Ubuntu
binutils package

10.04: binutils-gold is out of date

Bug #673893 reported by Konstantin Serebryany
18
This bug affects 2 people
Affects Status Importance Assigned to Milestone
binutils (Ubuntu)
Won't Fix
Undecided
Unassigned

Bug Description

Binary package hint: binutils

binutils-gold (2.20.1-3ubuntu7) seems to be too old in 10.04.
The version of gold available with apt-get fails to correctly link a static binary (the fresh gold works fine).

% cat st.cc
#include <stdio.h>
int main() {
  int c = 1;
  int res = sscanf("123", "%d", &c);
  fprintf(stderr, "XXX: %d %d\n", res, c);
}
% g++ st.cc -static && ./a.out
XXX: 1 123
% sudo apt-get install binutils-gold
...
% g++ st.cc -static && ./a.out
XXX: -1 1
% sudo apt-get remove binutils-gold
...
% g++ st.cc -static && ./a.out
XXX: 1 123

Revision history for this message
Ian Lance Taylor (ianlancetaylor) wrote :

The problem is that the libc is using STT_GNU_IFUNC symbols. In order to get a version of gold with STT_GNU_IFUNC support, Ubuntu needs to use gold version 100820 or newer. The gold in the GNU binutils 2.21 release should work fine.

Revision history for this message
strk (strk) wrote :

This bug costed me a day fighting with bad ugly dragons.
Would be nice to save others from that experience.

Revision history for this message
strk (strk) wrote :

To give more context to the dragons:

To reproduce:
 git clone git://github.com/strk/postgis.git
 cd postgis && git checkout 728e94ab0325a89fa3ac4548d8617d144a0ab717
 ./autogen.sh && ./configure && make all
 cd liblwgeom/cunit && make check

Expected result:
 no segfault

Obtained result:
 segfault

I've spent hours moving code around in cu_tester.c or some tests
and could handle to avoid the segfault, but it made no sense.
Valgrind reported somethign like:

 ==31508== Bad permissions for mapped region at address 0x4885E0

And gdb found it comin from strcmp or strlen...

Linking cu_tester with "the other" linker works fine.

Revision history for this message
Matthias Klose (doko) wrote :

the ubuntu-toolchain-r/test PPA has an updated package.

Revision history for this message
Jonathan Davies (jpds) wrote :

The package in the above PPA appears to work as expected in a Lucid virtual machine.

Revision history for this message
Micah Gersten (micahg) wrote :

We actually need to break the -gold binary out into its own source package and drop it from the main binutils package to update this.

Revision history for this message
Matthias Klose (doko) wrote :

closing this as won't fix. the 12.04 LTS has a working gold, and for 10.04 (lucid), please use the package from the PPA

Changed in binutils (Ubuntu):
status: New → Won't Fix
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