[Bug c/56051] New: Wrong expression evaluation

[olivier.gay at gmail dot com]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=56051



             Bug #: 56051

           Summary: Wrong expression evaluation

    Classification: Unclassified

           Product: gcc

           Version: 4.7.2

            Status: UNCONFIRMED

          Severity: normal

          Priority: P3

         Component: c

        AssignedTo: unassig...@gcc.gnu.org

        ReportedBy: olivier....@gmail.com





#include <stdio.h>



int main(void)

{

    int a, s = 8;

    unsigned char data[1] = {0};



    a = data[0] < (unsigned char) (1 << s);

    printf("%d\n", a);



    return 0;

}



The expression assigned to object a evaluates to 1 but I think it should

evaluate to 0. Tested on gcc 4.7.2 / Linux x64.