3 files changed, 8 insertions, 6 deletions
diff --git a/src/internal/libc.h b/src/internal/libc.h
index 906de2ca..929ff97a 100644
--- a/src/internal/libc.h
+++ b/src/internal/libc.h
@@ -38,7 +38,8 @@ extern struct __libc *__libc_loc(void) __attribute__((const));
 
 /* Designed to avoid any overhead in non-threaded processes */
 void __lock(volatile int *);
-void __lockfile(FILE *);
+int __lockfile(FILE *);
+void __unlockfile(FILE *);
 #define LOCK(x) (libc.threads_minus_1 ? (__lock(x),1) : ((void)(x),1))
 #define UNLOCK(x) (*(volatile int *)(x)=0)
 
diff --git a/src/internal/pthread_impl.h b/src/internal/pthread_impl.h
index e6089f02..03af4c12 100644
--- a/src/internal/pthread_impl.h
+++ b/src/internal/pthread_impl.h
@@ -87,6 +87,8 @@ struct __timer {
 #define SIGTIMER_SET ((sigset_t *)(unsigned long [1+(sizeof(long)==4)]){ \
 	 0x80000000 })
 
+pthread_t __pthread_self_init(void);
+
 int __set_thread_area(void *);
 int __libc_sigaction(int, const struct sigaction *, struct sigaction *);
 int __libc_sigprocmask(int, const sigset_t *, sigset_t *);
diff --git a/src/internal/stdio_impl.h b/src/internal/stdio_impl.h
index 76b58be9..c5f45eb1 100644
--- a/src/internal/stdio_impl.h
+++ b/src/internal/stdio_impl.h
@@ -24,8 +24,8 @@
 
 #define UNGET 8
 
-#define FLOCK(f) ((libc.threads_minus_1 && (f)->lock>=0) ? (__lockfile((f)),0) : 0)
-#define FUNLOCK(f) ((f)->lockcount && (--(f)->lockcount || ((f)->lock=0)))
+#define FLOCK(f) int __need_unlock = ((f)->lock>=0 ? __lockfile((f)) : 0)
+#define FUNLOCK(f) if (__need_unlock) __unlockfile((f)); else
 
 #define F_PERM 1
 #define F_NORD 4
@@ -49,12 +49,12 @@ struct __FILE_s {
 	FILE *prev, *next;
 	int fd;
 	int pipe_pid;
-	long dummy2;
+	long lockcount;
 	short dummy3;
 	signed char mode;
 	signed char lbf;
 	int lock;
-	int lockcount;
+	int waiters;
 	void *cookie;
 	off_t off;
 	int (*flush)(FILE *);
@@ -86,7 +86,6 @@ FILE *__fdopen(int, const char *);
 
 #define OFLLOCK() LOCK(&libc.ofl_lock)
 #define OFLUNLOCK() UNLOCK(&libc.ofl_lock)
-#define ofl_head (libc.ofl_head)
 
 #define feof(f) ((f)->flags & F_EOF)
 #define ferror(f) ((f)->flags & F_ERR)