old-cross-binutils/gdb/testsuite/gdb.base/catch-fork-static.exp
Josh Stone ece66d6510 gdbserver: set ptrace flags after creating inferiors
Rename target_ops.arch_setup to .post_create_inferior.  In the Linux
hook, continue calling the low arch setup, then also set ptrace flags.
This corrects the possibility of running without flags, demonstrated by
a new test that would fail to catch a fork before.

gdb/gdbserver/ChangeLog:

2015-12-04  Josh Stone  <jistone@redhat.com>

	* target.h (struct target_ops) <arch_setup>: Rename to ...
	(struct target_ops) <post_create_inferior>: ... this.
	(target_arch_setup): Rename to ...
	(target_post_create_inferior): ... this, calling post_create_inferior.
	* server.c (start_inferior): Update target_arch_setup calls to
	target_post_create_inferior.
	* linux-low.c (linux_low_ptrace_options): Forward declare.
	(linux_arch_setup): Update its comment for general use.
	(linux_post_create_inferior): New, run arch_setup and setup ptrace.
	(struct linux_target_ops): Use linux_post_create_inferior.
	* lynx-low.c (struct lynx_target_ops): Update arch_setup stub comment
	to post_create_inferior.
	* nto-low.c (struct nto_target_ops): Likewise.
	* spu-low.c (struct spu_target_ops): Likewise.
	* win32-low.c (struct win32_target_ops): Likewise.

gdb/testsuite/ChangeLog:

2015-12-04  Josh Stone  <jistone@redhat.com>

	* gdb.base/catch-fork-static.exp: New.
2015-12-04 18:25:26 -08:00

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# Copyright (C) 2015 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/>.
# Test that "catch fork" works on static executables.
# For instance, on Linux we need PTRACE_O_TRACEFORK set before the program
# reaches the fork. GDBserver was only setting flags when it reached the first
# stop *after* arch_setup. In a dynamic executable there is often a swbreak in
# ld.so probes before reaching main, and ptrace flags were set then. But a
# static executable would just keep running and never catch the fork.
if { [is_remote target] || ![isnative] } then {
continue
}
# Until "catch fork" is implemented on other targets...
#
if { ![istarget "hppa*-hp-hpux*"] && ![istarget "*-*-linux*"]
&& ![istarget "*-*-openbsd*"] } then {
continue
}
# Reusing foll-fork.c since it's a simple forking program.
standard_testfile foll-fork.c
if { [prepare_for_testing ${testfile}.exp ${testfile} $srcfile \
{additional_flags=-static}] } {
return -1
}
gdb_test "catch fork" "Catchpoint \[0-9\]* \\(fork\\)"
gdb_run_cmd
gdb_test "" \
"Catchpoint \[0-9\]* \\(forked process \[0-9\]*\\),.*" \
"run to fork"