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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW - [ELF] - LLD can produce excessive undefined symbols with specific linker script."
href="https://bugs.llvm.org/show_bug.cgi?id=36297">36297</a>
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<th>Summary</th>
<td>[ELF] - LLD can produce excessive undefined symbols with specific linker script.
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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>Windows NT
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<th>Status</th>
<td>NEW
</td>
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<th>Severity</th>
<td>enhancement
</td>
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<th>Priority</th>
<td>P
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<th>Component</th>
<td>ELF
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<th>Assignee</th>
<td>unassignedbugs@nondot.org
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<th>Reporter</th>
<td>grimar@accesssoftek.com
</td>
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<th>CC</th>
<td>llvm-bugs@lists.llvm.org
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<p>
<div>
<pre>Imagine following script:
SECTIONS { .bar (a+b) : { *(.stub) } };
And assume that there is no .stub section in object.
"a+b" here is address expression.
We add all symbols referenced by script as undefined
early. ".bar" becomes empty section and removed from output.
a and b though present as undefined in symtab and no error
is produced.
bfd produce error:
test.script:4: non constant or forward reference address expression for section
.bar
gold too:
ld: error: undefined symbol 'a' referenced in expression
ld: error: undefined symbol 'a' referenced in expression</pre>
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