[Bug ld/21306] Different behavior when linking common symbol statically or to shared object
https://sourceware.org/bugzilla/show_bug.cgi?id=21306 Alan Modra changed: What|Removed |Added Status|RESOLVED|REOPENED Resolution|DUPLICATE |--- --- Comment #3 from Alan Modra --- This isn't a dup. This bug is reporting a regression introduced by the fix for bug 19579. -- You are receiving this mail because: You are on the CC list for the bug. ___ bug-binutils mailing list bug-binutils@gnu.org https://lists.gnu.org/mailman/listinfo/bug-binutils
[Bug binutils/21233] Internal error, /usr/bin/ld: BFD (GNU Binutils for Debian) 2.28 assertion fail ../../bfd/elfxx-mips.c:3861
https://sourceware.org/bugzilla/show_bug.cgi?id=21233 --- Comment #20 from cvs-commit at gcc dot gnu.org --- The master branch has been updated by Hans-Peter Nilsson : https://sourceware.org/git/gitweb.cgi?p=binutils-gdb.git;h=6ca30fa5613cfa935834f27114d6db4f3854a13e commit 6ca30fa5613cfa935834f27114d6db4f3854a13e Author: Hans-Peter Nilsson Date: Wed Apr 5 23:12:16 2017 +0200 PR ld/21233: change xfails to kfails, fix the indentation issue -- You are receiving this mail because: You are on the CC list for the bug. ___ bug-binutils mailing list bug-binutils@gnu.org https://lists.gnu.org/mailman/listinfo/bug-binutils
[Bug ld/21306] Different behavior when linking common symbol statically or to shared object
https://sourceware.org/bugzilla/show_bug.cgi?id=21306 Bug 21306 depends on bug 19579, which changed state. Bug 19579 Summary: [Regression] link error linking fortran code with PIE https://sourceware.org/bugzilla/show_bug.cgi?id=19579 What|Removed |Added Status|RESOLVED|REOPENED Resolution|FIXED |--- -- You are receiving this mail because: You are on the CC list for the bug. ___ bug-binutils mailing list bug-binutils@gnu.org https://lists.gnu.org/mailman/listinfo/bug-binutils
[Bug ld/19579] [Regression] link error linking fortran code with PIE
https://sourceware.org/bugzilla/show_bug.cgi?id=19579 H.J. Lu changed: What|Removed |Added CC||eric.schweitz at pgroup dot com --- Comment #20 from H.J. Lu --- *** Bug 21306 has been marked as a duplicate of this bug. *** -- You are receiving this mail because: You are on the CC list for the bug. ___ bug-binutils mailing list bug-binutils@gnu.org https://lists.gnu.org/mailman/listinfo/bug-binutils
[Bug ld/21306] Different behavior when linking common symbol statically or to shared object
https://sourceware.org/bugzilla/show_bug.cgi?id=21306 H.J. Lu changed: What|Removed |Added Status|NEW |RESOLVED Resolution|--- |DUPLICATE --- Comment #2 from H.J. Lu --- Dup. *** This bug has been marked as a duplicate of bug 19579 *** -- You are receiving this mail because: You are on the CC list for the bug. ___ bug-binutils mailing list bug-binutils@gnu.org https://lists.gnu.org/mailman/listinfo/bug-binutils
[Bug ld/19579] [Regression] link error linking fortran code with PIE
https://sourceware.org/bugzilla/show_bug.cgi?id=19579 H.J. Lu changed: What|Removed |Added Status|RESOLVED|REOPENED Resolution|FIXED |--- --- Comment #19 from H.J. Lu --- Reopen -- You are receiving this mail because: You are on the CC list for the bug. ___ bug-binutils mailing list bug-binutils@gnu.org https://lists.gnu.org/mailman/listinfo/bug-binutils
[Bug binutils/21233] Internal error, /usr/bin/ld: BFD (GNU Binutils for Debian) 2.28 assertion fail ../../bfd/elfxx-mips.c:3861
https://sourceware.org/bugzilla/show_bug.cgi?id=21233 Maciej W. Rozycki changed: What|Removed |Added Status|ASSIGNED|RESOLVED Resolution|--- |FIXED --- Comment #19 from Maciej W. Rozycki --- Fixed on master and backported to 2.28, as per the automatic commit messages. -- You are receiving this mail because: You are on the CC list for the bug. ___ bug-binutils mailing list bug-binutils@gnu.org https://lists.gnu.org/mailman/listinfo/bug-binutils
[Bug binutils/21233] Internal error, /usr/bin/ld: BFD (GNU Binutils for Debian) 2.28 assertion fail ../../bfd/elfxx-mips.c:3861
https://sourceware.org/bugzilla/show_bug.cgi?id=21233
--- Comment #18 from cvs-commit at gcc dot gnu.org ---
The binutils-2_28-branch branch has been updated by Maciej W. Rozycki
:
https://sourceware.org/git/gitweb.cgi?p=binutils-gdb.git;h=beefa9cd657b7187659ba455b704b4be3c28ab17
commit beefa9cd657b7187659ba455b704b4be3c28ab17
Author: Maciej W. Rozycki
Date: Mon Mar 27 12:39:07 2017 +0100
PR ld/21233: Avoid sweeping forced-undefined symbols in section GC
Complement commit 902e9fc76a0e ("PR ld/20828: Move symbol version
processing ahead of GC symbol sweep"), commit b531344c34b0 ("PR
ld/20828: Reorder the symbol sweep stage of section GC") and commit
81ff47b3a546 ("PR ld/20828: Fix linker script symbols wrongly forced
local with section GC"), and prevent symbols forcibly entered in the
output file with the use of the `--undefined=' or `--require-defined='
linker command line options or the EXTERN linker script command from
being swept in section garbage collection and consequently recorded in
the dynamic symbol table as local entries. This happens in certain
circumstances, where a symbol reference also exists in one of the static
input files, however only in a section which is garbage-collected and
does not make it to the output file, and the symbol is defined in a
dynamic object present in the link.
For example with the `i386-linux' target and the `pr21233.s' and
`pr21233-l.s' sources, and the `pr21233.ld' linker script included with
this change we get:
$ as -o pr21233-l.o pr21233-l.s
$ ld -shared -T pr21233.ld -o libpr21233.so pr21233-l.o
$ as -o pr21233.o pr21233.s
$ ld --gc-sections -e foo --require-defined=bar -T pr21233.ld -o pr21233
pr21233.o libpr21233.so
$ readelf --dyn-syms pr21233
Symbol table '.dynsym' contains 2 entries:
Num:Value Size TypeBind Vis Ndx Name
0: 0 NOTYPE LOCAL DEFAULT UND
1: 0 OBJECT LOCAL DEFAULT UND bar
$
which makes the run-time `bar' dependency of the `pr21233' executable
different from its corresponding link-time dependency, i.e. the presence
of `libpr21233.so' and its `bar' symbol is required at the link time,
however at the run time a copy of `libpr21233.so' without `bar' will do.
Similarly with `--undefined=' and EXTERN which do not actually require
the reference to the symbol requested to be satisfied with a definition
at the link time, however once the definition has been pulled at the
link time, so it should at the dynamic load time.
Additionally with the `mips-linux' target we get:
$ ld --gc-sections -e foo --require-defined=bar -T pr21233.ld -o pr21233
pr21233.o libpr21233.so
ld: BFD (GNU Binutils) 2.28.51.20170324 assertion fail
.../bfd/elfxx-mips.c:3861
$
as the target is not prepared to handle such a local dynamic symbol.
With this change in effect we get:
$ readelf --dyn-syms pr21233
Symbol table '.dynsym' contains 2 entries:
Num:Value Size TypeBind Vis Ndx Name
0: 0 NOTYPE LOCAL DEFAULT UND
1: 0 OBJECT GLOBAL DEFAULT UND bar
$
instead, for both targets.
ld/
PR ld/21233
* ldlang.c (insert_undefined): Set `mark' for ELF symbols.
(backported from commit 80070c0d3491347f11283c5791b9dd040fedbd4f)
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[Bug ld/20828] GC-ed DSO symbols make corresponding symbols defined by a linker script local
https://sourceware.org/bugzilla/show_bug.cgi?id=20828
--- Comment #37 from cvs-commit at gcc dot gnu.org ---
The binutils-2_28-branch branch has been updated by Maciej W. Rozycki
:
https://sourceware.org/git/gitweb.cgi?p=binutils-gdb.git;h=beefa9cd657b7187659ba455b704b4be3c28ab17
commit beefa9cd657b7187659ba455b704b4be3c28ab17
Author: Maciej W. Rozycki
Date: Mon Mar 27 12:39:07 2017 +0100
PR ld/21233: Avoid sweeping forced-undefined symbols in section GC
Complement commit 902e9fc76a0e ("PR ld/20828: Move symbol version
processing ahead of GC symbol sweep"), commit b531344c34b0 ("PR
ld/20828: Reorder the symbol sweep stage of section GC") and commit
81ff47b3a546 ("PR ld/20828: Fix linker script symbols wrongly forced
local with section GC"), and prevent symbols forcibly entered in the
output file with the use of the `--undefined=' or `--require-defined='
linker command line options or the EXTERN linker script command from
being swept in section garbage collection and consequently recorded in
the dynamic symbol table as local entries. This happens in certain
circumstances, where a symbol reference also exists in one of the static
input files, however only in a section which is garbage-collected and
does not make it to the output file, and the symbol is defined in a
dynamic object present in the link.
For example with the `i386-linux' target and the `pr21233.s' and
`pr21233-l.s' sources, and the `pr21233.ld' linker script included with
this change we get:
$ as -o pr21233-l.o pr21233-l.s
$ ld -shared -T pr21233.ld -o libpr21233.so pr21233-l.o
$ as -o pr21233.o pr21233.s
$ ld --gc-sections -e foo --require-defined=bar -T pr21233.ld -o pr21233
pr21233.o libpr21233.so
$ readelf --dyn-syms pr21233
Symbol table '.dynsym' contains 2 entries:
Num:Value Size TypeBind Vis Ndx Name
0: 0 NOTYPE LOCAL DEFAULT UND
1: 0 OBJECT LOCAL DEFAULT UND bar
$
which makes the run-time `bar' dependency of the `pr21233' executable
different from its corresponding link-time dependency, i.e. the presence
of `libpr21233.so' and its `bar' symbol is required at the link time,
however at the run time a copy of `libpr21233.so' without `bar' will do.
Similarly with `--undefined=' and EXTERN which do not actually require
the reference to the symbol requested to be satisfied with a definition
at the link time, however once the definition has been pulled at the
link time, so it should at the dynamic load time.
Additionally with the `mips-linux' target we get:
$ ld --gc-sections -e foo --require-defined=bar -T pr21233.ld -o pr21233
pr21233.o libpr21233.so
ld: BFD (GNU Binutils) 2.28.51.20170324 assertion fail
.../bfd/elfxx-mips.c:3861
$
as the target is not prepared to handle such a local dynamic symbol.
With this change in effect we get:
$ readelf --dyn-syms pr21233
Symbol table '.dynsym' contains 2 entries:
Num:Value Size TypeBind Vis Ndx Name
0: 0 NOTYPE LOCAL DEFAULT UND
1: 0 OBJECT GLOBAL DEFAULT UND bar
$
instead, for both targets.
ld/
PR ld/21233
* ldlang.c (insert_undefined): Set `mark' for ELF symbols.
(backported from commit 80070c0d3491347f11283c5791b9dd040fedbd4f)
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