[Bug translator/13998] New: pretty-printing bitfields shouldn't use %c

["fche at redhat dot com" <sourceware-bugzilla at sourceware dot org>]

http://sourceware.org/bugzilla/show_bug.cgi?id=13998

             Bug #: 13998
           Summary: pretty-printing bitfields shouldn't use %c
           Product: systemtap
           Version: unspecified
            Status: NEW
          Severity: normal
          Priority: P2
         Component: translator
        AssignedTo: systemtap@sourceware.org
        ReportedBy: fche@redhat.com
    Classification: Unclassified


bitfields in structs are pretty-printed with formatting type %c, whereas most
likely it should be %u.

% stap -e 'probe kernel.function("audit_log_end") { println($ab->skb$) }' -v
-p2 | grep sprint

return sprintf("{.next=%p, .prev=%p, .tstamp={...}, .sk=%p, .dev=%p, .cb=[...],
._skb_refdst=%u, .sp=%p, .len=%u, .data_len=%u, .mac_len=%u, .hdr_len=%u,
<union>={...}, .priority=%u, .local_df='%c', .cloned='%c', .ip_summed='%c',
.nohdr='%c', .nfctinfo='%c', .pkt_type='%c', .fclone='%c', .ipvs_property='%c',
.peeked='%c', .nf_trace='%c', .protocol=%u, .destructor=%p, .nfct=%p,
.nfct_reasm=%p, .nf_bridge=%p, .skb_iif=%i, .tc_index=%u, .tc_verd=%u,
.rxhash=%u, .queue_mapping=%u, .ndisc_nodetype='%c', ...} [...]


local_df is a 1-bit bitfield in struct skbuff.

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