[Bug ld/32433] New: No zero terminator at the end of .eh_frame with `-shared -nostdlib`

[dm.chestnykh at gmail dot com]

https://sourceware.org/bugzilla/show_bug.cgi?id=32433

            Bug ID: 32433
           Summary: No zero terminator at the end of .eh_frame with
                    `-shared -nostdlib`
           Product: binutils
           Version: unspecified
            Status: UNCONFIRMED
          Severity: normal
          Priority: P2
         Component: ld
          Assignee: unassigned at sourceware dot org
          Reporter: dm.chestnykh at gmail dot com
  Target Milestone: ---

Consider the simple x.c file contains
`void foo(){}`

Compile and link it to the shared library via
`gcc x.c -fPIC -shared -o libfoo.so -nostdlib`

And after `readelf --debug-dump=frames libfoo.so`
there is no 'ZERO terminator' at the end of .eh_frame in the output.

The same issue is observed with ld.gold.
LLVM ld.lld and ld.mold put the CIE with zero length at the end of .eh_frame
even if there are no crtend.o with zero terminator in the linker prompt

Tested on x86-64 and aarch64

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