r218141 - In the Itanium ABI, move stuff to the comdat of variables with static init.

[Rafael Espíndola]

>
>          .file 1 "test.c"
>
>          .section        .text.startup,"axG", at progbits,test,comdat
>          .loc 1 1
>          nop
>
>          .section        .text.startup,"ax", at progbits
>          .loc 1 1
>          nop
>
> This will cause multiple sections named ".text.startup" to exist in the
> output object, one within the comdat group and one outside of it.   This in
> turn triggers a bug in dwarf2dbg.c in GAS, where it gets confused in
> looking up the section name in a hash table and assumes there can only be
> one section with the same name, resulting in an internal error.

Were we already causing GAS problems in r217264? It would cause us to
create multiple .init_array sections. Or is the problem specific to
.text.startup?

> This causes compile failures in the tramp3d-v4 and CoyoteBench/fftbench
> test cases in test-suite when using -g to build the suite.
>
>
> The bug is fixed in mainline GAS here:
> https://sourceware.org/ml/binutils/2014-09/msg00211.html
> but that hasn't made it into any release (or distro) yet.

Sigh :-(

So, this is only when not using the integrated assembler and using -g?
I am tempted to just live with this bug and make sure the integrated
assembler works. Why wasn't the integrated assembler used? Were you
explicitly testing the external one?

Cheers,
Rafael