Index: uspace/app/taskdump/include/elf_core.h
===================================================================
--- uspace/app/taskdump/include/elf_core.h	(revision 8d2dd7f2d52fbc7693f94b66e451eeff3756d061)
+++ uspace/app/taskdump/include/elf_core.h	(revision 50f19b7ee8e94570b5c63896736c4eb49cfa18db)
@@ -40,5 +40,5 @@
 #include <libarch/istate.h>
 
-extern int elf_core_save(const char *, as_area_info_t *, unsigned int,
+extern errno_t elf_core_save(const char *, as_area_info_t *, unsigned int,
     async_sess_t *, istate_t *);
 
Index: uspace/app/taskdump/include/fibrildump.h
===================================================================
--- uspace/app/taskdump/include/fibrildump.h	(revision 8d2dd7f2d52fbc7693f94b66e451eeff3756d061)
+++ uspace/app/taskdump/include/fibrildump.h	(revision 50f19b7ee8e94570b5c63896736c4eb49cfa18db)
@@ -40,5 +40,5 @@
 #include <symtab.h>
 
-extern int fibrils_dump(symtab_t *, async_sess_t *sess);
+extern errno_t fibrils_dump(symtab_t *, async_sess_t *sess);
 
 #endif
Index: uspace/app/taskdump/include/symtab.h
===================================================================
--- uspace/app/taskdump/include/symtab.h	(revision 8d2dd7f2d52fbc7693f94b66e451eeff3756d061)
+++ uspace/app/taskdump/include/symtab.h	(revision 50f19b7ee8e94570b5c63896736c4eb49cfa18db)
@@ -48,8 +48,8 @@
 } symtab_t;
 
-extern int symtab_load(const char *file_name, symtab_t **symtab);
+extern errno_t symtab_load(const char *file_name, symtab_t **symtab);
 extern void symtab_delete(symtab_t *st);
-extern int symtab_name_to_addr(symtab_t *st, const char *name, uintptr_t *addr);
-extern int symtab_addr_to_name(symtab_t *symtab, uintptr_t addr, char **name,
+extern errno_t symtab_name_to_addr(symtab_t *st, const char *name, uintptr_t *addr);
+extern errno_t symtab_addr_to_name(symtab_t *symtab, uintptr_t addr, char **name,
     size_t *offs);
 
Index: uspace/app/taskdump/include/taskdump.h
===================================================================
--- uspace/app/taskdump/include/taskdump.h	(revision 8d2dd7f2d52fbc7693f94b66e451eeff3756d061)
+++ uspace/app/taskdump/include/taskdump.h	(revision 50f19b7ee8e94570b5c63896736c4eb49cfa18db)
@@ -39,5 +39,5 @@
 #include <stdint.h>
 
-extern int td_stacktrace(uintptr_t, uintptr_t);
+extern errno_t td_stacktrace(uintptr_t, uintptr_t);
 
 #endif