[Bug rtl-optimization/20769] New: bt-load.c doesn't take nonlocal gotos into account.

[amylaar at gcc dot gnu dot org]

While nonlocal gotos of the setjmp / longjmp variety are harmless,
nonlocal gotos like in execute/nestfunc-6.c arrive at a label
not associated with the call site, and hence the target registers
can contain unexpected values.  branch target register load
migration must not hoist register loads past a nonlocal goto
receiver of this kind.

-- 
           Summary: bt-load.c doesn't take nonlocal gotos into account.
           Product: gcc
           Version: 4.1.0
            Status: UNCONFIRMED
          Keywords: wrong-code
          Severity: normal
          Priority: P2
         Component: rtl-optimization
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: amylaar at gcc dot gnu dot org
                CC: gcc-bugs at gcc dot gnu dot org


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=20769