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Re: Fix sparc segfault (Was: Re: [patch] Fix PR/14058)

On Sat, Feb 14, 2004 at 08:37:44AM +0100, Josef Zlomek wrote:
> I do not know what exactly means the
> (parallel:DF [
>         (expr_list (nil)
>             (const_int 0 [0x0]))
>         (expr_list (reg:DF 44 %f12 [ f ])
>             (const_int 0 [0x0]))
>     ])
> here (why there should be that (nil)).

It's documented under FUNCTION_ARG:

As a special exception the first @code{expr_list} in the @code{parallel}
RTX may have a first operand of zero.  This indicates that the entire
argument is also stored on the stack.

See also the construct that's used in eg. emit_group_load.
Better than checking every time through the loop, IMO.


r~
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