testsuite/gdb.base/condbreak-bad.exp

# Copyright 2020 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.
#
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# along with this program.  If not, see <http://www.gnu.org/licenses/>.

# Test defining bad conditions for breakpoints.

standard_testfile

if {[prepare_for_testing "failed to prepare" ${binfile} ${srcfile}]} {
    return
}

set bp_location [gdb_get_line_number "break-here"]
gdb_breakpoint "$bp_location"
set bpnum [get_integer_valueof "\$bpnum" 0 "get bpnum"]

# Define a 'bad' condition.  The breakpoint should stay unconditional.
gdb_test "cond $bpnum gibberish" \
    "No symbol \"gibberish\" in current context." \
    "attempt a bad condition"

set fill "\[^\r\n\]*"

gdb_test "info break" \
    [multi_line \
	 "Num${fill}What" \
	 "${decimal}${fill}breakpoint${fill}keep y${fill}:${bp_location}"] \
    "breakpoint is unconditional"

# Now define a valid condition.  Attempt to override that with a 'bad'
# condition again.  The condition should be preserved.
with_test_prefix "with run" {
    gdb_test_no_output "cond $bpnum a == 10"

    gdb_test "cond $bpnum gibberish" \
	"No symbol \"gibberish\" in current context." \
	"attempt a bad condition"

    gdb_test "info break" \
	[multi_line \
	     "Num${fill}What" \
	     "${decimal}${fill}breakpoint${fill}keep y${fill}:${bp_location}" \
	     "${fill}stop only if a == 10${fill}"] \
	"breakpoint condition is preserved"

    # Run the code.  We should hit the breakpoint, because the
    # condition evaluates to true.

    gdb_run_cmd
    gdb_test "" ".*reakpoint .*, main .*${srcfile}.*" "run to the bp"
}

# Restart.  Repeat the test above after the program has started.
# This is needed to check a scenario where the breakpoints are no
# longer re-inserted due to solib events.  Note that runto_main
# deletes the breakpoints.
with_test_prefix "with continue 1" {
    if {![runto_main]} {
	fail "could not run to main"
	return -1
    }

    gdb_breakpoint "$bp_location"
    set bpnum [get_integer_valueof "\$bpnum" 0 "get bpnum"]

    gdb_test_no_output "cond $bpnum a == 10"

    gdb_test "cond $bpnum gibberish" \
	"No symbol \"gibberish\" in current context." \
	"attempt a bad condition"

    # Resume.  We should hit the breakpoint, because the
    # condition evaluates to true.
    gdb_continue_to_breakpoint "${srcfile}:${bp_location}"
}

# Repeat with a condition that evaluates to false.
with_test_prefix "with continue 2" {
    if {![runto_main]} {
	fail "could not run to main"
	return -1
    }

    gdb_breakpoint "$bp_location"
    set bpnum [get_integer_valueof "\$bpnum" 0 "get bpnum"]

    gdb_test_no_output "cond $bpnum a == 999"

    gdb_test "cond $bpnum gibberish" \
	"No symbol \"gibberish\" in current context." \
	"attempt a bad condition"

    # Resume.  We should *not* hit the breakpoint, because the
    # condition evaluates to false.
    gdb_continue_to_end
}

# Repeat with a condition that contains junk at the end.
with_test_prefix "with junk" {
    if {![runto_main]} {
	fail "could not run to main"
	return -1
    }

    gdb_breakpoint "$bp_location"
    set bpnum [get_integer_valueof "\$bpnum" 0 "get bpnum"]

    gdb_test_no_output "cond $bpnum a == 999"

    gdb_test "cond $bpnum a == 10 if" \
	"Junk at end of expression" \
	"attempt a bad condition"

    # Resume.  We should *not* hit the breakpoint, because the
    # condition evaluates to false.
    gdb_continue_to_end
}