I just tried to compile package seyon-2.20c-914 with a
prerelease of the GNU C compiler version 4.1. It said

1.

SeDial.c:659: warning: operation on `sHold' may be undefined

The source code is

    sprintf(disItemsBuf, qres.dialDirFormat,
            ddItems[n]->name,
            ddItems[n]->number,
            strncmp((sHold = ddItems[n]->baud), "CUR", 3) ? sHold : "????",
            (iHold = ddItems[n]->bits) == 100 ? '?' : itoa(iHold),
            (iHold = ddItems[n]->parity) ? (iHold == 1 ? 'O' :
                                            (iHold == 2 ? 'E' : '?')) : 'N',
            (iHold = ddItems[n]->stopBits) == 100 ? '?' : itoa(iHold),
            strncmp((sHold = ddItems[n]->prefix), "CUR", 3) ?
            strcmp(sHold, qres.dialPrefix) ? 'P' : 'D' : '?',
            strncmp((sHold = ddItems[n]->suffix), "CUR", 3) ?
            strcmp(sHold, qres.dialSuffix) ? 'S' : 'D' : '?',
            ddItems[n]->script);

I agree with the compiler - this code seems to be undefined.

Suggest code rework.