Implement STB_GNU_UNIQUE handling.

Some symbols have to be identified process-wide by their name.  This is
particularly important for some C++ features (e.g., class local static data
and static variables in inline functions).  This cannot completely be
implemented with ELF functionality so far.  The STB_GNU_UNIQUE binding
helps by ensuring the dynamic linker will always use the same definition for
all symbols with the same name and this binding.

1 files changed, 6 insertions, 1 deletions

diff --git a/elf/rtld.c b/elf/rtld.c
index f97de9a..55b84c3 100644
--- a/elf/rtld.c
+++ b/elf/rtld.c
@@ -127,7 +127,12 @@ struct rtld_global _rtld_global =
 #ifdef _LIBC_REENTRANT
     ._dl_load_lock = _RTLD_LOCK_RECURSIVE_INITIALIZER,
 #endif
-    ._dl_nns = 1
+    ._dl_nns = 1,
+    ._dl_ns =
+    {
+      [LM_ID_BASE] = { ._ns_unique_sym_table
+		       = { .lock = _RTLD_LOCK_RECURSIVE_INITIALIZER } }
+    }
   };
 /* If we would use strong_alias here the compiler would see a
    non-hidden definition.  This would undo the effect of the previous