[python] [patch] PR 13624

[Phil Muldoon <pmuldoon@redhat.com>]

The patch address PR 13624 which noted that in some instances we were
not catching GDB exceptions.  I checked every function and I found two
GDB cases, and one Python case.

OK?

Cheers,

Phil

--

2011-10-06  Phil Muldoon  <pmuldoon@redhat.com>

	* python/py-value.c (valpy_call): Check that arguments are
	a tuple.
	(valpy_nonzero): Catch GDB exceptions.
	(valpy_absolute): Ditto.
--

diff --git a/gdb/python/py-value.c b/gdb/python/py-value.c
index 252d9b9..48bbb0a 100644
--- a/gdb/python/py-value.c
+++ b/gdb/python/py-value.c
@@ -519,6 +519,13 @@ valpy_call (PyObject *self, PyObject *args, PyObject *keywords)
       return NULL;
     }
 
+  if (! PyTuple_Check (args))
+    {
+      PyErr_SetString (PyExc_RuntimeError,
+		       _("Inferior arguments must be provided in a tuple."));
+      return NULL;
+    }
+
   args_count = PyTuple_Size (args);
   if (args_count > 0)
     {
@@ -792,33 +799,53 @@ static PyObject *
 valpy_absolute (PyObject *self)
 {
   struct value *value = ((value_object *) self)->value;
+  volatile struct gdb_exception except;
+  int isabs = 1;
 
-  if (value_less (value, value_zero (value_type (value), not_lval)))
-    return valpy_negative (self);
-  else
+  TRY_CATCH (except, RETURN_MASK_ALL)
+    {
+      if (value_less (value, value_zero (value_type (value), not_lval)))
+	isabs = 0;
+    }
+  GDB_PY_HANDLE_EXCEPTION (except);
+
+  if (isabs)
     return valpy_positive (self);
+  else
+    return valpy_negative (self);
 }
 
 /* Implements boolean evaluation of gdb.Value.  */
 static int
 valpy_nonzero (PyObject *self)
 {
+  volatile struct gdb_exception except;
   value_object *self_value = (value_object *) self;
   struct type *type;
+  int nonzero = 0; /* Appease GCC warning.  */
 
   type = check_typedef (value_type (self_value->value));
 
-  if (is_integral_type (type) || TYPE_CODE (type) == TYPE_CODE_PTR)
-    return !!value_as_long (self_value->value);
-  else if (TYPE_CODE (type) == TYPE_CODE_FLT)
-    return value_as_double (self_value->value) != 0;
-  else if (TYPE_CODE (type) == TYPE_CODE_DECFLOAT)
-    return !decimal_is_zero (value_contents (self_value->value),
-			     TYPE_LENGTH (type),
-			     gdbarch_byte_order (get_type_arch (type)));
-  else
-    /* All other values are True.  */
-    return 1;
+  TRY_CATCH (except, RETURN_MASK_ALL)
+    {
+      if (is_integral_type (type) || TYPE_CODE (type) == TYPE_CODE_PTR)
+	nonzero = !!value_as_long (self_value->value);
+      else if (TYPE_CODE (type) == TYPE_CODE_FLT)
+	nonzero = value_as_double (self_value->value) != 0;
+      else if (TYPE_CODE (type) == TYPE_CODE_DECFLOAT)
+	nonzero = !decimal_is_zero (value_contents (self_value->value),
+				 TYPE_LENGTH (type),
+				 gdbarch_byte_order (get_type_arch (type)));
+      else
+	/* All other values are True.  */
+	nonzero = 1;
+    }
+  /* This is not documented in the Python documentation, but if this
+     function fails, return -1 as slot_nb_nonzero does (the default
+     Python nonzero function).  */
+  GDB_PY_SET_HANDLE_EXCEPTION (except);
+
+  return nonzero;
 }
 
 /* Implements ~ for value objects.  */