Add compatibility symbol maps. libpthread (.so.1 and .so.2)

used LIBTHREAD_1_0 as its version definition, but now needs
to define its symbols in the same namespace used by libc.
The compatibility hooks allows you to use libraries and
binaries built and linked to libpthread before libc was
built with symbol versioning.  The shims can be removed if
libpthread is given a version bump.

Reviewed by:	davidxu

1 files changed, 17 insertions, 1 deletions

diff --git a/lib/libpthread/thread/thr_spec.c b/lib/libpthread/thread/thr_spec.c
index 6c2b636..f6e8861 100644
--- a/lib/libpthread/thread/thr_spec.c
+++ b/lib/libpthread/thread/thr_spec.c
@@ -36,11 +36,27 @@
 #include <string.h>
 #include <errno.h>
 #include <pthread.h>
+
 #include "thr_private.h"
 
-/* Static variables: */
+
 struct pthread_key _thread_keytable[PTHREAD_KEYS_MAX];
 
+/*
+ * XXX - This breaks the linker if LT10_COMPAT_DEFAULT doesn't
+ * also include a weak reference to the default symbol.
+ */
+LT10_COMPAT_PRIVATE(_thread_keytable);
+
+LT10_COMPAT_PRIVATE(_pthread_key_create);
+LT10_COMPAT_DEFAULT(pthread_key_create);
+LT10_COMPAT_PRIVATE(_pthread_key_delete);
+LT10_COMPAT_DEFAULT(pthread_key_delete);
+LT10_COMPAT_PRIVATE(_pthread_getspecific);
+LT10_COMPAT_DEFAULT(pthread_getspecific);
+LT10_COMPAT_PRIVATE(_pthread_setspecific);
+LT10_COMPAT_DEFAULT(pthread_setspecific);
+
 __weak_reference(_pthread_key_create, pthread_key_create);
 __weak_reference(_pthread_key_delete, pthread_key_delete);
 __weak_reference(_pthread_getspecific, pthread_getspecific);