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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW - [WebAssembly] wasm-opt strips symbol names when optimizing"
href="https://bugs.llvm.org/show_bug.cgi?id=45602">45602</a>
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<th>Summary</th>
<td>[WebAssembly] wasm-opt strips symbol names when optimizing
</td>
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<th>Product</th>
<td>clang
</td>
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<th>Version</th>
<td>trunk
</td>
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<th>Hardware</th>
<td>PC
</td>
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<th>OS</th>
<td>Windows NT
</td>
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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
</td>
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<th>Component</th>
<td>Driver
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<th>Assignee</th>
<td>unassignedclangbugs@nondot.org
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<th>Reporter</th>
<td>jgravelle@google.com
</td>
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<th>CC</th>
<td>llvm-bugs@lists.llvm.org, neeilans@live.com, richard-llvm@metafoo.co.uk
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<p>
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<pre>If wasm-opt is present on PATH, it is automatically invoked after wasm-ld. It
reuses the -Ox flag from clang to determine its optimization level. Anything
other than -O0 leads to wasm-opt stripping the names section. This makes
debugging an optimized build more awkward.
`clang foo.cpp -g -O1 -o foo.wasm --target=wasm32 -v` does not have a names
section
`clang foo.cpp -g -O0 -o foo.wasm --target=wasm32 -v` does still have symbols</pre>
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