PR gdb/16626

Fix auto-load 7.7 regression,
the regression affects any loading from /usr/share/gdb/auto-load .

5b2bf9471f is the first bad commit
commit 5b2bf9471f
Author: Doug Evans <xdje42@gmail.com>
Date:   Fri Nov 29 21:29:26 2013 -0800
    Move .debug_gdb_script processing to auto-load.c.
    Simplify handling of auto-loaded objfile scripts.

Fedora 20 x86_64
$ gdb -q /usr/lib64/libgobject-2.0.so
Reading symbols from /usr/lib64/libglib-2.0.so.0.3800.2...Reading symbols from
/usr/lib/debug/usr/lib64/libglib-2.0.so.0.3800.2.debug...done.
done.
(gdb) _

Fedora Rawhide x86_64
$ gdb -q /usr/lib64/libgobject-2.0.so
Reading symbols from /usr/lib64/libglib-2.0.so...Reading symbols from
/usr/lib/debug/usr/lib64/libglib-2.0.so.0.3990.0.debug...done.
done.
warning: File "/usr/lib64/libglib-2.0.so.0.3990.0-gdb.py" auto-loading has been declined by your `auto-load safe-path'
set to "$debugdir:$datadir/auto-load:/usr/bin/mono-gdb.py".
To enable execution of this file add
        add-auto-load-safe-path /usr/lib64/libglib-2.0.so.0.3990.0-gdb.py
line to your configuration file "/home/jkratoch/.gdbinit".
To completely disable this security protection add
        set auto-load safe-path /
line to your configuration file "/home/jkratoch/.gdbinit".
For more information about this security protection see the
"Auto-loading safe path" section in the GDB manual.  E.g., run from the shell:
        info "(gdb)Auto-loading safe path"
(gdb) _

That is it tries to load "forbidden"
	/usr/lib64/libglib-2.0.so.0.3990.0-gdb.py
but it should load instead
	/usr/share/gdb/auto-load/usr/lib64/libglib-2.0.so.0.3990.0-gdb.py*
Although that is also not exactly this way, there does not exist any
	/usr/lib64/libglib-2.0.so.0.3990.0-gdb.py
despite regressed GDB says so.

gdb/
2014-02-24  Jan Kratochvil  <jan.kratochvil@redhat.com>

	PR gdb/16626
	* auto-load.c (auto_load_objfile_script_1): Change filename to
	debugfile.

gdb/testsuite/
2014-02-24  Jan Kratochvil  <jan.kratochvil@redhat.com>

	PR gdb/16626
	* gdb.base/auto-load-script: New file.
	* gdb.base/auto-load.c: New file.
	* gdb.base/auto-load.exp: New file.

Message-ID: <20140223212400.GA8831@host2.jankratochvil.net>

gdb/ChangeLog

@@ -1,3 +1,9 @@
+2014-02-25  Jan Kratochvil  <jan.kratochvil@redhat.com>
+
+	PR gdb/16626
+	* auto-load.c (auto_load_objfile_script_1): Change filename to
+	debugfile.
+
 2014-02-09  Jan Kratochvil  <jan.kratochvil@redhat.com>
 
 	Fix Python stack corruption.

gdb/auto-load.c

@@ -791,17 +791,17 @@ auto_load_objfile_script_1 (struct objfile *objfile, const char *realname,
       make_cleanup_fclose (input);
 
       is_safe
-	= file_is_auto_load_safe (filename,
+	= file_is_auto_load_safe (debugfile,
 				  _("auto-load: Loading %s script \"%s\""
 				    " by extension for objfile \"%s\".\n"),
-				  language->name, filename,
+				  language->name, debugfile,
 				  objfile_name (objfile));
 
       /* Add this script to the hash table too so
 	 "info auto-load ${lang}-scripts" can print it.  */
       pspace_info
 	= get_auto_load_pspace_data_for_loading (current_program_space);
-      maybe_add_script (pspace_info, is_safe, filename, filename, language);
+      maybe_add_script (pspace_info, is_safe, debugfile, debugfile, language);
 
       /* To preserve existing behaviour we don't check for whether the
 	 script was already in the table, and always load it.

gdb/testsuite/ChangeLog

@@ -1,3 +1,10 @@
+2014-02-25  Jan Kratochvil  <jan.kratochvil@redhat.com>
+
+	PR gdb/16626
+	* gdb.base/auto-load-script: New file.
+	* gdb.base/auto-load.c: New file.
+	* gdb.base/auto-load.exp: New file.
+
 2014-02-05  Yao Qi  <yao@codesourcery.com>
 
 	* gdb.trace/report.exp (use_collected_data): Test the output

gdb/testsuite/gdb.base/auto-load-script

@@ -0,0 +1,17 @@
+# Copyright 2014 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/>.
+
+echo script_loaded\n
+set $script_loaded=42

gdb/testsuite/gdb.base/auto-load.c

@@ -0,0 +1,22 @@
+/* This testcase is part of GDB, the GNU debugger.
+
+   Copyright 2014 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/>.  */
+
+int
+main (void)
+{
+  return 0;
+}

gdb/testsuite/gdb.base/auto-load.exp

@@ -0,0 +1,41 @@
+# Copyright 2014 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/>.
+
+standard_testfile
+
+if [is_remote host] {
+    return 0
+}
+
+set targetdir "${binfile}.dir"
+set sourcescript "${binfile}-script"
+set targetscriptdir "${targetdir}/[file dirname ${sourcescript}]"
+set targetscript "${targetscriptdir}/${testfile}-gdb.gdb"
+
+remote_exec host "rm -rf ${targetdir}"
+
+if { [prepare_for_testing ${testfile}.exp ${testfile} ${srcfile}] } {
+    return -1
+}
+
+remote_exec host "mkdir -p ${targetscriptdir}"
+remote_exec host "cp ${sourcescript} ${targetscript}"
+
+gdb_test_no_output "set auto-load scripts-directory ${targetdir}" "set auto-load scripts-directory"
+gdb_test_no_output "set auto-load safe-path ${targetscript}" "set auto-load safe-path"
+
+gdb_load ${binfile}
+
+gdb_test {print $script_loaded} " = 42"