[PATCH] Some Python 3 fixes

[Simon Marchi <simon.marchi@ericsson.com>]

Some missing parentheses and one itertools.imap (Py2) vs map (Py3) issue.

gdb/ChangeLog:

	* python/lib/gdb/command/unwinders.py: Add parentheses.

gdb/testsuite/ChangeLog:

	* gdb.python/py-framefilter.py (ErrorFilter.filter): Use map function
	if itertools.imap is not present.
	* gdb.python/py-objfile.exp: Add parentheses.
	* gdb.python/py-type.exp: Same.
	* gdb.python/py-unwind-maint.py: Same.
---
 gdb/python/lib/gdb/command/unwinders.py     | 2 +-
 gdb/testsuite/gdb.python/py-framefilter.py  | 7 ++++++-
 gdb/testsuite/gdb.python/py-objfile.exp     | 4 ++--
 gdb/testsuite/gdb.python/py-type.exp        | 4 ++--
 gdb/testsuite/gdb.python/py-unwind-maint.py | 8 ++++----
 5 files changed, 15 insertions(+), 10 deletions(-)

diff --git a/gdb/python/lib/gdb/command/unwinders.py b/gdb/python/lib/gdb/command/unwinders.py
index 8530b35..1a5aed9 100644
--- a/gdb/python/lib/gdb/command/unwinders.py
+++ b/gdb/python/lib/gdb/command/unwinders.py
@@ -83,7 +83,7 @@ class InfoUnwinder(gdb.Command):
         """
         if not unwinders:
             return
-        print title
+        print(title)
         for unwinder in unwinders:
             if name_re.match(unwinder.name):
                 print("  %s%s" % (unwinder.name,
diff --git a/gdb/testsuite/gdb.python/py-framefilter.py b/gdb/testsuite/gdb.python/py-framefilter.py
index 0de026c..1e5b2b3 100644
--- a/gdb/testsuite/gdb.python/py-framefilter.py
+++ b/gdb/testsuite/gdb.python/py-framefilter.py
@@ -145,7 +145,12 @@ class ErrorFilter():
         gdb.frame_filters [self.name] = self
 
     def filter(self, frame_iter):
-        return itertools.imap(ErrorInName, frame_iter)
+        # Python 3.x moved the itertools.imap functionality to map(),
+        # so check if it is available.
+        if hasattr(itertools, "imap"):
+            return itertools.imap (ErrorInName, frame_iter)
+        else:
+            return map(ErrorInName, frame_iter)
 
 FrameFilter()
 FrameElider()
diff --git a/gdb/testsuite/gdb.python/py-objfile.exp b/gdb/testsuite/gdb.python/py-objfile.exp
index b53f5e3..4de20c5 100644
--- a/gdb/testsuite/gdb.python/py-objfile.exp
+++ b/gdb/testsuite/gdb.python/py-objfile.exp
@@ -88,9 +88,9 @@ if { [gdb_unload] < 0 } {
     return -1
 }
 
-gdb_test "python print objfile.filename" "None" \
+gdb_test "python print(objfile.filename)" "None" \
     "objfile.filename after objfile is unloaded"
-gdb_test "python print objfile.username" "None" \
+gdb_test "python print(objfile.username)" "None" \
     "objfile.username after objfile is unloaded"
 
 # Now build another copy of the testcase, this time without debug info.
diff --git a/gdb/testsuite/gdb.python/py-type.exp b/gdb/testsuite/gdb.python/py-type.exp
index c4c8d9f..9e522f2 100644
--- a/gdb/testsuite/gdb.python/py-type.exp
+++ b/gdb/testsuite/gdb.python/py-type.exp
@@ -247,10 +247,10 @@ restart_gdb "${binfile}"
 # Skip all tests if Python scripting is not enabled.
 if { [skip_python_tests] } { continue }
 
-gdb_test "python print gdb.lookup_type('char').array(1, 0)" \
+gdb_test "python print(gdb.lookup_type('char').array(1, 0))" \
     "char \\\[0\\\]"
 
-gdb_test "python print gdb.lookup_type('char').array(1, -1)" \
+gdb_test "python print(gdb.lookup_type('char').array(1, -1))" \
     "Array length must not be negative.*"
 
 with_test_prefix "lang_c" {
diff --git a/gdb/testsuite/gdb.python/py-unwind-maint.py b/gdb/testsuite/gdb.python/py-unwind-maint.py
index f8c6277..288fe07 100644
--- a/gdb/testsuite/gdb.python/py-unwind-maint.py
+++ b/gdb/testsuite/gdb.python/py-unwind-maint.py
@@ -24,7 +24,7 @@ class TestGlobalUnwinder(Unwinder):
         super(TestGlobalUnwinder, self).__init__("global_unwinder")
 
     def __call__(self, unwinder_info):
-        print "%s called" % self.name
+        print("%s called" % self.name)
         return None
 
 class TestProgspaceUnwinder(Unwinder):
@@ -32,7 +32,7 @@ class TestProgspaceUnwinder(Unwinder):
         super(TestProgspaceUnwinder, self).__init__("%s_ps_unwinder" % name)
 
     def __call__(self, unwinder_info):
-        print "%s called" % self.name
+        print("%s called" % self.name)
         return None
 
 class TestObjfileUnwinder(Unwinder):
@@ -40,7 +40,7 @@ class TestObjfileUnwinder(Unwinder):
         super(TestObjfileUnwinder, self).__init__("%s_obj_unwinder" % name)
 
     def __call__(self, unwinder_info):
-        print "%s called" % self.name
+        print("%s called" % self.name)
         return None
 
 
@@ -56,4 +56,4 @@ if not saw_runtime_error:
 gdb.unwinder.register_unwinder(None, TestGlobalUnwinder(), replace=True)
 gdb.unwinder.register_unwinder(gdb.current_progspace(),
                                TestProgspaceUnwinder("py_unwind_maint"))
-print "Python script imported"
+print("Python script imported")
-- 
2.1.4