gdb/testsuite/gdb.cp/method-ref-return.exp

# Copyright 2025 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/>.

# Test calling methods and accessing members via reference.

require allow_cplus_tests

standard_testfile .cc

if {[prepare_for_testing "failed to prepare" $testfile $srcfile {debug c++}]} {
    return -1
}

if {![runto_main]} {
    return -1
}

# Set a breakpoint after the bar object is created and the reference is obtained.
gdb_breakpoint [gdb_get_line_number "breakpoint here"]
gdb_continue_to_breakpoint "after reference assignment"

# Test that we can call the method through reference and get the expected result.
gdb_test_multiple "print b.get_foo()" "print method call returning reference" {
    -re "\\$\[0-9\]+ = \\(const foo &\\) @$hex: \\{m_a = 42\\}\r\n$gdb_prompt $" {
	pass $gdb_test_name
    }
    -re "Could not validate memory tag: Value can't be converted to integer\\." {
	fail "$gdb_test_name"
    }
}

# Test accessing the member through the reference.
gdb_test "print b.get_foo ().m_a" \
    "\\$\[0-9\]+ = 42" \
    "print member access through reference"

# Test calling method on the referenced object.
gdb_test "print b.get_foo ().get_a()" \
    "\\$\[0-9\]+ = 42" \
    "print method call on referenced object"

# Test that the stored reference works correctly.
gdb_test_multiple "print ref" "print stored reference" {
    -re "\\$\[0-9\]+ = \\(const foo &\\) @$hex: \\{m_a = 42\\}\r\n$gdb_prompt $" {
	pass $gdb_test_name
    }
    -re "Could not validate memory tag: Value can't be converted to integer\\." {
	fail "$gdb_test_name"
    }
}

gdb_test "print ref.m_a" \
    "\\$\[0-9\]+ = 42" \
    "print member through stored reference"

gdb_test "print ref.get_a()" \
    "\\$\[0-9\]+ = 42" \
    "print method call through stored reference"