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Renlin Li 93f4de3929 [BFD][PR21703]Override the new defined symbol with the old normal symbol when --allow-multiple-definition is provided.
The behavior of _bfd_elf_merge_symbol and _bfd_generic_link_add_one_symbol is
inconsistent.

In multiple definition case, _bfd_elf_merge_symbol decided to override the old
symbol definition with the new defintion, (size, type, target data)
In _bfd_generic_link_add_one_symbol, it simply return without doing anything
because of allow-multiple-definition is provided.
This leaves the symbol in a wrong state.

Here, following the documentation, I made this patch to force the old definition
override the new definition if the old symbol is not dynamic or weak.
Because, in those two cases, it's expected to do some merge. I have checked
that, those two cases are properly handled.

bfd/
	PR ld/21703
	* elflink.c (_bfd_elf_merge_symbol): Handle multiple definition case.

ld/

	PR ld/21703
	* testsuite/ld-elf/elf.exp: Run new tests.
	* testsuite/ld-elf/pr21703-1.s: New.
	* testsuite/ld-elf/pr21703-2.s: New.
	* testsuite/ld-elf/pr21703-3.s: New.
	* testsuite/ld-elf/pr21703-4.s: New.
	* testsuite/ld-elf/pr21703-r.sd: New.
	* testsuite/ld-elf/pr21703-shared.sd: New.
	* testsuite/ld-elf/pr21703.sd: New.
	* testsuite/ld-elf/pr21703.ver: New.
2017-10-24 13:01:48 +01:00
bfd [BFD][PR21703]Override the new defined symbol with the old normal symbol when --allow-multiple-definition is provided. 2017-10-24 13:01:48 +01:00
binutils [Visium] Disassemble the operands of the stop instruction. 2017-10-18 16:30:24 +02:00
config
cpu
elfcpp oops - changelog entry omitted from previous delta 2017-09-21 09:07:11 +01:00
etc
gas RISC-V: Don't emit 2-byte NOPs if the C extension is disabled 2017-10-23 18:26:29 -07:00
gdb Reindent gdb.threads/attach-into-signal.exp 2017-10-24 10:55:50 +01:00
gold Fix ChangeLog entry. 2017-10-20 11:21:45 -07:00
gprof Update the Hungarian translation in the gprof directory. 2017-10-05 14:10:27 +01:00
include FT32: support for FT32B processor - part 1 2017-10-12 18:41:29 -07:00
intl
ld [BFD][PR21703]Override the new defined symbol with the old normal symbol when --allow-multiple-definition is provided. 2017-10-24 13:01:48 +01:00
libdecnumber
libiberty Sync libiberty/ & include/ with GCC 2017-09-15 17:40:33 +01:00
opcodes Add missing ChangeLog entries 2017-10-23 13:10:05 -07:00
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sim FT32: support for FT32B processor - part 1 2017-10-12 18:41:29 -07:00
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ChangeLog Add -l option to src-release script. 2017-09-15 16:18:20 +01:00
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src-release.sh Add -l option to src-release script. 2017-09-15 16:18:20 +01:00
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		   README for GNU development tools

This directory contains various GNU compilers, assemblers, linkers, 
debuggers, etc., plus their support routines, definitions, and documentation.

If you are receiving this as part of a GDB release, see the file gdb/README.
If with a binutils release, see binutils/README;  if with a libg++ release,
see libg++/README, etc.  That'll give you info about this
package -- supported targets, how to use it, how to report bugs, etc.

It is now possible to automatically configure and build a variety of
tools with one command.  To build all of the tools contained herein,
run the ``configure'' script here, e.g.:

	./configure 
	make

To install them (by default in /usr/local/bin, /usr/local/lib, etc),
then do:
	make install

(If the configure script can't determine your type of computer, give it
the name as an argument, for instance ``./configure sun4''.  You can
use the script ``config.sub'' to test whether a name is recognized; if
it is, config.sub translates it to a triplet specifying CPU, vendor,
and OS.)

If you have more than one compiler on your system, it is often best to
explicitly set CC in the environment before running configure, and to
also set CC when running make.  For example (assuming sh/bash/ksh):

	CC=gcc ./configure
	make

A similar example using csh:

	setenv CC gcc
	./configure
	make

Much of the code and documentation enclosed is copyright by
the Free Software Foundation, Inc.  See the file COPYING or
COPYING.LIB in the various directories, for a description of the
GNU General Public License terms under which you can copy the files.

REPORTING BUGS: Again, see gdb/README, binutils/README, etc., for info
on where and how to report problems.