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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW - [WebAssembly] DWARF sections are invalid when LEB compression is applied (-O2)"
href="https://bugs.llvm.org/show_bug.cgi?id=38570">38570</a>
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<th>Summary</th>
<td>[WebAssembly] DWARF sections are invalid when LEB compression is applied (-O2)
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<th>Product</th>
<td>lld
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<th>Version</th>
<td>unspecified
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<th>Hardware</th>
<td>PC
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<th>OS</th>
<td>All
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<th>Status</th>
<td>NEW
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<th>Severity</th>
<td>enhancement
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<th>Priority</th>
<td>P
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<th>Component</th>
<td>All Bugs
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<th>Assignee</th>
<td>unassignedbugs@nondot.org
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<th>Reporter</th>
<td>ydelendik@mozilla.com
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<th>CC</th>
<td>llvm-bugs@lists.llvm.org
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<p>
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<pre>(Created from <a href="https://reviews.llvm.org/D47901">https://reviews.llvm.org/D47901</a>)
Currently, when -O2 linker optimization applied, the function bodies in the
code section are transformed (due to LEB compression). Which makes .debug_line
invalid -- data/references point to wrong location, and by its nature,
.debug_line section references is not easy to "relocate" since it is using
delta compression scheme.
The proposed in D47901 seems to complex. The workarounds now:
- don't use -O2 option (and rely on external tools to do compression),
- strip incorrect debug/DWARF sections</pre>
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