Re: [Firebird-devel] alloc.h global operator new replacement violating alignment requirements

[Stephan B. <sbe...@re...>]

On 02/17/2017 12:24 PM, Alex Peshkoff wrote:
> On 02/17/17 14:15, Stephan Bergmann wrote:
>
> This idea seems to be much better than DEBUG_GDS_ALLOC:
>
>> Since LibreOffice builds intended for widespread distribution are on
>> Linux usually done with GCC not Clang, this shouldn't have a performance
>> impact.)
>
> But what makes me surprised - I know that at least one of FB developers
> often does build firebird using clang (Adriano - is it so?). And we
> never used to meet such issues before. What changed? New version? Too
> good optimization flags?

I think this aggressive alignment-assumption behavior is new with 
upcoming Clang 4.  (And you need at least -O optimization for such 
problematic MOVAPS code to be produced.)