Make more warnings go away on the SGI compiler.

This is part of SF patch #424992.

Modules/pcremodule.c

@@ -258,7 +258,6 @@ PyPcre_expand_escape(unsigned char *pattern, int pattern_len,
 		*indexptr = end;
 		return Py_BuildValue("c", (char)x);
 	}
-	break;
 
 	case('E'):    case('G'):    case('L'):    case('Q'):
 	case('U'):    case('l'):    case('u'):
@@ -331,7 +330,6 @@ PyPcre_expand_escape(unsigned char *pattern, int pattern_len,
 		/* Otherwise, return a string containing the group name */
 		return Py_BuildValue("s#", pattern+index, end-index);
 	}
-	break;
 
 	case('0'):
 	{
@@ -354,7 +352,7 @@ PyPcre_expand_escape(unsigned char *pattern, int pattern_len,
 		*indexptr = i;
 		return Py_BuildValue("c", (unsigned char)octval);
 	}
-	break;
+
 	case('1'):    case('2'):    case('3'):    case('4'):
 	case('5'):    case('6'):    case('7'):    case('8'):
 	case('9'):
@@ -410,7 +408,6 @@ PyPcre_expand_escape(unsigned char *pattern, int pattern_len,
 			return Py_BuildValue("i", pattern[index]-'0');
 		}
 	}
-	break;
 
 	default:
 	  /* It's some unknown escape like \s, so return a string containing

Modules/selectmodule.c

@@ -332,7 +332,7 @@ staticforward PyTypeObject poll_Type;
 static int
 update_ufd_array(pollObject *self)
 {
-	int i, j, pos;
+	int i, pos;
 	PyObject *key, *value;
 
 	self->ufd_len = PyDict_Size(self->dict);
@@ -343,9 +343,9 @@ update_ufd_array(pollObject *self)
 	}
 
 	i = pos = 0;
-	while ((j = PyDict_Next(self->dict, &pos, &key, &value))) {
+	while (PyDict_Next(self->dict, &pos, &key, &value)) {
 		self->ufds[i].fd = PyInt_AsLong(key);
-		self->ufds[i].events = PyInt_AsLong(value);
+		self->ufds[i].events = (short)PyInt_AsLong(value);
 		i++;
 	}
 	self->ufd_uptodate = 1;

Modules/signalmodule.c

@@ -156,7 +156,7 @@ signal_alarm(PyObject *self, PyObject *args)
 	if (!PyArg_Parse(args, "i", &t))
 		return NULL;
 	/* alarm() returns the number of seconds remaining */
-	return PyInt_FromLong(alarm(t));
+	return PyInt_FromLong((long)alarm(t));
 }
 
 static char alarm_doc[] =

Modules/xreadlinesmodule.c

@@ -171,8 +171,6 @@ static PyMethodDef xreadlines_functions[] = {
 DL_EXPORT(void)
 initxreadlines(void)
 {
-	PyObject *m;
-
 	XReadlinesObject_Type.ob_type = &PyType_Type;
-	m = Py_InitModule("xreadlines", xreadlines_functions);
+	Py_InitModule("xreadlines", xreadlines_functions);
 }