Just looking into /tmp after a testsuite runs there are a lot of files there.
cc0FIKlt.err ccceY3TE.err
cciZMsdN.o.063t.alias ccqFjO6o.err ccy5TZdA.out
cc0hiz3p.wpa.o ccCFYtDM.wpa.o.063t.alias ccj4ba9L.out
ccqfuPHN.o.063t.alias ccy7ECNJ.out
cc0hKTzD.err ccCG7VOZ.lto.o
ccjdsNY9.wpa.o.064t.alias ccQkrpZG.args ccy9sdwM.err
cc0k5wqP.out ccCgeHHu.err ccJEfXym.lto.o
ccqouheB.o.064t.alias ccyAqAAM.o.063t.alias
cc0Ozqm1.o.063t.alias ccCHoca3.out ccJGczq7.out
ccQouyAC.wpa.o.063t.alias ccyaxNXz.err
cc0Phjpr.wpa.o.063t.alias cccK5VB6.out
ccjgNZW8.wpa.o.063t.alias ccQozpxk.wpa.o ccyBmPPE.out
cc1iVMRd.lto.o ccckjtgo.o.063t.alias ccJjqEQP.lto.o
ccqPmK7z.out ccydQI8s.o.063t.alias
cc1xHp8y.out ccclqqey.le
ccjKAC6a.ltrans.out ccqq6YWh.wpa.o.064t.alias ccyFQagL.out
cc22yyVE.o.064t.alias cccMEAnN.o.064t.alias
ccjkFKpm.o.063t.alias ccQqd0Yv.wpa.o.063t.alias
ccyggdbc.wpa.o.063t.alias
cc2DRkCf.out cccmSh1b.c
ccjo0gmo.wpa.o.064t.alias ccQshPjf.lto.o
ccyiHfNi.o.063t.alias
cc2gdrl2.ltrans.out cccmVw1b.out
ccjOy4nj.o.063t.alias ccQSN6LV.out ccYjSSG0.out
cc2p3Tcf.args ccCNucKD.out
ccjQMr9a.ltrans.out ccqUFGHe.out ccYLXAnn.lto.o
cc2QYfVs.s cccOj91a.out ccJT4LeX.ld
ccqvg7qW.ltrans.out ccYPAEzh.le
cc2tmqG6.args ccCPi3tX.args
ccJZuONo.o.063t.alias ccQvU1p5.lto.o ccyPdZoe.lto.o
cc2WeO2S.lto.o ccCrjXda.args cck7i7Q2.s
ccqzAyLd.args ccYPLCku.out
cc2zotJQ.o.063t.alias ccCRmXl1.err cck7SKUV.args
ccre6xGt.wpa.o.063t.alias ccYQJku1.wpa.o.063t.alias
Some of them come from bug 41564 but others I don't know where they come from.
--
Summary: testsuite (-flto/-fwrop) leaves crap in /tmp
Product: gcc
Version: 4.5.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: driver
AssignedTo: unassigned at gcc dot gnu dot org
ReportedBy: pinskia at gcc dot gnu dot org
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=41637
