From: Guinevere Larsen <blarsen@redhat.com>
To: gdb-patches@sourceware.org
Cc: Andrew Burgess <aburgess@redhat.com>,
Luis Machado <luis.machado@arm.com>
Subject: [PINGv2] [PATCH v4] gdb/testsuite: add test for backtracing for threaded inferiors from a corefile
Date: Tue, 2 Jan 2024 11:41:08 +0100 [thread overview]
Message-ID: <223d389d-5d1d-4420-8bec-bafa4017c9a8@redhat.com> (raw)
In-Reply-To: <7ff2cd49-6374-6f7c-53eb-db07bf724a1e@redhat.com>
Ping!
On 20/12/2023 10:40, Guinevere Larsen wrote:
> Ping!
>
> --
> Cheers,
> Guinevere Larsen
> She/Her/Hers
>
> On 04/12/2023 18:33, Guinevere Larsen wrote:
>> This patch is based on an out-of-tree patch that fedora has been
>> carrying for a while. It tests if GDB is able to properly unwind a
>> threaded program in the following situations:
>> * regular threads
>> * in a signal handler
>> * in a signal handler executing on an alternate stack
>>
>> And the final frame can either be in a syscall or in an infinite loop.
>>
>> The test works by running the inferior until a crash to generate a
>> corefile, or until right before the crash. Then applies a backtrace to
>> all threads to see if any frame can't be identified, and the order of
>> the threads in GDB. Finally, it goes thread by thread and tries to
>> collect a large part of the backtrace, to confirm that everything is
>> being unwound correctly.
>>
>> Co-Authored-By: Andrew Burgess <aburgess@redhat.com>
>> Reviewed-By: Luis Machado <luis.machado@arm.com>
>>
>> ---
>>
>> Changes for v4:
>> * Luis mentioned that my strategy for starting the inferior didn't work
>> with native-extended testing. Changed to use runto_main instead
>> * Improved comments in the exp file based on Andrew's comments
>> * Minor cleanups with regards to TCL usage
>> ---
>> gdb/testsuite/gdb.threads/threadcrash.c | 443 ++++++++++++++++++++++
>> gdb/testsuite/gdb.threads/threadcrash.exp | 233 ++++++++++++
>> 2 files changed, 676 insertions(+)
>> create mode 100644 gdb/testsuite/gdb.threads/threadcrash.c
>> create mode 100644 gdb/testsuite/gdb.threads/threadcrash.exp
>>
>> diff --git a/gdb/testsuite/gdb.threads/threadcrash.c
>> b/gdb/testsuite/gdb.threads/threadcrash.c
>> new file mode 100644
>> index 00000000000..e476ae7b07d
>> --- /dev/null
>> +++ b/gdb/testsuite/gdb.threads/threadcrash.c
>> @@ -0,0 +1,443 @@
>> +/* This testcase is part of GDB, the GNU debugger.
>> +
>> + Copyright 2023 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/>. */
>> +
>> +#include <pthread.h>
>> +#include <assert.h>
>> +#include <stdlib.h>
>> +#include <signal.h>
>> +#include <unistd.h>
>> +
>> +/* The delay that the main thread gives once all the worker threads
>> have
>> + reached the barrier before the main thread enters the function on
>> which
>> + GDB will have placed a breakpoint. */
>> +
>> +#define MAIN_THREAD_DELAY 2
>> +
>> +/* The maximum time we allow this test program to run for before an
>> alarm
>> + signal is sent and everything will exit. */
>> +#define WATCHDOG_ALARM_TIME 600
>> +
>> +/* Aliases for the signals used within this script. Each signal
>> + corresponds to an action (from the FINAL_ACTION enum) that the
>> signal
>> + handler will perform. */
>> +
>> +#define SPIN_SIGNAL SIGUSR1
>> +#define SYSCALL_SIGNAL SIGUSR2
>> +
>> +/* Describe the final action that a thread should perform. */
>> +
>> +enum final_action
>> + {
>> + /* Thread should spin in an infinite loop. */
>> + SPIN = 0,
>> +
>> + /* Thread should block in a syscall. */
>> + SYSCALL,
>> +
>> + /* This is just a marker to allow for looping over the enum. */
>> + LAST_ACTION
>> + };
>> +
>> +/* Where should the thread perform this action? */
>> +
>> +enum exec_location
>> + {
>> + /* Just a normal thread, on a normal stack. */
>> + NORMAL = 0,
>> +
>> + /* In a signal handler, but use the normal stack. */
>> + SIGNAL_HANDLER,
>> +
>> + /* In a signal handler using an alternative stack. */
>> + SIGNAL_ALT_STACK,
>> +
>> + /* This is just a marker to allow for looping over the enum. */
>> + LAST_LOCACTION
>> + };
>> +
>> +/* A descriptor for a single thread job. We create a new thread for
>> each
>> + job_description. */
>> +
>> +struct job_description
>> +{
>> + /* What action should this thread perform. */
>> + enum final_action action;
>> +
>> + /* Where should the thread perform the action. */
>> + enum exec_location location;
>> +
>> + /* The actual thread handle, so we can join with the thread. */
>> + pthread_t thread;
>> +};
>> +
>> +/* A pthread barrier, used to (try) and synchronise the threads. */
>> +pthread_barrier_t global_barrier;
>> +
>> +/* Return a list of jobs, and place the length of the list in
>> *COUNT. */
>> +
>> +struct job_description *
>> +get_job_list (int *count)
>> +{
>> + /* The number of jobs. */
>> + int num = LAST_ACTION * LAST_LOCACTION;
>> +
>> + /* The uninitialised array of jobs. */
>> + struct job_description *list
>> + = malloc (num * sizeof (struct job_description));
>> + assert (list != NULL);
>> +
>> + /* Fill the array with all possible jobs. */
>> + for (int i = 0; i < (int) LAST_ACTION; ++i)
>> + for (int j = 0; j < (int) LAST_LOCACTION; ++j)
>> + {
>> + int idx = (i * LAST_LOCACTION) + j;
>> + list[idx].action = (enum final_action) i;
>> + list[idx].location = (enum exec_location) j;
>> + }
>> +
>> + /* Return the array of jobs. */
>> + *count = num;
>> + return list;
>> +}
>> +
>> +/* This function should never be called. If it is then an assertion
>> will
>> + trigger. */
>> +
>> +void
>> +assert_not_reached (void)
>> +{
>> + assert (0);
>> +}
>> +
>> +/* The function for a SPIN action. Just spins in a loop. The LOCATION
>> + argument exists so GDB can identify the expected context for this
>> + function. */
>> +
>> +void
>> +do_spin_task (enum exec_location location)
>> +{
>> + (void) location;
>> +
>> + /* Let everyone know that we're about to perform our action. */
>> + int res = pthread_barrier_wait (&global_barrier);
>> + assert (res == PTHREAD_BARRIER_SERIAL_THREAD || res == 0);
>> +
>> + while (1)
>> + {
>> + /* Nothing. */
>> + }
>> +}
>> +
>> +/* The function for a SYSCALL action. Just spins in a loop. The
>> LOCATION
>> + argument exists so GDB can identify the expected context for this
>> + function. */
>> +
>> +void
>> +do_syscall_task (enum exec_location location)
>> +{
>> + (void) location;
>> +
>> + /* Let everyone know that we're about to perform our action. */
>> + int res = pthread_barrier_wait (&global_barrier);
>> + assert (res == PTHREAD_BARRIER_SERIAL_THREAD || res == 0);
>> +
>> + sleep (600);
>> +}
>> +
>> +/* Return the required size for a sigaltstack. We start with a single
>> + page, but do check against the system defined minimums. We don't run
>> + much on the alternative stacks, so we don't need a huge one. */
>> +
>> +size_t
>> +get_stack_size (void)
>> +{
>> + size_t size = getpagesize (); /* Arbitrary starting size. */
>> + if (size < SIGSTKSZ)
>> + size = SIGSTKSZ;
>> + if (size < MINSIGSTKSZ)
>> + size = MINSIGSTKSZ;
>> + return size;
>> +}
>> +
>> +/* A descriptor for an alternative stack. */
>> +
>> +struct stack_descriptor
>> +{
>> + /* The base address of the alternative stack. This is the address
>> that
>> + must be freed to release the memory used by this stack. */
>> + void *base;
>> +
>> + /* The size of this alternative stack. Tracked just so we can
>> query this
>> + from GDB. */
>> + size_t size;
>> +};
>> +
>> +/* Install an alternative signal stack. Return a descriptor for the
>> newly
>> + allocated alternative stack. */
>> +
>> +struct stack_descriptor
>> +setup_alt_stack (void)
>> +{
>> + size_t stack_size = get_stack_size ();
>> +
>> + void *stack_area = malloc (stack_size);
>> +
>> + stack_t stk;
>> + stk.ss_sp = stack_area;
>> + stk.ss_flags = 0;
>> + stk.ss_size = stack_size;
>> +
>> + int res = sigaltstack (&stk, NULL);
>> + assert (res == 0);
>> +
>> + struct stack_descriptor desc;
>> + desc.base = stack_area;
>> + desc.size = stack_size;
>> +
>> + return desc;
>> +}
>> +
>> +/* Return true (non-zero) if we are currently on the alternative stack,
>> + otherwise, return false (zero). */
>> +
>> +int
>> +on_alt_stack_p (void)
>> +{
>> + stack_t stk;
>> + int res = sigaltstack (NULL, &stk);
>> + assert (res == 0);
>> +
>> + return (stk.ss_flags & SS_ONSTACK) != 0;
>> +}
>> +
>> +/* The signal handler function. All signals call here, so we use SIGNO
>> + (the signal that was delivered) to decide what action to
>> perform. This
>> + function might, or might not, have been called on an alternative
>> signal
>> + stack. */
>> +
>> +void
>> +signal_handler (int signo)
>> +{
>> + enum exec_location location
>> + = on_alt_stack_p () ? SIGNAL_ALT_STACK : SIGNAL_HANDLER;
>> +
>> + switch (signo)
>> + {
>> + case SPIN_SIGNAL:
>> + do_spin_task (location);
>> + break;
>> +
>> + case SYSCALL_SIGNAL:
>> + do_syscall_task (location);
>> + break;
>> +
>> + default:
>> + assert_not_reached ();
>> + }
>> +}
>> +
>> +/* The thread worker function. ARG is a job_description pointer which
>> + describes what this thread is expected to do. This function always
>> + returns a NULL pointer. */
>> +
>> +void *
>> +thread_function (void *arg)
>> +{
>> + struct job_description *job = (struct job_description *) arg;
>> + struct stack_descriptor desc = { NULL, 0 };
>> + int sa_flags = 0;
>> +
>> + switch (job->location)
>> + {
>> + case NORMAL:
>> + /* This thread performs the worker action on the current thread,
>> + select the correct worker function based on the requested
>> + action. */
>> + switch (job->action)
>> + {
>> + case SPIN:
>> + do_spin_task (NORMAL);
>> + break;
>> +
>> + case SYSCALL:
>> + do_syscall_task (NORMAL);
>> + break;
>> +
>> + default:
>> + assert_not_reached ();
>> + }
>> + break;
>> +
>> + case SIGNAL_ALT_STACK:
>> + /* This thread is to perform its action in a signal handler on
>> the
>> + alternative stack. Install the alternative stack now, and then
>> + fall through to the normal signal handler location code. */
>> + desc = setup_alt_stack ();
>> + assert (desc.base != NULL);
>> + assert (desc.size > 0);
>> + sa_flags = SA_ONSTACK;
>> +
>> + /* Fall through. */
>> + case SIGNAL_HANDLER:
>> + {
>> + /* This thread is to perform its action in a signal handler. We
>> + might have just installed an alternative signal stack. */
>> + int signo, res;
>> +
>> + /* Select the correct signal number so that the signal handler will
>> + perform the required action. */
>> + switch (job->action)
>> + {
>> + case SPIN:
>> + signo = SPIN_SIGNAL;
>> + break;
>> +
>> + case SYSCALL:
>> + signo = SYSCALL_SIGNAL;
>> + break;
>> +
>> + default:
>> + assert_not_reached ();
>> + }
>> +
>> + /* Now setup the signal handler. */
>> + struct sigaction sa;
>> + sa.sa_handler = signal_handler;
>> + sigfillset (&sa.sa_mask);
>> + sa.sa_flags = sa_flags;
>> + res = sigaction (signo, &sa, NULL);
>> + assert (res == 0);
>> +
>> + /* Send the signal to this thread. */
>> + res = pthread_kill (job->thread, signo);
>> + assert (res == 0);
>> + }
>> + break;
>> +
>> + default:
>> + assert_not_reached ();
>> + };
>> +
>> + /* Free the alt-stack if we allocated one, if not DESC.BASE will be
>> + NULL so this call is fine. */
>> + free (desc.base);
>> +
>> + /* Thread complete. */
>> + return NULL;
>> +}
>> +
>> +void
>> +start_job (struct job_description *job)
>> +{
>> + int res;
>> +
>> + res = pthread_create (&job->thread, NULL, thread_function, job);
>> + assert (res == 0);
>> +}
>> +
>> +/* Join with the thread for JOB. This will block until the thread
>> for JOB
>> + has finished. */
>> +
>> +void
>> +finalise_job (struct job_description *job)
>> +{
>> + int res;
>> + void *retval;
>> +
>> + res = pthread_join (job->thread, &retval);
>> + assert (res == 0);
>> + assert (retval == NULL);
>> +}
>> +
>> +/* Function that GDB can place a breakpoint on. */
>> +
>> +void
>> +breakpt (void)
>> +{
>> + /* Nothing. */
>> +}
>> +
>> +/* Function that triggers a crash, if the user has setup their
>> environment
>> + correctly this will dump a core file, which GDB can then
>> examine. */
>> +
>> +void
>> +crash_function (void)
>> +{
>> + volatile int *p = 0;
>> + volatile int n = *p;
>> + (void) n;
>> +}
>> +
>> +/* Entry point. */
>> +
>> +int
>> +main ()
>> +{
>> + int job_count, res;
>> + struct job_description *jobs = get_job_list (&job_count);
>> +
>> + /* This test is going to park some threads inside infinite loops.
>> Just
>> + in case this program is left running, install an alarm that
>> will cause
>> + everything to exit. */
>> + alarm (WATCHDOG_ALARM_TIME);
>> +
>> + /* We want each worker thread (of which there are JOB_COUNT) plus the
>> + main thread (hence + 1) to wait at the barrier. */
>> + res = pthread_barrier_init (&global_barrier, NULL, job_count + 1);
>> + assert (res == 0);
>> +
>> + /* Start all the jobs. */
>> + for (int i = 0; i < job_count; ++i)
>> + start_job (&jobs[i]);
>> +
>> + /* Notify all the worker threads that we're waiting for them. */
>> + res = pthread_barrier_wait (&global_barrier);
>> + assert (res == PTHREAD_BARRIER_SERIAL_THREAD || res == 0);
>> +
>> + /* All we know at this point is that all the worker threads have
>> reached
>> + the barrier, which is just before they perform their action.
>> But we
>> + really want them to start their action.
>> +
>> + There's really no way we can be 100% certain that the worker
>> threads
>> + have started their action, all we can do is wait for a short
>> while and
>> + hope that the machine we're running on is not too slow. */
>> + sleep (MAIN_THREAD_DELAY);
>> +
>> + /* A function that GDB can place a breakpoint on. By the time we get
>> + here we are as sure as we can be that all of the worker threads
>> have
>> + started and are in their worker action (spinning, or syscall). */
>> + breakpt ();
>> +
>> + /* If GDB is not attached then this function will cause a crash,
>> which
>> + can be used to dump a core file, which GDB can then analyse. */
>> + crash_function ();
>> +
>> + /* Due to the crash we never expect to get here. Plus the worker
>> actions
>> + never terminate. But for completeness, here's where we join
>> with all
>> + the worker threads. */
>> + for (int i = 0; i < job_count; ++i)
>> + finalise_job (&jobs[i]);
>> +
>> + /* Cleanup the barrier. */
>> + res = pthread_barrier_destroy (&global_barrier);
>> + assert (res == 0);
>> +
>> + /* And clean up the jobs list. */
>> + free (jobs);
>> +
>> + return 0;
>> +}
>> diff --git a/gdb/testsuite/gdb.threads/threadcrash.exp
>> b/gdb/testsuite/gdb.threads/threadcrash.exp
>> new file mode 100644
>> index 00000000000..996e020d1e8
>> --- /dev/null
>> +++ b/gdb/testsuite/gdb.threads/threadcrash.exp
>> @@ -0,0 +1,233 @@
>> +# This testcase is part of GDB, the GNU debugger.
>> +
>> +# Copyright 2023 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/>.
>> +
>> +# This test case looks at GDB's ability to get correct backtraces for a
>> +# crashed inferior, recreating it from a live inferior, a corefile and
>> +# a gcore.
>> +
>> +
>> +# Check that the inferior has 7 threads, and return the number of
>> threads (7).
>> +# We return the thread count so that, even if there is some error in
>> the test,
>> +# the final log doesn't get flooded with failures.
>> +
>> +proc test_thread_count {} {
>> + set thread_count 0
>> +
>> + gdb_test_multiple "info threads" "getting thread count" -lbl {
>> + -re "Thread" {
>> + incr thread_count
>> + exp_continue
>> + }
>> + -re "$::gdb_prompt " {
>> + gdb_assert {$thread_count == 7}
>> + }
>> + }
>> +
>> + return $thread_count
>> +}
>> +
>> +# Use 'thread apply all backtrace' to check if all expected threads
>> +# are present, and stopped in the expected locations. Set the global
>> +# TEST_LIST to be the a list of regexps expected to match all the
>> +# threads. We generate it now so that the list is in the order that
>> +# GDB sees the threads.
>> +
>> +proc thread_apply_all {} {
>> + global test_list
>> +
>> + set test_list { }
>> +
>> + set unwind_fail false
>> +
>> + gdb_test_multiple "thread apply all backtrace" \
>> + "Get thread information" -lbl {
>> + -re "#\[0-9\]+\\\?\\\?\[^\n\]*" {
>> + set unwind_fail true
>> + exp_continue
>> + }
>> + -re "\[^\n\]*syscall_task .location=SIGNAL_ALT_STACK\[^\n\]*" {
>> + lappend test_list [multi_line ".*sleep.*" \
>> + ".*do_syscall_task
>> .location=SIGNAL_ALT_STACK.*" \
>> + ".*signal_handler.*" \
>> + ".*signal handler called.*" \
>> + ".*pthread_kill.*" \
>> + ".*thread_function.*"]
>> + exp_continue
>> + }
>> + -re "\[^\n\]*syscall_task .location=SIGNAL_HANDLER\[^\n\]*" {
>> + lappend test_list [multi_line ".*sleep.*" \
>> + ".*do_syscall_task
>> .location=SIGNAL_HANDLER.*" \
>> + ".*signal_handler.*" \
>> + ".*signal handler called.*" \
>> + ".*pthread_kill.*" \
>> + ".*thread_function.*"]
>> + exp_continue
>> + }
>> + -re "\[^\n\]*syscall_task .location=NORMAL\[^\n\]*" {
>> + lappend test_list [multi_line ".*sleep.*" \
>> + ".*do_syscall_task .location=NORMAL.*" \
>> + ".*thread_function.*"]
>> + exp_continue
>> + }
>> + -re "\[^\n\]*spin_task .location=SIGNAL_ALT_STACK\[^\n\]*" {
>> + lappend test_list [multi_line ".*do_spin_task
>> .location=SIGNAL_ALT_STACK.*" \
>> + ".*signal_handler.*" \
>> + ".*signal handler called.*" \
>> + ".*pthread_kill.*" \
>> + ".*thread_function.*"]
>> + exp_continue
>> + }
>> + -re "\[^\n\]*spin_task .location=SIGNAL_HANDLER\[^\n\]*" {
>> + lappend test_list [multi_line ".*do_spin_task
>> .location=SIGNAL_HANDLER.*" \
>> + ".*signal_handler.*" \
>> + ".*signal handler called.*" \
>> + ".*pthread_kill.*" \
>> + ".*thread_function.*"]
>> + exp_continue
>> + }
>> + -re "\[^\n\]*spin_task .location=NORMAL\[^\n\]*" {
>> + lappend test_list [multi_line ".*do_spin_task
>> .location=NORMAL..*" \
>> + ".*thread_function.*"]
>> + exp_continue
>> + }
>> + -re "\[^\n\]*main\[^\n\]*" {
>> + lappend test_list ".*main.*"
>> + exp_continue
>> + }
>> + -re "$::gdb_prompt " {
>> + pass $gdb_test_name
>> + }
>> + }
>> +
>> + gdb_assert {$unwind_fail == false}
>> +}
>> +
>> +# Perform all the tests we're interested in. They are:
>> +# * test if we have 7 threads
>> +# * Creating the list of backtraces for all threads seen
>> +# * testing if GDB recreated the full backtrace we expect for all
>> threads
>> +
>> +proc do_full_test {} {
>> + global test_list
>> + set thread_count [test_thread_count]
>> +
>> + thread_apply_all
>> +
>> + gdb_assert {$thread_count == [llength $test_list]}
>> +
>> + for {set i 0} {$i < $thread_count } {incr i} {
>> + set thread_num [expr [llength $test_list] - $i]
>> +
>> + gdb_test "thread apply $thread_num backtrace" [lindex $test_list
>> $i]
>> + }
>> +}
>> +
>> +# Do all preparation steps for running the corefile tests, then
>> +# call do_full_test to actually run the tests.
>> +
>> +proc_with_prefix test_live_inferior {} {
>> + gdb_test "handle SIGUSR1 nostop print pass" \
>> + ".*SIGUSR1.*No.*Yes.*Yes.*User defined signal 1" \
>> + "setup SIGUSR1"
>> + gdb_test "handle SIGUSR2 nostop print pass" \
>> + ".*SIGUSR2.*No.*Yes.*Yes.*User defined signal 2" \
>> + "setup SIGUSR2"
>> +
>> + if {![runto_main]} {
>> + return
>> + }
>> +
>> + gdb_breakpoint "breakpt"
>> + gdb_continue_to_breakpoint "running to breakpoint" ".*"
>> +
>> + do_full_test
>> +}
>> +
>> +# Do all preparation steps for running the corefile tests, then
>> +# call do_full_test to actually run the tests.
>> +
>> +proc_with_prefix test_corefile {} {
>> + set corefile [core_find $::binfile]
>> + if { $corefile == "" } {
>> + untested "couldn't generate corefile"
>> + return
>> + }
>> + set corefile [gdb_remote_download host $corefile]
>> +
>> + gdb_test "core-file $corefile" \
>> + "" \
>> + "loading_corefile" \
>> + "A program is being debugged already\\\. Kill it\\\? \\\(y
>> or n\\\) " \
>> + "y"
>> +
>> + do_full_test
>> +}
>> +
>> +# Do all preparation steps for running the gcore tests, then
>> +# call do_full_test to actually run the tests.
>> +
>> +proc_with_prefix test_gcore {} {
>> +
>> + clean_restart "$::binfile"
>> +
>> + gdb_test "handle SIGUSR1 nostop print pass" \
>> + ".*SIGUSR1.*No.*Yes.*Yes.*User defined signal 1" \
>> + "setup SIGUSR1"
>> + gdb_test "handle SIGUSR2 nostop print pass" \
>> + ".*SIGUSR2.*No.*Yes.*Yes.*User defined signal 2" \
>> + "setup SIGUSR2"
>> +
>> + if {![runto_main]} {
>> + return -1
>> + }
>> + gdb_test "continue" ".*Segmentation fault.*" "continue to crash"
>> +
>> + set gcore_name "${::binfile}.gcore"
>> + set gcore_supported [gdb_gcore_cmd "$gcore_name" "saving gcore"]
>> +
>> + if {!$gcore_supported} {
>> + unsupported "couldn't generate gcore file"
>> + return
>> + }
>> +
>> + set corefile [gdb_remote_download host $gcore_name]
>> +
>> + gdb_test "core-file $corefile" \
>> + "" \
>> + "loading_corefile" \
>> + "A program is being debugged already\\\. Kill it\\\? \\\(y
>> or n\\\) " \
>> + "y"
>> +
>> + do_full_test
>> +}
>> +
>> +standard_testfile
>> +
>> +if [prepare_for_testing "failed to prepare" $testfile $srcfile \
>> + {debug pthreads}] {
>> + return -1
>> +}
>> +
>> +clean_restart ${binfile}
>> +
>> +gdb_test_no_output "set backtrace limit unlimited"
>> +
>> +test_live_inferior
>> +
>> +test_corefile
>> +
>> +test_gcore
>
>
--
Cheers,
Guinevere Larsen
She/Her/Hers
next prev parent reply other threads:[~2024-01-02 10:41 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-12-04 17:33 Guinevere Larsen
2023-12-20 9:40 ` Guinevere Larsen
2024-01-02 10:41 ` Guinevere Larsen [this message]
2024-01-09 11:50 ` [PINGv2][PATCH " Guinevere Larsen
2024-01-17 9:04 ` [PINGv3][PATCH " Guinevere Larsen
2024-01-24 9:34 ` Guinevere Larsen
2024-01-24 12:35 ` Luis Machado
2024-01-24 12:54 ` Guinevere Larsen
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