use weak aliases rather than function pointers to simplify some code

[musl] / src / thread / pthread_atfork.c

diff --git a/src/thread/pthread_atfork.c b/src/thread/pthread_atfork.c
index 0773dc8..a7a8201 100644 (file)
--- a/src/thread/pthread_atfork.c
+++ b/src/thread/pthread_atfork.c
@@ -10,9 +10,10 @@ static struct atfork_funcs {
 
 static int lock;
 
-static void fork_handler(int who)
+void __fork_handler(int who)
 {
        struct atfork_funcs *p;
+       if (!funcs) return;
        if (who < 0) {
                LOCK(&lock);
                for (p=funcs; p; p = p->next) {
@@ -35,7 +36,6 @@ int pthread_atfork(void (*prepare)(void), void (*parent)(void), void (*child)(vo
        if (!new) return -1;
 
        LOCK(&lock);
-       libc.fork_handler = fork_handler;
        new->next = funcs;
        new->prev = 0;
        new->prepare = prepare;