[Bug ld/16563] Corrupt .eh-frame section created when linking LTO and non-LTO objects

2014-02-12 Thread polacek at redhat dot com 
https://sourceware.org/bugzilla/show_bug.cgi?id=16563

Marek Polacek  changed:

   What|Removed |Added

 CC||polacek at redhat dot com

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[Bug ld/14747] undefined reference to `_GLOBAL_OFFSET_TABLE_' with -flto

2012-10-25 Thread polacek at redhat dot com 
http://sourceware.org/bugzilla/show_bug.cgi?id=14747

--- Comment #10 from Marek Polacek  2012-10-25 
14:08:06 UTC ---
Seems to work.  Thanks a lot!

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[Bug ld/14747] undefined reference to `_GLOBAL_OFFSET_TABLE_' with -flto

2012-10-25 Thread polacek at redhat dot com 
http://sourceware.org/bugzilla/show_bug.cgi?id=14747

--- Comment #8 from Marek Polacek  2012-10-25 
11:59:16 UTC ---
Ok, reproducible even on x86_64 Fedora 16 with trunk GCC.  I have built current
GCC trunk (just ../configure --prefix=`pwd` --enable-languages=c,c++
--disable-bootstrap) and current hjl/lto/master branch (just ../configure &&
make).  Then in ~/hbin2 I have newly built ld-new and a 'ld' script:
$ cat ~/hbin2/ld
#!/bin/sh
/home/marek/hbin2/ld-new --version
exec /home/marek/hbin2/ld-new "$@"

Now, it is needed to adjust ORIGINAL_LD_FOR_TARGET and
ORIGINAL_PLUGIN_LD_FOR_TARGET in ./gcc/collect-ld to point to newly built
ld-new, so e.g. "/home/marek/hbin2/ld".  Then just:
$ PATH=~/hbin2:$PATH ~/rh/x/trunk/gcc/g++ -B ~/rh/x/trunk/gcc -c -O2
-fno-early-inlining -flto pr13229.cc -m32
$ PATH=~/hbin2:$PATH ~/rh/x/trunk/gcc/g++ -B ~/rh/x/trunk/gcc -shared -O2 -fPIC
-flto -fuse-linker-plugin -nostdlib pr13229.o -m32
GNU ld (GNU Binutils) 2.23.51.20121025
Copyright 2012 Free Software Foundation, Inc.
This program is free software; you may redistribute it under the terms of
the GNU General Public License version 3 or (at your option) a later version.
This program has absolutely no warranty.
/tmp/cck1nj8q.ltrans0.ltrans.o: In function `test2()':
cck1nj8q.ltrans0.o:(.text+0x8): undefined reference to `_GLOBAL_OFFSET_TABLE_'
collect2: error: ld returned 1 exit status

Tried also gcc-4_7 branch and the result is the same like above.

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[Bug ld/14747] undefined reference to `_GLOBAL_OFFSET_TABLE_' with -flto

2012-10-24 Thread polacek at redhat dot com 
http://sourceware.org/bugzilla/show_bug.cgi?id=14747

--- Comment #6 from Marek Polacek  2012-10-24 
14:12:36 UTC ---
Ah, but with g++ -m32 [...] I can now reproduce it even on x86_64.  Sorry.

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[Bug ld/14747] undefined reference to `_GLOBAL_OFFSET_TABLE_' with -flto

2012-10-24 Thread polacek at redhat dot com 
http://sourceware.org/bugzilla/show_bug.cgi?id=14747

--- Comment #5 from Marek Polacek  2012-10-24 
13:53:25 UTC ---
To be more concrete, after building binutils, I put new ld/ld-new in ~/hbin,
where I have ld script, which is just
#!/bin/sh
exec /root/hbin/ld-new "$@"

and then I run
PATH=/root/hbin:$PATH g++ -shared -O2 -fPIC -flto -fuse-linker-plugin -nostdlib
pr13229.o

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[Bug ld/14747] undefined reference to `_GLOBAL_OFFSET_TABLE_' with -flto

2012-10-24 Thread polacek at redhat dot com 
http://sourceware.org/bugzilla/show_bug.cgi?id=14747

--- Comment #4 from Marek Polacek  2012-10-24 
13:44:19 UTC ---
(In reply to comment #3)
> Please simply try hjl/lto/master branch.

Done.  I'm still seeing the same failure (again, only i?86).

> It works for me on x86-64 with -m32.  Can you
> reproduce it on x86-64 with -m32?

No, unfortunately not :(.  I've built hjl/lto/master branch with
$ CC='gcc -m32' CXX='g++ -m32' i386 ./configure
$ i386 make

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[Bug ld/14747] undefined reference to `_GLOBAL_OFFSET_TABLE_' with -flto

2012-10-22 Thread polacek at redhat dot com 
http://sourceware.org/bugzilla/show_bug.cgi?id=14747

--- Comment #2 from Marek Polacek  2012-10-22 
08:57:57 UTC ---
The version is:
gcc (GCC) 4.7.1 20120813 (Red Hat 4.7.1-7)

That patch doesn't apply.  I've tried also
2012-06-28  H.J. Lu  

   PR ld/14272
   * elflink.c (_bfd_elf_fix_symbol_flags): Mark the plugin symbol
   undefined if it is referenced from a non-IR file.
, but this one is already in the trunk.

BTW, it seems to happen really on i?86.

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[Bug ld/14747] New: undefined reference to `_GLOBAL_OFFSET_TABLE_' with -flto

2012-10-20 Thread polacek at redhat dot com 
http://sourceware.org/bugzilla/show_bug.cgi?id=14747

 Bug #: 14747
   Summary: undefined reference to `_GLOBAL_OFFSET_TABLE_' with
-flto
   Product: binutils
   Version: 2.24 (HEAD)
Status: NEW
  Severity: normal
  Priority: P2
 Component: ld
AssignedTo: unassig...@sourceware.org
ReportedBy: pola...@redhat.com
Classification: Unclassified


When I apply the patches/binutils-lto-mixed-18.patch to trunk, then on i?86:

# cat pr13229.cc 
int call_something (int);
inline void optimize_me_out (void)  
{ 
  call_something(0);
}
__attribute__ ((visibility("hidden")))
int optimize_me_out2 (int param)
{ 
  if ((void *)optimize_me_out != (void *)call_something)
return call_something(0);   
}
void test2 (void)
{ 
  optimize_me_out();
}
# g++ -c -O2 -fno-early-inlining -flto pr13229.cc
# g++ -shared -O2 -fPIC -flto -fuse-linker-plugin -nostdlib pr13229.o
/tmp/ccCXA40F.ltrans0.ltrans.o: In function `test2()':
ccCXA40F.ltrans0.o:(.text+0x8): undefined reference to `_GLOBAL_OFFSET_TABLE_'
collect2: error: ld returned 1 exit status

(The testcase is ld/13229.)

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