use weak symbols for the POSIX functions that will be used by C threads

The intent of this is to avoid name space pollution of the C threads
implementation.

This has two sides to it. First we have to provide symbols that wouldn't
pollute the name space for the C threads implementation. Second we have
to clean up some internal uses of POSIX functions such that they don't
implicitly drag in such symbols.

1 files changed, 5 insertions, 2 deletions

diff --git a/src/thread/pthread_key_create.c b/src/thread/pthread_key_create.c
index a9187f7b..bfcd5976 100644
--- a/src/thread/pthread_key_create.c
+++ b/src/thread/pthread_key_create.c
@@ -9,7 +9,7 @@ static void nodtor(void *dummy)
 {
 }
 
-int pthread_key_create(pthread_key_t *k, void (*dtor)(void *))
+int __pthread_key_create(pthread_key_t *k, void (*dtor)(void *))
 {
 	unsigned i = (uintptr_t)&k / 16 % PTHREAD_KEYS_MAX;
 	unsigned j = i;
@@ -31,7 +31,7 @@ int pthread_key_create(pthread_key_t *k, void (*dtor)(void *))
 	return EAGAIN;
 }
 
-int pthread_key_delete(pthread_key_t k)
+int __pthread_key_delete(pthread_key_t k)
 {
 	keys[k] = 0;
 	return 0;
@@ -53,3 +53,6 @@ void __pthread_tsd_run_dtors()
 		}
 	}
 }
+
+weak_alias(__pthread_key_delete, pthread_key_delete);
+weak_alias(__pthread_key_create, pthread_key_create);