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authorH.J. Lu <hjl.tools@gmail.com>2016-03-08 05:28:55 -0800
committerH.J. Lu <hjl.tools@gmail.com>2016-03-08 05:30:51 -0800
commit202ac193bbbecc96a4978d1ac3d17148253f9b01 (patch)
tree8c2f92edb7397be31f6d8a0b71f5e9b2a84254e3 /bfd
parent72f3b6aae734d8cdcded38aca94e379848bec7ef (diff)
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Group common symbol checking together
PR ld/19579 * elflink.c (_bfd_elf_merge_symbol): Group common symbol checking together.
Diffstat (limited to 'bfd')
-rw-r--r--bfd/ChangeLog6
-rw-r--r--bfd/elflink.c12
2 files changed, 12 insertions, 6 deletions
diff --git a/bfd/ChangeLog b/bfd/ChangeLog
index 2b6cf15..c3b9132 100644
--- a/bfd/ChangeLog
+++ b/bfd/ChangeLog
@@ -1,3 +1,9 @@
+2016-03-08 H.J. Lu <hongjiu.lu@intel.com>
+
+ PR ld/19579
+ * elflink.c (_bfd_elf_merge_symbol): Group common symbol checking
+ together.
+
2016-03-08 Cupertino Miranda <Cupertino.Miranda@synopsys.com>
Andrew Burgess <andrew.burgess@embecosm.com>
diff --git a/bfd/elflink.c b/bfd/elflink.c
index 39157bf..ccff780 100644
--- a/bfd/elflink.c
+++ b/bfd/elflink.c
@@ -1172,12 +1172,9 @@ _bfd_elf_merge_symbol (bfd *abfd,
newdef = !bfd_is_und_section (sec) && !bfd_is_com_section (sec);
- /* The old common symbol in executable is a definition if the new
- definition comes from a shared library. */
olddef = (h->root.type != bfd_link_hash_undefined
&& h->root.type != bfd_link_hash_undefweak
- && (h->root.type != bfd_link_hash_common
- || (!olddyn && newdyn && bfd_link_executable (info))));
+ && h->root.type != bfd_link_hash_common);
/* NEWFUNC and OLDFUNC indicate whether the new or old symbol,
respectively, appear to be a function. */
@@ -1489,13 +1486,16 @@ _bfd_elf_merge_symbol (bfd *abfd,
represent variables; this can cause confusion in principle, but
any such confusion would seem to indicate an erroneous program or
shared library. We also permit a common symbol in a regular
- object to override a weak symbol in a shared object. */
+ object to override a weak symbol in a shared object. A common
+ symbol in executable also overrides a symbol in a shared object. */
if (newdyn
&& newdef
&& (olddef
|| (h->root.type == bfd_link_hash_common
- && (newweak || newfunc))))
+ && (newweak
+ || newfunc
+ || (!olddyn && bfd_link_executable (info))))))
{
*override = TRUE;
newdef = FALSE;