[Bug c/48414] New: Missing "uninitialized" warning in simple switch

[sarbalap+gccbugzilla at gmail dot com]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=48414

           Summary: Missing "uninitialized" warning in simple switch
           Product: gcc
           Version: 4.5.2
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: c
        AssignedTo: unassig...@gcc.gnu.org
        ReportedBy: sarbalap+gccbugzi...@gmail.com


Compiling the following code does not produce any warning, even if the "ret"
variable would be used uninitialized in most cases:

#include <stdio.h>

int main(void)
{
        int ret;

        printf("Input something: ");
        fflush(stdout);
        int c = getchar();

        switch (c) {
        case 'a':
                ret = 0;
                break;
        default:
                /* ret still uninitialized. */
                break;
        }

        return ret;
}

Compiled with "gcc -Wall -o uninitialized uninitialized.c" under GCC 4.5.2.