[Bug gold/19140] New: __star_* and __stop_* symbols show up in dynamic relocation

[rafael.espindola at gmail dot com]

https://sourceware.org/bugzilla/show_bug.cgi?id=19140

            Bug ID: 19140
           Summary: __star_* and __stop_* symbols show up in dynamic
                    relocation
           Product: binutils
           Version: unspecified
            Status: NEW
          Severity: normal
          Priority: P2
         Component: gold
          Assignee: ccoutant at gmail dot com
          Reporter: rafael.espindola at gmail dot com
                CC: ian at airs dot com
  Target Milestone: ---

Given

        .long __start_bar - .
        .long __init_array_start - .
        .section bar,"a"

gold complains about the first but not the second relocation when creating a
shared library:

ld: error: test.o: requires dynamic R_X86_64_PC32 reloc against '__start_bar'
which may overflow at runtime; recompile with -fPIC

bfd ld complains about both.

Alternatively, given

        .quad __start_bar
        .quad __init_array_start
        .section bar,"a"

gold creates a dynamic relocation for __start_bar but not __init_array_start.
With bfd ld one gets dynamic relocations for both.

Given what these symbols are, gold's behavior with __init_array_start seems the
most reasonable.

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