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4a94e36819
This commit brings all the changes made by running gdb/copyright.py as per GDB's Start of New Year Procedure. For the avoidance of doubt, all changes in this commits were performed by the script.
94 lines
2.9 KiB
Plaintext
94 lines
2.9 KiB
Plaintext
# Copyright 2018-2022 Free Software Foundation, Inc.
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# This program is free software; you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation; either version 3 of the License, or
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# (at your option) any later version.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with this program. If not, see <http://www.gnu.org/licenses/>.
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# This testcase is a regression test for a regression in the in-line
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# step-over machinery. If a resumption that starts a step-over
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# failed, a following resumption would make GDB hang forever:
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#
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# (gdb) b *0
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# Breakpoint 2 at 0x0
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# continue
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# Continuing.
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# Warning:
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# Cannot insert breakpoint 2.
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# Cannot access memory at address 0x0
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#
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# Command aborted.
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# delete breakpoints
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# Delete all breakpoints? (y or n) y
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# (gdb) b function
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# Breakpoint 3 at 0x40048b: file test.c, line 33.
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# continue
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# Continuing.
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# *GDB hangs forever*
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standard_testfile
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if {[build_executable "failed to prepare" $testfile $srcfile debug]} {
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return -1
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}
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# DISPLACED indicates whether to use displaced-stepping.
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proc do_test {displaced breakpoint_always_inserted} {
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global gdb_prompt decimal
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global srcfile binfile
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clean_restart $binfile
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gdb_test_no_output "set displaced-stepping $displaced"
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gdb_test_no_output "set breakpoint always-inserted $breakpoint_always_inserted"
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if ![runto_main] {
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return -1
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}
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# We rely on not being able to set a breakpoint at 0, as proxy for
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# any kind of breakpoint insertion failure. If we can examine
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# what's at memory address 0, it is possible that we could also
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# execute it.
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if [is_address_zero_readable] {
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untested "memory at address 0 is possibly executable"
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return
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}
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# Set a breakpoint that fails to insert.
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if { $breakpoint_always_inserted == "on" } {
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gdb_test "b *0" "Breakpoint $decimal at 0x0.*"
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} else {
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gdb_test "b *0" "Breakpoint $decimal at 0x0"
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}
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gdb_test "continue" \
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"Command aborted\\." \
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"continue aborts"
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# Delete the "bad" breakpoint and try continuing again.
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delete_breakpoints
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gdb_test "b function" "Breakpoint $decimal .*$srcfile.*"
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gdb_test "continue" \
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"Breakpoint $decimal, function \\(\\) at .*$srcfile:.*" \
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"continue to function"
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}
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# This testcase exercises a regression with the in-line step-over
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# machinery. So make sure this runs with displaced stepping disabled,
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# and for good measure, also try with displaced stepping enabled.
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foreach_with_prefix displaced-stepping {"off" "on"} {
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foreach_with_prefix breakpoint-always-inserted {"off" "on"} {
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do_test ${displaced-stepping} ${breakpoint-always-inserted}
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}
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}
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