Clarify when the use of G_STATIC_ASSERT is valid and fix up an invalid
use of it in GDBus.
The G_STATIC_ASSERT macro lets the programmer check a condition at compile time,
the condition needs to be compile time computable.
The macro can be used in any place where a <literal>typedef</literal> is valid.
+</para>
+<note><para>
+A <literal>typedef</literal> is generally allowed in exactly the same
+places that a variable declaration is allowed. For this reason, you should not use <literal>G_STATIC_ASSERT</literal> in the middle of blocks of code.
+</para></note>
+<para>
The macro should only be used once per source code line.
</para>
{
guint64 v;
gdouble *encoded;
+ G_STATIC_ASSERT (sizeof (gdouble) == sizeof (guint64));
v = g_data_input_stream_read_uint64 (dis, NULL, &local_error);
if (local_error != NULL)
goto fail;
- G_STATIC_ASSERT (sizeof (gdouble) == sizeof (guint64));
encoded = (gdouble *) &v;
ret = g_variant_new_double (*encoded);
}