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authorIan Lance Taylor <ian@airs.com>1998-12-02 05:59:07 +0000
committerIan Lance Taylor <ian@airs.com>1998-12-02 05:59:07 +0000
commit3ac83be0c79829d59dbf4cd4c2bcd39048949524 (patch)
treea9e85b4c25cc67cbc9606ec4c06af576e29688ca /bfd
parent156eb5bc469465c2a228a5b5fbf65368beda1f37 (diff)
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* elflink.h (elf_adjust_dynamic_symbol): Warn on an attempt to
link against a dynamic symbol with no type or size.
Diffstat (limited to 'bfd')
-rw-r--r--bfd/elflink.h12
1 files changed, 12 insertions, 0 deletions
diff --git a/bfd/elflink.h b/bfd/elflink.h
index 40f45a0..841a8e7 100644
--- a/bfd/elflink.h
+++ b/bfd/elflink.h
@@ -3119,6 +3119,18 @@ elf_adjust_dynamic_symbol (h, data)
}
}
+ /* If a symbol has no type and no size and does not require a PLT
+ entry, then we are probably about to do the wrong thing here: we
+ are probably going to create a COPY reloc for an empty object.
+ This case can arise when a shared object is built with assembly
+ code, and the assembly code fails to set the symbol type. */
+ if (h->size == 0
+ && h->type == STT_NOTYPE
+ && (h->elf_link_hash_flags & ELF_LINK_HASH_NEEDS_PLT) == 0)
+ (*_bfd_error_handler)
+ (_("warning: type and size of dynamic symbol `%s' are not defined"),
+ h->root.root.string);
+
dynobj = elf_hash_table (eif->info)->dynobj;
bed = get_elf_backend_data (dynobj);
if (! (*bed->elf_backend_adjust_dynamic_symbol) (eif->info, h))