+From FEDORA_PATCHES Mon Sep 17 00:00:00 2001
+From: Andrew Cagney <cagney@gnu.org>
+Date: Fri, 27 Oct 2017 21:07:50 +0200
+Subject: gdb-6.3-gstack-20050411.patch
+
+;; Add a wrapper script to GDB that implements pstack using the
+;; --readnever option.
+;;=push
+
2004-11-23 Andrew Cagney <cagney@redhat.com>
* Makefile.in (uninstall-gstack, install-gstack): New rules, add
to install and uninstall.
* gstack.sh, gstack.1: New files.
-Index: gdb-6.8.50.20090226/gdb/Makefile.in
-===================================================================
---- gdb-6.8.50.20090226.orig/gdb/Makefile.in 2009-02-26 22:09:59.000000000 +0100
-+++ gdb-6.8.50.20090226/gdb/Makefile.in 2009-02-26 22:10:22.000000000 +0100
-@@ -973,7 +973,7 @@ install: all install-only
+diff --git a/gdb/Makefile.in b/gdb/Makefile.in
+--- a/gdb/Makefile.in
++++ b/gdb/Makefile.in
+@@ -1768,7 +1768,7 @@ info install-info clean-info dvi pdf install-pdf html install-html: force
+ install: all
+ @$(MAKE) $(FLAGS_TO_PASS) install-only
- # The "install-only" target also installs the syscalls' XML files in
- # the system.
--install-only: $(CONFIG_INSTALL) xml-syscall-install
-+install-only: install-gstack $(CONFIG_INSTALL) xml-syscall-install
+-install-only: $(CONFIG_INSTALL)
++install-only: install-gstack $(CONFIG_INSTALL)
transformed_name=`t='$(program_transform_name)'; \
echo gdb | sed -e "$$t"` ; \
if test "x$$transformed_name" = x; then \
-@@ -1005,9 +1005,26 @@ install-tui:
- $(DESTDIR)$(man1dir) ; \
- $(INSTALL_DATA) $(srcdir)/gdb.1 \
- $(DESTDIR)$(man1dir)/$$transformed_name.1
+@@ -1817,7 +1817,25 @@ install-guile:
+ install-python:
+ $(SHELL) $(srcdir)/../mkinstalldirs $(DESTDIR)$(GDB_DATADIR)/python/gdb
+
+-uninstall: force $(CONFIG_UNINSTALL)
+GSTACK=gstack
+.PHONY: install-gstack
+install-gstack:
+ $(DESTDIR)$(man1dir) ; \
+ : $(INSTALL_DATA) $(srcdir)/gstack.1 \
+ $(DESTDIR)$(man1dir)/$$transformed_name.1
-
-
--uninstall: force $(CONFIG_UNINSTALL)
++
+uninstall: force uninstall-gstack $(CONFIG_UNINSTALL)
transformed_name=`t='$(program_transform_name)'; \
echo gdb | sed -e $$t` ; \
if test "x$$transformed_name" = x; then \
-@@ -1029,6 +1046,17 @@ uninstall-tui:
- fi ; \
- rm -f $(DESTDIR)$(bindir)/$$transformed_name$(EXEEXT) \
- $(DESTDIR)$(man1dir)/$$transformed_name.1
+@@ -1840,6 +1858,18 @@ uninstall: force $(CONFIG_UNINSTALL)
+ fi
+ @$(MAKE) DO=uninstall "DODIRS=$(SUBDIRS)" $(FLAGS_TO_PASS) subdir_do
+
+.PHONY: uninstall-gstack
+uninstall-gstack:
+ transformed_name=`t='$(program_transform_name)'; \
+ fi ; \
+ rm -f $(DESTDIR)$(bindir)/$$transformed_name$(EXEEXT) \
+ $(DESTDIR)$(man1dir)/$$transformed_name.1
-
++
# The C++ name parser can be built standalone for testing.
test-cp-name-parser.o: cp-name-parser.c
-Index: gdb-6.8.50.20090226/gdb/gstack.sh
-===================================================================
---- /dev/null 1970-01-01 00:00:00.000000000 +0000
-+++ gdb-6.8.50.20090226/gdb/gstack.sh 2009-02-26 22:10:05.000000000 +0100
-@@ -0,0 +1,45 @@
+ $(COMPILE) -DTEST_CPNAMES cp-name-parser.c
+diff --git a/gdb/gstack.sh b/gdb/gstack.sh
+new file mode 100644
+--- /dev/null
++++ b/gdb/gstack.sh
+@@ -0,0 +1,43 @@
+#!/bin/sh
+
+if test $# -ne 1; then
+backtrace="bt"
+if test -d /proc/$1/task ; then
+ # Newer kernel; has a task/ directory.
-+ if test `ls /proc/$1/task | wc -l` -gt 1 2>/dev/null ; then
++ if test `/bin/ls /proc/$1/task | /usr/bin/wc -l` -gt 1 2>/dev/null ; then
+ backtrace="thread apply all bt"
+ fi
+elif test -f /proc/$1/maps ; then
+ # Older kernel; go by it loading libpthread.
-+ if grep -e libpthread /proc/$1/maps > /dev/null 2>&1 ; then
++ if /bin/grep -e libpthread /proc/$1/maps > /dev/null 2>&1 ; then
+ backtrace="thread apply all bt"
+ fi
+fi
+
+GDB=${GDB:-gdb}
+
-+if $GDB -nx --quiet --batch --readnever > /dev/null 2>&1; then
-+ readnever=--readnever
-+else
-+ readnever=
-+fi
-+
+# Run GDB, strip out unwanted noise.
-+$GDB --quiet $readnever -nx /proc/$1/exe $1 <<EOF 2>&1 |
++# --readnever is no longer used since .gdb_index is now in use.
++$GDB --quiet -nx $GDBARGS /proc/$1/exe $1 <<EOF 2>&1 |
++set width 0
++set height 0
++set pagination no
+$backtrace
+EOF
-+sed -n \
-+ -e 's/^(gdb) //' \
++/bin/sed -n \
++ -e 's/^\((gdb) \)*//' \
+ -e '/^#/p' \
+ -e '/^Thread/p'
+diff --git a/gdb/testsuite/gdb.base/gstack.c b/gdb/testsuite/gdb.base/gstack.c
+new file mode 100644
+--- /dev/null
++++ b/gdb/testsuite/gdb.base/gstack.c
+@@ -0,0 +1,43 @@
++/* This testcase is part of GDB, the GNU debugger.
++
++ Copyright 2005, 2007, 2008, 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/>. */
++
++#include <stdio.h>
++#include <unistd.h>
++#include <string.h>
++
++void
++func (void)
++{
++ const char msg[] = "looping\n";
++
++ /* Use the most simple notification not to get caught by attach on exiting
++ the function. */
++ write (1, msg, strlen (msg));
++
++ for (;;);
++}
++
++int
++main (void)
++{
++ alarm (60);
++ nice (100);
++
++ func ();
++
++ return 0;
++}
+diff --git a/gdb/testsuite/gdb.base/gstack.exp b/gdb/testsuite/gdb.base/gstack.exp
+new file mode 100644
+--- /dev/null
++++ b/gdb/testsuite/gdb.base/gstack.exp
+@@ -0,0 +1,84 @@
++# Copyright (C) 2012 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/>.
++
++set testfile gstack
++set executable ${testfile}
++set binfile [standard_output_file $executable]
++if {[build_executable ${testfile} ${executable} "" {debug}] == -1} {
++ return -1
++}
++
++set test "spawn inferior"
++set command "${binfile}"
++set res [remote_spawn host $command];
++if { $res < 0 || $res == "" } {
++ perror "Spawning $command failed."
++ fail $test
++ return
++}
++
++# The spawn id of the test inferior.
++set test_spawn_id $res
++
++set use_gdb_stub 1
++set pid [exp_pid -i $res]
++gdb_expect {
++ -re "looping\r\n" {
++ pass $test
++ }
++ eof {
++ fail "$test (eof)"
++ return
++ }
++ timeout {
++ fail "$test (timeout)"
++ return
++ }
++}
++
++# Testcase uses the most simple notification not to get caught by attach on
++# exiting the function. Still we could retry the gstack command if we fail.
++
++set test "spawn gstack"
++set command "sh -c GDB=$GDB\\ GDBARGS=-data-directory\\\\\\ $BUILD_DATA_DIRECTORY\\ sh\\ ${srcdir}/../gstack.sh\\ $pid\\;echo\\ GSTACK-END"
++set res [remote_spawn host $command];
++if { $res < 0 || $res == "" } {
++ perror "Spawning $command failed."
++ fail $test
++}
++
++set gdb_spawn_id $res
++
++gdb_test_multiple "" $test {
++ -re "^#0 +(0x\[0-9a-f\]+ in )?\\.?func \\(\\) at \[^\r\n\]*\r\n#1 +0x\[0-9a-f\]+ in \\.?main \\(\\) at \[^\r\n\]*\r\nGSTACK-END\r\n\$" {
++ pass $test
++ }
++}
++
++gdb_test_multiple "" "gstack exits" {
++ eof {
++ set result [wait -i $gdb_spawn_id]
++ verbose $result
++
++ gdb_assert { [lindex $result 2] == 0 } "gstack exits with no error"
++ gdb_assert { [lindex $result 3] == 0 } "gstack's exit status is 0"
++
++ remote_close host
++ clear_gdb_spawn_id
++ }
++}
++
++# Kill the test inferior.
++kill_wait_spawned_process $test_spawn_id
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