[Bug ld/18452] ld allows overlapping sections

[amodra at gmail dot com]

https://sourceware.org/bugzilla/show_bug.cgi?id=18452

Alan Modra <amodra at gmail dot com> changed:

           What    |Removed                     |Added
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                 CC|                            |amodra at gmail dot com

--- Comment #1 from Alan Modra <amodra at gmail dot com> ---
Confirmed.  This is where we update the region "current" location, which lacks
any sort of check.
                if (output_section_statement == abs_output_section)
                  {
                    /* If we don't have an output section, then just adjust
                       the default memory address.  */
                    lang_memory_region_lookup (DEFAULT_MEMORY_REGION,
                                               FALSE)->current = newdot;
                  }

The behaviour goes back forever as far as I can tell. This code was introduced
with commit 27f7237e.

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