encountered. However, when reading end of input, the source type is set to SEOF while popping, whereas the recursion check code only checks for an SALIAS type. Fix: add a new SF_HASALIAS flag; change u.tblp from being valid if type is SALIAS to being valid if SF_HASALIAS is set; set SF_HASALIAS for the created SALIAS sources; set SF_HASALIAS and u.tblp when creating SALIAS whose next is SEOF on the SEOF source as well. Reported by Michael Hlavinka as Redhat Bug #474115
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