[Vm-dev] NoDbgRegParms gcc bug? (german reader needed)

[Max Leske]

> On 05 Apr 2015, at 19:27, vm-dev-request at lists.squeakfoundation.org wrote:
> 
> Hi All.
> 
> 
> 
> The NoDbgRegParm non-expansion to __attribute__((regparm(0))) could be a gcc bug as described here:
> 
> 
> https://gcc.gnu.org/bugzilla/show_bug.cgi?id=15132 <https://gcc.gnu.org/bugzilla/show_bug.cgi?id=15132>    

Yes, looks like it (I’m a german speaker).

> 
> 
> and here.
> 
> 
> https://gcc.gnu.org/ml/gcc/2004-03/msg00039.html <https://gcc.gnu.org/ml/gcc/2004-03/msg00039.html>
> 
> 
> If anybody can read the german at the first link and verify, much appreciated.
> 
> 
> 
> 
> For those who experience the bug, I have found a method to toggle it.
> 
> 
> In Cog/src/vm/cointerp.h  at approximately line 9, adding the "noinline" attribute allows the compile while swapping them re-inroduces the bug: 
> 
> 
> 
> 
> 
> #if !PRODUCTION &amp;&amp; defined(__GNUC__) &amp;&amp; !defined(NoDbgRegParms)
> # define NoDbgRegParms __attribute__ ((regparm(0)))
> # define NoDbgRegParms __attribute__ ((noinline))
> #endif
> 
> 
> 
> (I am working in the build.linux32x86/squeak.cog.v3/build.assert/ directory)
> 
> 
> 
> thx,
> 
> 
> tty

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