Fix cygwin32 build problem with experimental version of winsup.

	* i386/winnt.c (i386_pe_asm_file_end): Check TREE_SYMBOL_REFERENCED.

From-SVN: r21696

gcc/ChangeLog

+Thu Aug 13 12:53:13 1998  Jim Wilson  <wilson@cygnus.com>
+
+	* i386/winnt.c (i386_pe_asm_file_end): Check TREE_SYMBOL_REFERENCED.
+
 Wed Aug 12 17:25:18 1998  Jeffrey A Law  (law@cygnus.com)
 
 	* mn10300.c (REG_SAVE_BYTES): Only reserve space for registers

gcc/config/i386/winnt.c

@@ -561,7 +561,7 @@ i386_pe_asm_file_end (file)
       decl = get_identifier (p->name);
 
       /* Positively ensure only one declaration for any given symbol.  */
-      if (! TREE_ASM_WRITTEN (decl))
+      if (! TREE_ASM_WRITTEN (decl) && TREE_SYMBOL_REFERENCED (decl))
 	{
 	  TREE_ASM_WRITTEN (decl) = 1;
 	  i386_pe_declare_function_type (file, p->name, TREE_PUBLIC (decl));