Index: uspace/lib/c/include/task.h
===================================================================
--- uspace/lib/c/include/task.h	(revision 9a426d1f629f275455938b21d553365bb5146fb0)
+++ uspace/lib/c/include/task.h	(revision efdfebc372ac1a93545f90450c8e1fe0aa789daf)
@@ -38,4 +38,5 @@
 #include <sys/types.h>
 #include <abi/proc/task.h>
+#include <stdarg.h>
 
 typedef enum {
@@ -48,8 +49,8 @@
 extern int task_kill(task_id_t);
 
-extern task_id_t task_spawn(const char *, const char *const[], int *);
 extern int task_spawnv(task_id_t *, const char *path, const char *const []);
 extern int task_spawnvf(task_id_t *, const char *path, const char *const [],
     int *const []);
+extern int task_spawn(task_id_t *, const char *path, int, va_list ap);
 extern int task_spawnl(task_id_t *, const char *path, ...);