}]} {
     25     return -1
     26 }
     27 
     28 if ![fortran_runto_main] {
     29     return -1
     30 }
     31 
     32 # Avoid libc symbols, in particular the 'array' type.
     33 gdb_test_no_output "nosharedlibrary"
     34 
     35 # gdb_breakpoint [gdb_get_line_number "Display Message Breakpoint"]
     36 gdb_breakpoint [gdb_get_line_number "Stop Here"]
     37 gdb_breakpoint [gdb_get_line_number "Final Breakpoint"]
     38 
     39 # We're going to print some reasonably large arrays.
     40 gdb_test_no_output "set print elements unlimited"
     41 
     42 gdb_continue_to_breakpoint "Stop Here"
     43 
     44 # Print a slice, capture the convenience variable name created.
     45 set cmd "print array (1:10:2, 1:10:2)"
     46 gdb_test_multiple $cmd $cmd {
     47     -re "\r\n\\\$(\\d+) = .*\r\n$gdb_prompt $" {
     48 	set varname "\$$expect_out(1,string)"
     49     }
     50 }
     51 
     52 # Now check that we can correctly extract all the elements from this
     53 # slice.
     54 for { set j 1 } { $j < 6 } { incr j } {
     55     for { set i 1 } { $i < 6 } { incr i } {
     56 	set val [expr ((($i - 1) * 2) + (($j - 1) * 20)) + 1]
     57 	gdb_test "print ${varname} ($i,$j)" " = $val"
     58     }
     59 }
     60 
     61 # Now take a slice of the slice.
     62 gdb_test "print ${varname} (3:5, 3:5)" \
     63     " = \\(\\(45, 47, 49\\) \\(65, 67, 69\\) \\(85, 87, 89\\)\\)"
     64 
     65 # Now take a different slice of a slice.
     66 set cmd "print ${varname} (1:5:2, 1:5:2)"
     67 gdb_test_multiple $cmd $cmd {
     68     -re "\r\n\\\$(\\d+) = \\(\\(1, 5, 9\\) \\(41, 45, 49\\) \\(81, 85, 89\\)\\)\r\n$gdb_prompt $" {
     69 	set varname "\$$expect_out(1,string)"
     70 	pass $gdb_test_name
     71     }
     72 }
     73 
     74 # Now take a slice from the slice, of a slice!
     75 set cmd "print ${varname} (1:3:2, 1:3:2)"
     76 gdb_test_multiple $cmd $cmd {
     77     -re "\r\n\\\$(\\d+) = \\(\\(1, 9\\) \\(81, 89\\)\\)\r\n$gdb_prompt $" {
     78 	set varname "\$$expect_out(1,string)"
     79 	pass $gdb_test_name
     80     }
     81 }
     82 
     83 # And again!
     84 set cmd "print ${varname} (1:2:2, 1:2:2)"
     85 gdb_test_multiple $cmd $cmd {
     86     -re "\r\n\\\$(\\d+) = \\(\\(1\\)\\)\r\n$gdb_prompt $" {
     87 	set varname "\$$expect_out(1,string)"
     88 	pass $gdb_test_name
     89     }
     90 }
     91 
     92 # Test taking a slice with stride of a string.  This isn't actually
     93 # supported within gfortran (at least), but naturally drops out of how
     94 # GDB models arrays and strings in a similar way, so we may as well
     95 # test that this is still working.
     96 gdb_test "print str (1:26:2)" " = 'acegikmoqsuwy'"
     97 gdb_test "print str (26:1:-1)" " = 'zyxwvutsrqponmlkjihgfedcba'"
     98 gdb_test "print str (26:1:-2)" " = 'zxvtrpnljhfdb'"
     99 
    100 # Now test the memory requirements of taking a slice from an array.
    101 # The idea is that we shouldn't require more memory to extract a slice
    102 # than the size of the slice.
    103 #
    104 # This will only work if array repacking is turned on, otherwise GDB
    105 # will create the slice by generating a new type that sits over the
    106 # existing value in memory.
    107 gdb_test_no_output "set fortran repack-array-slices on"
    108 set element_size [get_integer_valueof "sizeof (array (1,1))" "unknown"]
    109 set slice_size [expr $element_size * 4]
    110 gdb_test_no_output "set max-value-size $slice_size"
    111 gdb_test "print array (1:2, 1:2)" "= \\(\\(1, 2\\) \\(11, 12\\)\\)"
    112 gdb_test "print array (2:3, 2:3)" "= \\(\\(12, 13\\) \\(22, 23\\)\\)"
    113 gdb_test "print array (2:5:2, 2:5:2)" "= \\(\\(12, 14\\) \\(32, 34\\)\\)"
    114