Re: [avr-gcc-list] "sized pointer" increment

[Tristan Gingold]

On May 22, 2008, at 4:26 PM, Dusan Ferbas wrote:

> Hi guys,
>
> "pointer size" increments, in a snippet below, work with  
> WinAVR-20060421 (avr-gcc 3.4.6), but does not in WinAVR-20071221  
> (avr-gcc 4.2.2).
> Compiler claims casted pointer as not an lvalue.
> Is this correct behaviour ?

Yes, post/pre increment applies only to lvalue.  And a cast is not  
anymore an lvalue.
This was an gcc extension that has been deprecated IIRC.

Tristan.

>         unsigned char   *p_received_data;
>
>         boot_info_header->section_length = *((unsigned long*) 
> p_received_data)++;
>         boot_info_header->address = *((unsigned short*) 
> p_received_data)++;
>
>
> Dusan
>
>
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