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* elflink.h (elf_link_add_object_symbols): Do not resolve a common

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symbol against a STT_FUNC symbol in a shared library.
This commit is contained in:
Ian Lance Taylor
1996-08-11 03:39:46 +00:00
parent f494d50348
commit 4596421b67
2 changed files with 21 additions and 3 deletions
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5
bfd/ChangeLog
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@ -1,3 +1,8 @@
Sat Aug 10 22:59:17 1996 Ian Lance Taylor <ian@cygnus.com>
* elflink.h (elf_link_add_object_symbols): Do not resolve a common
symbol against a STT_FUNC symbol in a shared library.
Fri Aug 9 12:44:57 1996 Ian Lance Taylor <ian@cygnus.com>
* xcofflink.c (xcoff_link_add_dynamic_symbols): If a descriptor

19
bfd/elflink.h
View File

@ -679,17 +679,25 @@ elf_link_add_object_symbols (abfd, info)
by some other object. If it has, we want to use the
existing definition, and we do not want to report a
multiple symbol definition error; we do this by
clobbering sec to be bfd_und_section_ptr. */
clobbering sec to be bfd_und_section_ptr. We treat a
common symbol as a definition if the symbol in the shared
library is a function, since common symbols always
represent variables; this can cause confusion in
principle, but any such confusion would seem to indicate
an erroneous program or shared library. */
if (dynamic && definition)
{
if (h->root.type == bfd_link_hash_defined
|| h->root.type == bfd_link_hash_defweak
|| (h->root.type == bfd_link_hash_common
&& bind == STB_WEAK))
&& (bind == STB_WEAK
|| ELF_ST_TYPE (sym.st_info) == STT_FUNC)))
{
sec = bfd_und_section_ptr;
definition = false;
size_change_ok = true;
if (h->root.type == bfd_link_hash_common)
type_change_ok = true;
}
}
@ -700,7 +708,10 @@ elf_link_add_object_symbols (abfd, info)
objects, even if they are defined after the dynamic
object in the link. */
if (! dynamic
&& definition
&& (definition
|| (bfd_is_com_section (sec)
&& (h->root.type == bfd_link_hash_defweak
|| h->type == STT_FUNC)))
&& (h->root.type == bfd_link_hash_defined
|| h->root.type == bfd_link_hash_defweak)
&& (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_DYNAMIC) != 0
@ -715,6 +726,8 @@ elf_link_add_object_symbols (abfd, info)
h->root.type = bfd_link_hash_undefined;
h->root.u.undef.abfd = h->root.u.def.section->owner;
size_change_ok = true;
if (bfd_is_com_section (sec))
type_change_ok = true;
}
}