Fix "ISO C forbids initialization between function pointer and ‘void *’" warnings.

Fix crash when plugins have no required or optional features.


git-svn-id: http://svn.drobilla.net/lad/trunk/slv2@2908 a436a847-0d15-0410-975c-d299462d15a1

1 files changed, 12 insertions, 0 deletions

diff --git a/src/slv2_internal.h b/src/slv2_internal.h
index 1c87a5e..2691c5d 100644
--- a/src/slv2_internal.h
+++ b/src/slv2_internal.h
@@ -30,6 +30,7 @@ extern "C" {
 #include <stdint.h>
 #include <stdlib.h>
 #include <inttypes.h>
+#include <dlfcn.h>
 #include <glib.h>
 #include "serd/serd.h"
 #include "sord/sord.h"
@@ -322,6 +323,17 @@ char*       slv2_strjoin(const char* first, ...);
 const char* slv2_get_lang();
 uint8_t*    slv2_qname_expand(SLV2Plugin p, const char* qname);
 
+typedef void (*VoidFunc)();
+
+/** dlsym wrapper to return a function pointer (without annoying warning) */
+static inline VoidFunc
+slv2_dlfunc(void* handle, const char* symbol)
+{
+	typedef VoidFunc (*VoidFuncGetter)(void*, const char*);
+	VoidFuncGetter dlfunc = (VoidFuncGetter)dlsym;
+	return dlfunc(handle, symbol);
+}
+
 /* ********* Dynamic Manifest ********* */
 #ifdef SLV2_DYN_MANIFEST
 static const LV2_Feature* const dman_features = { NULL };