2001-02-20 Andreas Jaeger <aj@suse.de>

* elf64-x86-64.c (elf64_x86_64_finish_dynamic_symbol): Don't make
	PLT entries that could serve as a definition for a weak symbol.

bfd/ChangeLog

@@ -1,3 +1,8 @@
+2001-02-20  Andreas Jaeger  <aj@suse.de>
+
+	* elf64-x86-64.c (elf64_x86_64_finish_dynamic_symbol): Don't make
+	PLT entries that could serve as a definition for a weak symbol.
+
 2001-02-19  Jakub Jelinek  <jakub@redhat.com>
 
 	* elf32-sparc.c (elf32_sparc_finish_dynamic_symbol): Don't make PLT

bfd/elf64-x86-64.c

@@ -1656,6 +1656,13 @@ elf64_x86_64_finish_dynamic_symbol (output_bfd, info, h, sym)
 	  /* Mark the symbol as undefined, rather than as defined in
 	     the .plt section.	Leave the value alone.	*/
 	  sym->st_shndx = SHN_UNDEF;
+	  /* If the symbol is weak, we do need to clear the value.
+	     Otherwise, the PLT entry would provide a definition for
+	     the symbol even if the symbol wasn't defined anywhere,
+	     and so the symbol would never be NULL.  */
+	  if ((h->elf_link_hash_flags & ELF_LINK_HASH_REF_REGULAR_NONWEAK)
+	      == 0)
+	    sym->st_value = 0;
 	}
     }