[llvm-bugs] [Bug 47056] New: --shuffle-sections can produce an invalid dynamic relocation order

[via llvm-bugs]

https://bugs.llvm.org/show_bug.cgi?id=47056

            Bug ID: 47056
           Summary: --shuffle-sections can produce an invalid dynamic
                    relocation order
           Product: lld
           Version: unspecified
          Hardware: PC
                OS: Linux
            Status: NEW
          Severity: enhancement
          Priority: P
         Component: ELF
          Assignee: unassignedbugs at nondot.org
          Reporter: rafael at espindo.la
                CC: llvm-bugs at lists.llvm.org, smithp352 at googlemail.com

There are requirements on the order of dynamic relocations. For example, the
IRELATIVE relocations must be after the regular ones.

That is implemented by placing the synthetic sections in the right order.
Unfortunately --shuffle-sections also shuffles those.

The sortSection function should probably be updated to skip ELF_REL and
ELF_RELA.

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