https://gcc.gnu.org/bugzilla/show_bug.cgi?id=96913
--- Comment #3 from Sergei Trofimovich <slyfox at gcc dot gnu.org> --- Specifically I think this is already a wrong format on disk: > _json.gcda: 01a70000: 0:COUNTERS topn 0 counts > _json.gcda: 01a90000: 48:COUNTERS indirect_call 24 counts > _json.gcda: 0: 1 1 140325305737168 1 1 140325305737200 0 0 > _json.gcda: 8: 0 0 0 0 0 0 0 0 > _json.gcda: 16: 0 0 0 0 0 0 0 0 > ... Assuming indirect_call is in a 'hist' value format it should be in form of: [total_executions, N, value1, counter1, ..., valueN, counterN] Main problem: we have more than one entry here (which might be ok): - record1 (ok): total_executions=1 N=1 value1=140325305737168 counter1=1 - record2 (bad): total_executions=1 N=140325305737200 counter=0 ... This is where we trip over enormous N.