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# Copyright 2014-2019 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/>.
#
# Regression test for a bug where GDB would internal error if a thread
# runs into a breakpoint that needs stepping over, just after stepping
# over another breakpoint, without a user visible stop in between.
#
standard_testfile
if {[prepare_for_testing "failed to prepare" $testfile $srcfile debug]} {
return -1
}
if ![runto_main] then {
fail "can't run to main"
return 0
}
# Make sure the target doesn't hide the breakpoint hits (that don't
# cause a user visible stop) from GDB.
gdb_test_no_output "set breakpoint condition-evaluation host"
set up_to_nl "\[^\r\n\]+\[\r\n\]+"
# Number of consecutive breakpoints in a row to try.
set n_insns 3
# Extract addresses of a few consecutive instructions.
set test "get breakpoint addresses"
if { [gdb_test_multiple "x /[expr $n_insns + 1]i \$pc" $test {
-re "=> $hex${up_to_nl} ($hex)${up_to_nl} ($hex)${up_to_nl} ($hex)${up_to_nl}$gdb_prompt $" {
for {set i 1} {$i <= $n_insns} {incr i} {
set bp_addrs($i) $expect_out($i,string)
}
pass $test
}
}] != 0 } {
# No use proceeding if bp_addrs wasn't set.
return
}
for {set i 1} {$i <= $n_insns} {incr i} {
with_test_prefix "insn $i" {
gdb_test "break \*$bp_addrs($i)" \
"Breakpoint $decimal at $bp_addrs($i): file .*" \
"set breakpoint"
# Give the breakpoint a condition that always fails, so that
# the thread is immediately re-resumed.
gdb_test_no_output "condition \$bpnum condition" \
"set condition"
}
}
set lineno [gdb_get_line_number "break here"]
gdb_breakpoint $lineno
gdb_continue_to_breakpoint "break here" ".*break here.*"
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