[PATCH] py-breakpoint: Don't use the 'p' PyArg_ParseTupleAndKeywords format specifier

[Simon Marchi <simon dot marchi at ericsson dot com>]

In Python 3, the 'p' format specifier can be passed to
PyArg_ParseTupleAndKeywords to test the argument for truth and convert
it to a boolean value (the p stands for predicate).  However, it is not
available in Python 2, causing this error:

  Traceback (most recent call last):
    File "test.py", line 1, in <module>
      b1 = gdb.Breakpoint("foo", qualified=False)
  TypeError: argument 10 (impossible<bad format char>)

This patch changes it to the 'O' specifier, which returns the Python
object passed in without transformation, and uses PyObject_IsTrue on it.
This is what is done for the other boolean parameters of this function
(internal and temporary).

This fixes the test gdb.python/py-breakpoint.exp for Python 2.

gdb/ChangeLog:

	* python/py-breakpoint.c (bppy_init): Use 'O' format specifier
	for "qualified" and use PyObject_IsTrue.
---
 gdb/python/py-breakpoint.c | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/gdb/python/py-breakpoint.c b/gdb/python/py-breakpoint.c
index ce680c4..05291b5 100644
--- a/gdb/python/py-breakpoint.c
+++ b/gdb/python/py-breakpoint.c
@@ -707,9 +707,9 @@ bppy_init (PyObject *self, PyObject *args, PyObject *kwargs)
   char *label = NULL;
   char *source = NULL;
   char *function = NULL;
-  int qualified = 0;
+  PyObject * qualified = NULL;
 
-  if (!gdb_PyArg_ParseTupleAndKeywords (args, kwargs, "|siiOOsssOp", keywords,
+  if (!gdb_PyArg_ParseTupleAndKeywords (args, kwargs, "|siiOOsssOO", keywords,
 					&spec, &type, &access_type,
 					&internal,
 					&temporary, &source,
@@ -762,7 +762,7 @@ bppy_init (PyObject *self, PyObject *args, PyObject *kwargs)
 	  {
 	    event_location_up location;
 	    symbol_name_match_type func_name_match_type
-	      = (qualified
+	      = (qualified != NULL && PyObject_IsTrue (qualified)
 		  ? symbol_name_match_type::FULL
 		  : symbol_name_match_type::WILD);
 
-- 
2.7.4