forked from Imagelibrary/binutils-gdb
d8b79a1f24
Cygwin debugging does not support follow fork. There is currently no
interface between the debugger and the Cygwin runtime to be able to
intercept forks and execs. Consequently, testcases that try to
exercise fork/exec all FAIL, and several hit long cascading timeouts.
Add a new allow_fork_tests procedure, meant be be used with require,
and sprinkle it throughout testcases that exercise fork.
Note that some tests currently are skipped on targets other than
Linux, with something like:
# Until "set follow-fork-mode" and "catch vfork" are implemented on
# other targets...
#
if {![istarget "*-linux*"]} {
continue
}
However, some BSD ports also support fork debugging nowadays, and the
testcases were never adjusted... That is why the new allow_fork_tests
procedure doesn't look for linux.
With this patch, on Cygwin, I get this:
$ make check TESTS="*/*fork*.exp"
...
=== gdb Summary ===
# of expected passes 6
# of untested testcases 1
# of unsupported tests 31
Change-Id: I0c5e8c574d1f61b28d370c22a0b0b6bc3efaf978
108 lines
3.2 KiB
Plaintext
108 lines
3.2 KiB
Plaintext
# Copyright (C) 2009-2025 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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require allow_fork_tests
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standard_testfile
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if {[gdb_compile_pthreads "${srcdir}/${subdir}/${srcfile}" "${binfile}" executable {debug}] != "" } {
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return -1
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}
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clean_restart ${binfile}
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if {![runto_main]} {
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return 0
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}
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gdb_test_no_output "set follow-fork-mode child" "1, set follow-fork-mode child"
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gdb_test "catch fork" "Catchpoint \[0-9\]* \\(fork\\)" "1, insert fork catchpoint"
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gdb_breakpoint "start" "" "1, set breakpoint at start"
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gdb_test "continue" "Catchpoint.*" "1, get to the fork event"
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gdb_test "info threads" " ${tdlabel_re} .* ${tdlabel_re} .* ${tdlabel_re} .* ${tdlabel_re} .*" "1, multiple threads found"
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gdb_test "thread 1" ".*" "1, switched away from event thread"
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gdb_test "continue" "Not resuming.*" "1, refused to resume"
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set test "1, followed to the child, found one thread"
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gdb_test_multiple "info threads" "metest" {
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-re " ${tdlabel_re} .* ${tdlabel_re} .*$gdb_prompt $" {
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fail "$test"
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}
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-re " ${tdlabel_re} .*$gdb_prompt $" {
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pass "$test"
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}
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-re "$gdb_prompt $" {
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fail "$test (unknown output)"
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}
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timeout {
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fail "$test (timeout)"
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}
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}
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gdb_test "continue" "Breakpoint 3, start.*" "1, get to the spawned thread in fork child"
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set test "1, followed to the child, found two threads"
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gdb_test_multiple "info threads" "$test" {
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-re " ${tdlabel_re} .* ${tdlabel_re} .* ${tdlabel_re} .*$gdb_prompt $" {
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fail "$test"
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}
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-re " ${tdlabel_re} .* ${tdlabel_re} .*$gdb_prompt $" {
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pass "$test"
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}
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-re "$gdb_prompt $" {
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fail "$test (unknown output)"
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}
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timeout {
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fail "$test (timeout)"
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}
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}
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# Start over, but this time, don't switch away from the fork event thread.
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clean_restart $binfile
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if {![runto_main]} {
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return 0
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}
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gdb_test_no_output "set follow-fork-mode child" "2, set follow-fork-mode child"
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gdb_test "catch fork" "Catchpoint \[0-9\]* \\(fork\\)" "2, insert fork catchpoint"
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gdb_breakpoint "start"
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gdb_test "continue" "Catchpoint.*" "2, get to the fork event"
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gdb_test "info threads" " ${tdlabel_re} .* ${tdlabel_re} .* ${tdlabel_re} .* ${tdlabel_re} .*" "2, multiple threads found"
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gdb_test "continue" "Breakpoint 3, start.*" "2, get to the spawned thread in fork child"
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set test "2, followed to the child, found two threads"
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gdb_test_multiple "info threads" "$test" {
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-re " ${tdlabel_re} .* ${tdlabel_re} .* ${tdlabel_re} .*$gdb_prompt $" {
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fail "$test"
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}
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-re " ${tdlabel_re} .* ${tdlabel_re} .*$gdb_prompt $" {
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pass "$test"
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}
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-re "$gdb_prompt $" {
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fail "$test (unknown output)"
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}
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timeout {
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fail "$test (timeout)"
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}
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}
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