don't let mudflap register global symbols that won't be emitted

From: Alexandre Oliva <aoliva@redhat.com>

for  gcc/ChangeLog

	PR libmudflap/53359
	* tree-mudflap.c (mudflap_finish_file): Skip deferred decls
	not found in the symtab.
---

 gcc/tree-mudflap.c |    4 ++++
 1 files changed, 4 insertions(+), 0 deletions(-)


diff --git a/gcc/tree-mudflap.c b/gcc/tree-mudflap.c
index 90d0448..a9caaf2 100644
--- a/gcc/tree-mudflap.c
+++ b/gcc/tree-mudflap.c
@@ -1335,6 +1335,10 @@ mudflap_finish_file (void)
           if (! TREE_PUBLIC (obj) && ! TREE_ADDRESSABLE (obj))
             continue;
 
+	  /* If we're not emitting the symbol, don't register it.  */
+	  if (!symtab_get_node (obj))
+	    continue;
+
           if (! COMPLETE_TYPE_P (TREE_TYPE (obj)))
             {
               warning (OPT_Wmudflap,