[Bug c/33653] New: volatile memory access optimized away

[marcus at jet dot franken dot de]

Wines IsBadReadPtr() is not working anymore, since memory reads are optimized
away, since the result of the read is not used. However the memory is marked
volatile so this should perhaps not happen.

See attached testcase and check the assembly


-- 
           Summary: volatile memory access optimized away
           Product: gcc
           Version: 4.3.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: c
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: marcus at jet dot franken dot de


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=33653