From FEDORA_PATCHES Mon Sep 17 00:00:00 2001

From: Fedora GDB patches <invalid@email.com>

Date: Fri, 27 Oct 2017 21:07:50 +0200

Subject: gdb-6.5-gcore-buffer-limit-test.patch

;; Test gcore memory and time requirements for large inferiors.

;;=fedoratest

diff --git a/gdb/testsuite/gdb.base/gcore-excessive-memory.c b/gdb/testsuite/gdb.base/gcore-excessive-memory.c

new file mode 100644

--- /dev/null

+++ b/gdb/testsuite/gdb.base/gcore-excessive-memory.c

@@ -0,0 +1,37 @@

+/* This testcase is part of GDB, the GNU debugger.

+

+   Copyright 2008 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 2 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, write to the Free Software

+   Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.

+

+   Please email any bugs, comments, and/or additions to this file to:

+   bug-gdb@prep.ai.mit.edu  */

+

+#include <unistd.h>

+#include <stdlib.h>

+

+#define MEGS 64

+

+int main()

+{

+  void *mem;

+

+  mem = malloc (MEGS * 1024ULL * 1024ULL);

+

+  for (;;)

+    sleep (1);

+

+  return 0;

+}

diff --git a/gdb/testsuite/gdb.base/gcore-excessive-memory.exp b/gdb/testsuite/gdb.base/gcore-excessive-memory.exp

new file mode 100644

--- /dev/null

+++ b/gdb/testsuite/gdb.base/gcore-excessive-memory.exp

@@ -0,0 +1,99 @@

+# Copyright 2008 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 2 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, write to the Free Software

+# Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.

+

+if {[use_gdb_stub]} {

+    untested "skipping test because of use_gdb_stub"

+    return -1

+}

+

+set testfile gcore-excessive-memory

+set srcfile ${testfile}.c

+set shfile [standard_output_file ${testfile}-gdb.sh]

+set corefile [standard_output_file ${testfile}.core]

+set binfile [standard_output_file ${testfile}]

+if  { [gdb_compile "${srcdir}/${subdir}/${srcfile}" "${binfile}" executable {debug}] != "" } {

+    untested "Couldn't compile test program"

+    return -1

+}

+

+set f [open "|getconf PAGESIZE" "r"]

+gets $f pagesize

+close $f

+

+set pid_of_bin [eval exec $binfile &]

+sleep 2

+

+# Get things started.

+

+gdb_exit

+gdb_start

+gdb_reinitialize_dir $srcdir/$subdir

+gdb_load ${binfile}

+

+set pid_of_gdb [exp_pid -i [board_info host fileid]]

+

+gdb_test "attach $pid_of_bin" "Attaching to .*" "attach"

+gdb_test "up 99" "in main .*" "verify we can get to main"

+

+proc memory_v_pages_get {} {

+    global pid_of_gdb pagesize

+    set fd [open "/proc/$pid_of_gdb/statm"]

+    gets $fd line

+    close $fd

+    # number of pages of virtual memory

+    scan $line "%d" drs

+    return $drs

+}

+

+set pages_found [memory_v_pages_get]

+

+# It must be definitely less than `MEGS' of `gcore-excessive-memory.c'.

+set mb_gcore_reserve 4

+verbose -log "pages_found = $pages_found, mb_gcore_reserve = $mb_gcore_reserve"

+set kb_found [expr $pages_found * $pagesize / 1024]

+set kb_permit [expr $kb_found + 1 * 1024 + $mb_gcore_reserve * 1024]

+verbose -log "kb_found = $kb_found, kb_permit = $kb_permit"

+

+# Create the ulimit wrapper.

+set f [open $shfile "w"]

+puts $f "#! /bin/sh"

+puts $f "ulimit -v $kb_permit"

+puts $f "exec $GDB \"\$@\""

+close $f

+remote_exec host "chmod +x $shfile"

+

+gdb_exit

+set GDBold $GDB

+set GDB "$shfile"

+gdb_start

+set GDB $GDBold

+

+gdb_reinitialize_dir $srcdir/$subdir

+gdb_load ${binfile}

+

+set pid_of_gdb [exp_pid -i [board_info host fileid]]

+

+gdb_test "attach $pid_of_bin" "Attaching to .*" "attach"

+gdb_test "up 99" "in main .*" "verify we can get to main"

+

+verbose -log "kb_found before gcore = [expr [memory_v_pages_get] * $pagesize / 1024]"

+

+gdb_test "gcore $corefile" "Saved corefile \[^\n\r\]*" "Save the core file"

+

+verbose -log "kb_found after gcore = [expr [memory_v_pages_get] * $pagesize / 1024]"

+

+# Cleanup.

+exec kill -9 $pid_of_bin