gdb/testsuite/gdb.ada/funcall_ref.exp

# Copyright 2008-2021 Free Software Foundation, Inc.
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 3 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program.  If not, see <http://www.gnu.org/licenses/>.

load_lib "ada.exp"

if { [skip_ada_tests] } { return -1 }

standard_ada_testfile foo

# Note we don't test the "none" (no -fgnat-encodings option) scenario
# here, because "all" and "minimal" cover the cases, and this way we
# don't have to update the test when gnat changes its default.
foreach_with_prefix scenario {all minimal} {
    set flags [list debug additional_flags=-fgnat-encodings=$scenario]

    if {[gdb_compile_ada "${srcfile}" "${binfile}" executable $flags] != ""} {
	return -1
    }

    clean_restart ${testfile}

    set bp_location [gdb_get_line_number "STOP" ${testdir}/foo.adb]
    runto "foo.adb:$bp_location"

    # Test printing and type-printing of a discriminated record that a function
    # returns by reference.

    # Currently, GCC describes such functions as returning pointers (instead of
    # references).
    set pass_re [multi_line "type = <ref> record" \
		     "    n: natural;" \
		     "    s: array \\(1 \\.\\. n\\) of character;" \
		     "end record"]
    # With DWARF we get debuginfo that could in theory show "1..n" for
    # the range:
    #     <3><1230>: Abbrev Number: 15 (DW_TAG_member)
    #     <1231>   DW_AT_name        : n
    # ...
    #  <4><1257>: Abbrev Number: 18 (DW_TAG_subrange_type)
    #     <1258>   DW_AT_type        : <0x126e>
    #     <125c>   DW_AT_upper_bound : <0x1230>
    # However, we don't currently record the needed information in the
    # location batons.  In the meantime, we accept and kfail the
    # compromise output.
    set dwarf_kfail_re [multi_line "type = <ref> record" \
			    "    n: natural;" \
			    "    s: array \\(<>\\) of character;" \
			    "end record"]
    set unsupported_re [multi_line "type = access record" \
			    "    n: natural;" \
			    "    s: access array \\(1 \\.\\. n\\) of character;" \
			    "end record"]
    set supported 1
    gdb_test_multiple "ptype get(\"Hello world!\")" "" {
	-re -wrap $pass_re {
	    pass $gdb_test_name
	}
	-re -wrap $dwarf_kfail_re {
	    if {$scenario == "minimal"} {
		setup_kfail "symbolic names in location batons" *-*-*
	    }
	    fail $gdb_test_name
	    set supported 0
	}
	-re -wrap $unsupported_re {
	    unsupported $gdb_test_name
	    set supported 0
	}
    }

    if { $supported == 0 } {
	return 0
    }

    gdb_test "p get(\"Hello world!\")" \
	"= \\(n => 12, s => \"Hello world!\"\\)"
}