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
66 lines
1.9 KiB
Plaintext
66 lines
1.9 KiB
Plaintext
# Copyright (C) 2019-2025 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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# Test following a vfork child that execs, when the vfork parent is a
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# threaded program, and it's a non-main thread that vforks.
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require allow_fork_tests
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standard_testfile
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if {[build_executable "failed to prepare" $testfile $srcfile {debug pthreads}]} {
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return -1
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}
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# DETACH indicates whether "set detach-on-fork" is enabled. It is
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# either "on" or "off".
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proc test_vfork {detach} {
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global binfile
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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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delete_breakpoints
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gdb_test_no_output "set follow-fork-mode child"
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gdb_test_no_output "set detach-on-fork $detach"
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if {$detach == "off"} {
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gdb_test "continue" \
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[multi_line \
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"Attaching after .* vfork to child .*" \
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".*New inferior 2 .*" \
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".* is executing new program: .*" \
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".*Inferior 2 .* exited normally.*"]
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} else {
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gdb_test "continue" \
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[multi_line \
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"Attaching after .* vfork to child .*" \
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".*New inferior 2 .*" \
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".*Detaching vfork parent process .* after child exec.*" \
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".*Inferior 1 .* detached.*" \
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".*is executing new program: .*" \
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".*Inferior 2 .*exited normally.*"]
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}
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}
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foreach_with_prefix detach-on-fork {"off" "on"} {
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test_vfork ${detach-on-fork}
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}
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