diff options
-rw-r--r-- | gdb/testsuite/ChangeLog | 4 | ||||
-rw-r--r-- | gdb/testsuite/gdb.threads/current-lwp-dead.c | 75 | ||||
-rw-r--r-- | gdb/testsuite/gdb.threads/current-lwp-dead.exp | 31 |
3 files changed, 110 insertions, 0 deletions
diff --git a/gdb/testsuite/ChangeLog b/gdb/testsuite/ChangeLog index cbbce9f..4732ed2 100644 --- a/gdb/testsuite/ChangeLog +++ b/gdb/testsuite/ChangeLog @@ -1,3 +1,7 @@ +2009-06-29 Jan Kratochvil <jan.kratochvil@redhat.com> + + * gdb.threads/current-lwp-dead.exp, gdb.threads/current-lwp-dead.c: New. + 2009-06-29 Tom Tromey <tromey@redhat.com> * dg-extract-results.sh: New file. diff --git a/gdb/testsuite/gdb.threads/current-lwp-dead.c b/gdb/testsuite/gdb.threads/current-lwp-dead.c new file mode 100644 index 0000000..11ca35b --- /dev/null +++ b/gdb/testsuite/gdb.threads/current-lwp-dead.c @@ -0,0 +1,75 @@ +/* This testcase is part of GDB, the GNU debugger. + + Copyright 2009 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/>. + + Do not use threads as we need to exploit a bug in LWP code masked by the + threads code otherwise. + + INFERIOR_PTID must point to exited LWP. Here we use the initial LWP as it + is automatically INFERIOR_PTID for GDB. + + Finally we need to call target_resume (RESUME_ALL, ...) which we invoke by + NEW_THREAD_EVENT (called from the new LWP as initial LWP is exited now). */ + +#define _GNU_SOURCE +#include <sched.h> +#include <assert.h> +#include <unistd.h> +#include <stdlib.h> + +#define STACK_SIZE 0x1000 + +static int +fn_return (void *unused) +{ + return 0; /* at-fn_return */ +} + +static int +fn (void *unused) +{ + int i; + unsigned char *stack; + int new_pid; + + i = sleep (1); + assert (i == 0); + + stack = malloc (STACK_SIZE); + assert (stack != NULL); + + new_pid = clone (fn_return, stack + STACK_SIZE, CLONE_FILES | CLONE_VM, NULL, + NULL, NULL, NULL); + assert (new_pid > 0); + + return 0; +} + +int +main (int argc, char **argv) +{ + unsigned char *stack; + int new_pid; + + stack = malloc (STACK_SIZE); + assert (stack != NULL); + + new_pid = clone (fn, stack + STACK_SIZE, CLONE_FILES | CLONE_VM, NULL, NULL, + NULL, NULL); + assert (new_pid > 0); + + return 0; +} diff --git a/gdb/testsuite/gdb.threads/current-lwp-dead.exp b/gdb/testsuite/gdb.threads/current-lwp-dead.exp new file mode 100644 index 0000000..bb175cd --- /dev/null +++ b/gdb/testsuite/gdb.threads/current-lwp-dead.exp @@ -0,0 +1,31 @@ +# This testcase is part of GDB, the GNU debugger. + +# Copyright 2009 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/>. + +# Please email any bugs, comments, and/or additions to this file to: +# bug-gdb@gnu.org + +if { [prepare_for_testing current-lwp-dead.exp current-lwp-dead] } { + return -1 +} + +if {[runto_main] <= 0} { + untested current-lwp-dead.exp + return -1 +} + +gdb_breakpoint "fn_return" +gdb_continue_to_breakpoint "fn_return" ".*at-fn_return.*" |