Re: [avr-gcc-list] Bug in shift operation with avr-gcc

[David Brown]

On 07/06/11 19:27, Celio Guimaraes wrote:
> uint32_t  t1;
> int main(){
>      t1=0xf << (12);    // t1 gets fffff000 instead of 0000f000
> }

Others have pointed out your mistake, and given clear explanations.

For the future, please don't make claims about bugs in avr-gcc unless 
you are entirely sure that it /is/ a bug - and even then, pose your post 
as a question (is this a bug?).  The guys who write gcc and the avr-gcc 
port are very smart, very experienced, and very conscientious about 
programming and testing.  They are not infallible, and bugs do turn up 
occasionally - but in the great majority of cases, the bug lies in the 
user's code (or their understanding of C), rather than the compiler.

It is also polite to add a bit more text to your post (as well as the 
code, which was nice) - you are asking unpaid volunteers to help you. 
Don't worry if English is not your first language (guessing by your 
name) - no one will mind any mistakes.

mvh.,

David