New compile warnings in CVS

I just updated my CVS copy and am seeing four new warnings from
pgstat.c:pgstat.c:2352: warning: variable `dbentry' might be clobbered by`longjmp' or `vfork'pgstat.c:2360: warning:
variable`havebackends' might be clobbered by`longjmp' or `vfork'pgstat.c:2362: warning: variable `use_mcxt' might be
clobberedby`longjmp' or `vfork'pgstat.c:2363: warning: variable `mcxt_flags' might be clobbered by`longjmp' or `vfork'
 

Any ideas on this?

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