build: use -Wconversion -Wno-sign-conversion. Fixes #191

In some cases changing the type used was enough, in some others I just force
casted things as too many changes would be required and overflow unlikely
(for array marshalling the cache uses gssize while the marshalling code uses
garray and thus guint)

My hope is that having this enabled will improve things gradually with
future cleanups.

1 files changed, 11 insertions, 7 deletions

diff --git a/gi/pygi-source.c b/gi/pygi-source.c
index d09849f0..b49b7d58 100644
--- a/gi/pygi-source.c
+++ b/gi/pygi-source.c
@@ -27,6 +27,7 @@
 #include "pygi-info.h"
 #include "pygi-boxed.h"
 #include "pygi-type.h"
+#include "pygi-basictype.h"
 #include "pygboxed.h"
 #include "pygi-source.h"
 
@@ -65,13 +66,16 @@ pyg_source_prepare(GSource *source, gint *timeout)
 	goto bail;
     }
 
-    ret = PyObject_IsTrue(PyTuple_GET_ITEM(t, 0));
-	*timeout = PYGLIB_PyLong_AsLong(PyTuple_GET_ITEM(t, 1));
+    if (!pygi_gboolean_from_py (PyTuple_GET_ITEM(t, 0), &ret)) {
+        ret = FALSE;
+        goto bail;
+    }
 
-	if (*timeout == -1 && PyErr_Occurred()) {
-	    ret = FALSE;
-	    goto bail;
-	}
+    if (!pygi_gint_from_py (PyTuple_GET_ITEM(t, 1), timeout))
+    {
+        ret = FALSE;
+        goto bail;
+    }
 
     got_err = FALSE;
 
@@ -229,7 +233,7 @@ PyObject *
 pyg_source_set_callback(PyGObject *self_module, PyObject *args)
 {
     PyObject *self, *first, *callback, *cbargs = NULL, *data;
-    gint len;
+    Py_ssize_t len;
 
     len = PyTuple_Size (args);
     if (len < 2) {