Re: [Sdcc-user] SDCC is still unstable

[Rod B. <ro...@bo...>]

Philipp Klaus Krause wrote:

>Jatin Bhateja wrote:
>  
>
>>HI All,
>>
>>I just ran a simple test case and it passed very easily.
>>
>>static static static static static static static static static static
>>static static static static static static static int a, /* { dg-error
>>"error: duplicate 'static'" } */
>>  b;
>>
>>extern extern int c, /* { dg-error "error: duplicate 'extern'" } */
>>  d;
>>
>>typedef typedef int e, /* { dg-error "error: duplicate 'typedef'" } */
>>  f;
>>
>>
>>Regards
>>Jatin Bhateja
>>    
>>
>
>There's even worse things than that:
>It doesn't really do type cheking in many places, so you can pass
>function arguments of completly wrong type.
>
>Some examples of things that will compile without a warning:
>const:
>
>void b(int *i)
>{
>}
>
>void a(const int *i)
>{
>int *j;
>j = i;// Should give a warning or error here.
>b(i);// Should give a warning or error here.
>}
>
>pointer tyes:
>struct test{
>char b;
>float c;
>};
>
>char ptest(char *p)
>{
>return(*p);
>}
>
>char ptest2(float *a)
>{
>return(ptest(a));// Use float* as char**
>}
>
>char ptest3(struct test *a)
>{
>return(ptest3(&a));// Use struct test * as
>struct test **
>}
>
>The quality depends a lot on the port. If you want to write code for the
>Z80 port, be prepared for seemingly random, but reproducabel compiler
>crashes and generation of code that doesn't work. These are not rare
>problems. You'll probably encounter them in every single one of your
>projects. I don't know how bad it is with the other ports.
>
>Philipp
>
>
>  
>

On a better note if you are compiling for the MCS51 family of processors 
then this is in my non-exhaustive opinion the second best compiler you 
can get this this chip.  The top MCS51 compiler is the Keil compiler and 
the second best is SDCC, Keil is $5kUSD or so and SDCC is free what a 
difference. 
I would also like to point out that on the processors we are working 
with there are equally legitimate way to shoot your self in the foot 
with even generic C-code.  Just because the compiler will b let you jump 
off a cliff does not mean that you should jump off that cliff.
This is just my $0.02 worth.

Regards,
Rod Boyce.