https://issues.dlang.org/show_bug.cgi?id=24711

          Issue ID: 24711
           Summary: Elf object file code sections are being padded with 00
                    bytes for alignment
           Product: D
           Version: D2
          Hardware: All
                OS: Linux
            Status: NEW
          Severity: minor
          Priority: P1
         Component: dmd
          Assignee: nobody@puremagic.com
          Reporter: bugzilla@digitalmars.com

gcc doesn't do that. I don't know why dmd is. This can cause problems with disassembly because 00 bytes decode to two instructions, which can overflow the code section.

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