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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW --- - lld does not accept dot assignment in an output section"
href="https://llvm.org/bugs/show_bug.cgi?id=28720">28720</a>
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<th>Summary</th>
<td>lld does not accept dot assignment in an output section
</td>
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<th>Product</th>
<td>lld
</td>
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<th>Version</th>
<td>unspecified
</td>
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<th>Hardware</th>
<td>PC
</td>
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<th>OS</th>
<td>FreeBSD
</td>
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<th>Status</th>
<td>NEW
</td>
</tr>
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<th>Severity</th>
<td>normal
</td>
</tr>
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<th>Priority</th>
<td>P
</td>
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<th>Component</th>
<td>ELF
</td>
</tr>
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<th>Assignee</th>
<td>unassignedbugs@nondot.org
</td>
</tr>
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<th>Reporter</th>
<td>emaste@freebsd.org
</td>
</tr>
<tr>
<th>CC</th>
<td>llvm-bugs@lists.llvm.org
</td>
</tr>
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<th>Blocks</th>
<td>23214
</td>
</tr>
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<th>Classification</th>
<td>Unclassified
</td>
</tr></table>
<p>
<div>
<pre>FreeBSD/amd64's kernel ldscript assigns . in an output section like so:
6 SECTIONS
7 {
...
146 .bss :
147 {
148 *(.dynbss)
149 *(.bss .bss.* .gnu.linkonce.b.*)
150 *(COMMON)
151 /* Align here to ensure that the .bss section occupies space up to
152 _end. Align after .bss to ensure correct alignment even if the
153 .bss section disappears because there are no input sections.
154 FIXME: Why do we need it? When there is no .bss section, we don't
155 pad the .data section. */
156 . = ALIGN(. != 0 ? 64 / 8 : 1);
157 }
lld's parser does not accept this:
line 156: unknown command .
. = ALIGN(. != 0 ? 64 / 8 : 1);
^
For FreeBSD's uses we could just move the assignment out of that section but
perhaps this is more commonly needed?</pre>
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