gdb/testsuite/gdb.base/advance-until-multiple-locations.exp

# Copyright 2020-2021 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/>.  */

# Test 'advance/until LINESPEC' where LINESPEC expands to multiple
# locations.

standard_testfile .cc

if { [skip_cplus_tests] } { continue }

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

set lineno [gdb_get_line_number "multiple locations here"]

# advance/until to an inlined line number, which has been inlined
# multiple times, when the program is stopped at the same inlined
# function.
proc_with_prefix until_advance_lineno_from_inlined {cmd} {
    global lineno

    if ![runto test] {
	return
    }

    gdb_breakpoint $lineno
    gdb_continue_to_breakpoint "break here"

    set lineno2 [expr $lineno + 1]

    gdb_test "$cmd $lineno2" \
	"inline_func .* at .*:$lineno2.*return i.*" \
	"$cmd line number"
}

# advance/until to a line number, which has been inlined multiple
# times, when the program is stopped at a non-inlined function.

proc_with_prefix until_advance_lineno_from_non_inlined {cmd} {
    global lineno

    if ![runto test] {
	return
    }

    gdb_test "$cmd $lineno" \
	"inline_func .* at .*:$lineno.*multiple locations here.*" \
	"$cmd line number"
}

# Test advancing to an inlined function, which has been inlined
# multiple times.

proc_with_prefix until_advance_inline_func {cmd} {
    global lineno

    if ![runto test] {
	return
    }

    gdb_test "$cmd inline_func" \
	"inline_func .* at .*:$lineno.*multiple locations here.*"
}

# Test advancing to an overloaded function, which is another form of a
# linespec expanding to multiple locations.  GDB will stop at the
# first overload called.

proc_with_prefix advance_overload {} {
    global lineno

    if ![runto test] {
	return
    }

    # Test that advance stops at the first overload called by the
    # program.

    gdb_test "advance ovld_func" \
	"ovld_func .* at .*global = 1.*" \
	"first advance stops at ovld_func()"

    # Now test that advance also stops at the other overload called by
    # the program.

    # Need to issue the advance twice, because advance also stops upon
    # exit from the current stack frame.
    gdb_test "advance ovld_func" \
	"test \\(\\) at .*" \
	"second advance stops at caller"

    gdb_test "advance ovld_func" \
	"ovld_func .* at .*global = 2.*" \
	"third advance stops at ovld_func(int)"
}

# Test "until" to an overloaded function, which is another form of a
# linespec expanding to multiple locations.  Unlike "advance", "until"
# only stops if still in the same frame.  Since the overloaded
# function is a different frame, the program should stop at the caller
# frame instead.

proc_with_prefix until_overload {} {
    global lineno

    if ![runto test] {
	return
    }

    # ovld_func is a different frame, so it shouldn't cause a stop.
    # Instead, the program should stop at the caller frame.
    gdb_test "until ovld_func" \
	"main \\(\\) at .*"
}

foreach_with_prefix cmd {"until" "advance"} {
    until_advance_lineno_from_inlined $cmd
    until_advance_lineno_from_non_inlined $cmd
    until_advance_inline_func $cmd
}

advance_overload
until_overload