Item 63 from the old PROBLEMS file (no test case available):
----------------------------------------
Potential problem in cc_status.value2, if it
ever activates itself after a two-address subtraction (which currently
cannot happen). It is supposed to compare the current value of the
destination but eliminating it would use the results of the
subtraction, equivalent to comparing the previous value of the
destination.
----------------------------------------
--
Summary: [cc0] Potential problem with cc_status.value2 (from old
PROBLEMS)
Product: gcc
Version: unknown
Status: UNCONFIRMED
Severity: normal
Priority: P2
Component: middle-end
AssignedTo: unassigned at gcc dot gnu dot org
ReportedBy: steven at gcc dot gnu dot org
CC: gcc-bugs at gcc dot gnu dot org
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=19202
