Re: [Tinycc-devel] wrong preprocessor shift operation

[grischka]

Christian Jullien wrote:
> Many thanks, I tested your fix but I still have a broken case:
>
> int
> main()
> {
>         unsigned int x = 0xffffffff;
>         unsigned int y = 1;
>
>         printf("fixed %08x\n", x >> y);
>         printf("fixed %08x\n", (~(unsigned int)0) >> (unsigned int)1);
>         printf("fails %08x\n", (~0) >> 1);
> }
>
> Christian

But for me results are the same with gcc and tcc

$ gcc test.c -o test && ./test
fixed 7fffffff
fixed 7fffffff
fails ffffffff
$ ./tcc -run test.c
fixed 7fffffff
fixed 7fffffff
fails ffffffff

Maybe gcc is not correct but then I need an exact explanation why ;)