After building 1.4.2 with debug flags to configure, I get this (I've got these warnings in previous releases, too):
malloc debug: Request for 0 bytes (coll_inter_gatherv.c, 94) malloc debug: Request for 0 bytes (coll_inter_gatherv.c, 94) malloc debug: Request for 0 bytes (coll_inter_gatherv.c, 94) malloc debug: Request for 0 bytes (coll_inter_gatherv.c, 94) malloc debug: Request for 0 bytes (coll_inter_scatterv.c, 82) malloc debug: Request for 0 bytes (coll_inter_scatterv.c, 82) malloc debug: Request for 0 bytes (coll_inter_scatterv.c, 82) malloc debug: Request for 0 bytes (coll_inter_scatterv.c, 82) -- Lisandro Dalcin --------------- CIMEC (INTEC/CONICET-UNL) Predio CONICET-Santa Fe Colectora RN 168 Km 472, Paraje El Pozo Tel: +54-342-4511594 (ext 1011) Tel/Fax: +54-342-4511169