[llvm-bugs] [Bug 33819] New: Round executable PT_LOAD to page size and pad it traps

[via llvm-bugs]

https://bugs.llvm.org/show_bug.cgi?id=33819

            Bug ID: 33819
           Summary: Round executable PT_LOAD to page size and pad it traps
           Product: lld
           Version: unspecified
          Hardware: PC
                OS: Linux
            Status: NEW
          Severity: enhancement
          Priority: P
         Component: ELF
          Assignee: unassignedbugs at nondot.org
          Reporter: rafael.espindola at gmail.com
                CC: llvm-bugs at lists.llvm.org

When not using a linker script with SECTIONS we should probably round the size
of executable PT_LOAD to a page size and pad it with traps.

The reasoning is that if we don't do it any tool editing the file can remove
the traps.

Currently even lld will put non SHF_ALLOC bits if the executable PT_LOAD is at
the end.

There was an old attempt at it in D33630. We can hopefully make it simpler now.

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