[mutex] Try work around GCC cast-align error/warning
Shouldn't be needed because of the alignas(). Oh well...
Might fix https://github.com/harfbuzz/harfbuzz/issues/3283
diff --git a/src/hb-mutex.hh b/src/hb-mutex.hh
index 4e13502..6914b22 100644
--- a/src/hb-mutex.hh
+++ b/src/hb-mutex.hh
@@ -97,10 +97,13 @@
/* Create space for, but do not initialize m. */
alignas(hb_mutex_impl_t) char m[sizeof (hb_mutex_impl_t)];
+#pragma GCC diagnostic push
+#pragma GCC diagnostic ignored "-Wcast-align"
void init () { hb_mutex_impl_init ((hb_mutex_impl_t *) m); }
void lock () { hb_mutex_impl_lock ((hb_mutex_impl_t *) m); }
void unlock () { hb_mutex_impl_unlock ((hb_mutex_impl_t *) m); }
void fini () { hb_mutex_impl_finish ((hb_mutex_impl_t *) m); }
+#pragma GCC diagnostic pop
};
struct hb_lock_t
