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digitalmars.D.bugs - [Issue 1380] New: dmd generate wrong end record, and linker doesn't check this checksum

reply d-bugmail puremagic.com writes:
http://d.puremagic.com/issues/show_bug.cgi?id=1380

           Summary: dmd generate wrong end record, and linker doesn't check
                    this checksum
           Product: D
           Version: unspecified
          Platform: PC
        OS/Version: Windows
            Status: NEW
          Severity: normal
          Priority: P2
         Component: DMD
        AssignedTo: bugzilla digitalmars.com
        ReportedBy: davidl 126.com


the end record of OMF obj file generated by DMD is:
8a 0200 0000

while the checksum is wrong, it should be 0x74, and the linker doesn't check
this


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Jul 27 2007
parent d-bugmail puremagic.com writes:
http://d.puremagic.com/issues/show_bug.cgi?id=1380


bugzilla digitalmars.com changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEW                         |RESOLVED
         Resolution|                            |INVALID





The checksum value emitted is 0, which is a valid value meaning "ignore the
checksum", which is why the linker ignores it.

The checksum serves no useful modern purpose, as obj files are not on easily
corrupted media anymore like paper tape or crummy analog phone lines. Also,
generating and checking the checksum slows down compilation speed.

So, it isn't done, by design. It isn't broken.


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Sep 04 2007