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authorIan Lance Taylor <ian@airs.com>1999-07-07 15:29:06 +0000
committerIan Lance Taylor <ian@airs.com>1999-07-07 15:29:06 +0000
commitb4536acd1f4486d65cedf50e2d8f64227869acbc (patch)
tree77a2de80dc74738da0ba2591e4a20436a555e487 /bfd/elflink.h
parent3b62fea85c5fc00336c311a81446121cb0e562f6 (diff)
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tweak last elf_merge_symbol patch
Diffstat (limited to 'bfd/elflink.h')
-rw-r--r--bfd/elflink.h25
1 files changed, 21 insertions, 4 deletions
diff --git a/bfd/elflink.h b/bfd/elflink.h
index 91b7b67..c2debca 100644
--- a/bfd/elflink.h
+++ b/bfd/elflink.h
@@ -366,6 +366,13 @@ elf_merge_symbol (abfd, info, name, sym, psec, pvalue, sym_hash,
break;
}
+ /* In cases involving weak versioned symbols, we may wind up trying
+ to merge a symbol with itself. Catch that here, to avoid the
+ confusion that results if we try to override a symbol with
+ itself. */
+ if (abfd == oldbfd)
+ return true;
+
/* NEWDYN and OLDDYN indicate whether the new or old symbol,
respectively, is from a dynamic object. */
@@ -638,15 +645,25 @@ elf_merge_symbol (abfd, info, name, sym, psec, pvalue, sym_hash,
/* Handle the special case of a weak definition in a regular object
followed by a non-weak definition in a shared object. In this
- case, we prefer the definition in the shared object. To make
- this work we have to frob the flags. */
+ case, we prefer the definition in the shared object. */
if (olddef
- && ! olddyn
&& h->root.type == bfd_link_hash_defweak
&& newdef
&& newdyn
&& bind != STB_WEAK)
- h->elf_link_hash_flags &= ~ ELF_LINK_HASH_DEF_REGULAR;
+ {
+ /* To make this work we have to frob the flags so that the rest
+ of the code does not think we are using the regular
+ definition. */
+ h->elf_link_hash_flags &= ~ ELF_LINK_HASH_DEF_REGULAR;
+ h->elf_link_hash_flags |= ELF_LINK_HASH_REF_REGULAR;
+
+ /* If H is the target of an indirection, we want the caller to
+ use H rather than the indirect symbol. Otherwise if we are
+ defining a new indirect symbol we will wind up attaching it
+ to the entry we are overriding. */
+ *sym_hash = h;
+ }
/* Handle the special case of a non-weak definition in a shared
object followed by a weak definition in a regular object. In