[python] 2.7.3-6: try again to fix test_gdb.py (patch 156; rhbz#817072)

[dmalcolm]

commit 1fa9c84f237d8822d26b9b229a4d68eed5b667c3
Author: David Malcolm <dmalcolm at redhat.com>
Date:   Mon Apr 30 16:20:26 2012 -0400

    2.7.3-6: try again to fix test_gdb.py (patch 156; rhbz#817072)
    
    * Mon Apr 30 2012 David Malcolm <dmalcolm at redhat.com> - 2.7.3-6
    - try again to fix test_gdb.py (patch 156; rhbz#817072)

 00156-gdb-autoload-safepath.patch |   56 ++++++++++++++++++++++++++++++------
 python.spec                       |    9 ++++--
 2 files changed, 52 insertions(+), 13 deletions(-)
---
diff --git a/00156-gdb-autoload-safepath.patch b/00156-gdb-autoload-safepath.patch
index 258c89d..54a5a6e 100644
--- a/00156-gdb-autoload-safepath.patch
+++ b/00156-gdb-autoload-safepath.patch
@@ -1,16 +1,52 @@
 diff -up Python-2.7.3/Lib/test/test_gdb.py.gdb-autoload-safepath Python-2.7.3/Lib/test/test_gdb.py
---- Python-2.7.3/Lib/test/test_gdb.py.gdb-autoload-safepath	2012-04-30 12:55:43.372351709 -0400
-+++ Python-2.7.3/Lib/test/test_gdb.py	2012-04-30 12:58:24.355339144 -0400
-@@ -111,6 +111,12 @@ class DebuggerTests(unittest.TestCase):
-                     # Disable this:
-                     'set print entry-values no',
+--- Python-2.7.3/Lib/test/test_gdb.py.gdb-autoload-safepath	2012-04-30 15:53:57.254045220 -0400
++++ Python-2.7.3/Lib/test/test_gdb.py	2012-04-30 16:19:19.569941124 -0400
+@@ -54,6 +54,19 @@ def gdb_has_frame_select():
+ 
+ HAS_PYUP_PYDOWN = gdb_has_frame_select()
  
-+                    # Recent GDBs will only auto-load scripts from certain safe
-+                    # locations.
-+                    # Turn off this protection during the build to ensure that
-+                    # our -gdb.py script can be loaded (rhbz#817072):
-+                    'set auto-load safe-path /',
++def gdb_has_autoload_safepath():
++    # Recent GDBs will only auto-load scripts from certain safe
++    # locations, so we will need to turn off this protection.
++    # However, if the GDB doesn't have it, then the following
++    # command will generate noise on stderr (rhbz#817072):
++    cmd = "--eval-command=set auto-load safe-path /"
++    p = subprocess.Popen(["gdb", "--batch", cmd],
++                         stderr=subprocess.PIPE)
++    _, stderr = p.communicate()
++    return '"on" or "off" expected.' not in stderr
++    
++HAS_AUTOLOAD_SAFEPATH = gdb_has_autoload_safepath()
 +
+ class DebuggerTests(unittest.TestCase):
+ 
+     """Test that the debugger can debug Python."""
+@@ -112,15 +125,28 @@ class DebuggerTests(unittest.TestCase):
+                     'set print entry-values no',
+ 
                      'run']
++
++        if HAS_AUTOLOAD_SAFEPATH:
++            # Recent GDBs will only auto-load scripts from certain safe
++            # locations.
++            # Where necessary, turn off this protection to ensure that
++            # our -gdb.py script can be loaded - but not on earlier gdb builds
++            # as this would generate noise on stderr (rhbz#817072):
++            init_commands = ['set auto-load safe-path /']
++        else:
++            init_commands = []
++
          if cmds_after_breakpoint:
              commands += cmds_after_breakpoint
+         else:
+             commands += ['backtrace']
+ 
++        # print init_commands
+         # print commands
+ 
+         # Use "commands" to generate the arguments with which to invoke "gdb":
+         args = ["gdb", "--batch"]
++        args += ['--init-eval-command=%s' % cmd for cmd in init_commands]
+         args += ['--eval-command=%s' % cmd for cmd in commands]
+         args += ["--args",
+                  sys.executable]
diff --git a/python.spec b/python.spec
index b5ae554..a18ad2f 100644
--- a/python.spec
+++ b/python.spec
@@ -108,7 +108,7 @@ Summary: An interpreted, interactive, object-oriented programming language
 Name: %{python}
 # Remember to also rebase python-docs when changing this:
 Version: 2.7.3
-Release: 5%{?dist}
+Release: 6%{?dist}
 License: Python
 Group: Development/Languages
 Requires: %{python}-libs%{?_isa} = %{version}-%{release}
@@ -624,8 +624,8 @@ Patch153: 00153-fix-test_gdb-noise.patch
 Patch155: 00155-avoid-ctypes-thunks.patch
 
 # Recent builds of gdb will only auto-load scripts from certain safe
-# locations.  Turn off this protection during the build to ensure that our
-# -gdb.py script can be loaded when running test_gdb (rhbz#817072):
+# locations.  Turn off this protection when running test_gdb in the selftest
+# suite to ensure that it can load our -gdb.py script (rhbz#817072):
 Patch156: 00156-gdb-autoload-safepath.patch
 
 # (New patches go here ^^^)
@@ -1779,6 +1779,9 @@ rm -fr %{buildroot}
 # ======================================================
 
 %changelog
+* Mon Apr 30 2012 David Malcolm <dmalcolm at redhat.com> - 2.7.3-6
+- try again to fix test_gdb.py (patch 156; rhbz#817072)
+
 * Mon Apr 30 2012 David Malcolm <dmalcolm at redhat.com> - 2.7.3-5
 - fix test_gdb.py (patch 156; rhbz#817072)