On 8/25/2011 10:06 AM, Carlos O'Donell wrote:
> On 8/25/2011 6:37 AM, Rolf Eike Beer wrote:
>> const&)]+0xbc): cannot reach
>> 00004abb__ZNSt8_Rb_treeIN5cmsys6StringESt4pairIKS1_iESt10_Select1stIS4_ESt4lessIS1_ESaIS4_EE8_S_rightEPSt18_Rb_tree_node_base+0,
>> recompile with -ffunction-sections
> So did you recompile with -ffunction-sections?
>
> The basic problem is that the linker was unable to insert a jump
> to the requested function because it was too far away. Some targets
> like hppa have short branch distances and we use intermediate stub
> tables to get around that. However, we can't insert stub tables just
> anywhere, they need to go between sections. Therefore you need to
> break up this object file.
I think there is a real bug here but nobody has provided a test case.  
-ffunction-sections
probably won't help.

Stub sizes vary depending on whether PIC code or non PIC code is being 
generated.
We need a bigger stub table for PIC C++ code as C++ tends to generate a 
lot of small
routines.

I've attached the GCC part of the change.  There's also a binutils patch 
which I can't
access at the moment.

Dave

-- 
John David Anglin    dave.anglin@bell.net