review request (L): 6981777 implement JSR 292 EG adjustments from summer 2010

[John Rose]

On Sep 20, 2010, at 12:57 AM, Christian Thalinger wrote:

> src/share/vm/classfile/classFileParser.cpp:
> 
> +          cfs->guarantee_more(3, CHECK);  // operand_count, ..., tag/access_flags
> +          u2 op_count = cfs->get_u2_fast();
> +          cfs->guarantee_more(2*op_count + 1, CHECK);
> 
> I think the additional +1 is wrong as you check for 3 in the first
> guarantee_more.

Yes, but that 3 only assures the tag will be present if op_count==0.
The way this big loop works is everybody has to ensure that the next guy's tag is already loaded.
So almost every guarantee_more has to have a +1.

-- John