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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW - [WebAssembly] Segment->OutputSeg is nullptr at DefinedData::getVirtualAddress"
href="https://bugs.llvm.org/show_bug.cgi?id=37555">37555</a>
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<th>Summary</th>
<td>[WebAssembly] Segment->OutputSeg is nullptr at DefinedData::getVirtualAddress
</td>
</tr>
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<th>Product</th>
<td>libraries
</td>
</tr>
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<th>Version</th>
<td>trunk
</td>
</tr>
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<th>Hardware</th>
<td>PC
</td>
</tr>
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<th>OS</th>
<td>All
</td>
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<th>Status</th>
<td>NEW
</td>
</tr>
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<th>Severity</th>
<td>enhancement
</td>
</tr>
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<th>Priority</th>
<td>P
</td>
</tr>
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<th>Component</th>
<td>Backend: WebAssembly
</td>
</tr>
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<th>Assignee</th>
<td>unassignedbugs@nondot.org
</td>
</tr>
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<th>Reporter</th>
<td>ydelendik@mozilla.com
</td>
</tr>
<tr>
<th>CC</th>
<td>llvm-bugs@lists.llvm.org, sbc@chromium.org
</td>
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<p>
<div>
<pre>The lld's getVirtualAddress() fails for function static locals when debug
information is enabled in object file.
The test case compiled from C:
struct S {
int i; int j;
};
void test(struct S *i) {
i->i ^= i->j;
}
void start() {
static struct S s = { 1, 2 };
test(&s);
}
void _start() { }
// `clang-7.0 --target=wasm32-unknown-unknown-wasm test.c -g -c -o test.o`
The command `lld -flavor wasm test.o -o test.wasm` fails at
<a href="https://github.com/llvm-mirror/lld/blob/f8a91f09fc90265ce7f104ed4c0e4aebcfedc693/wasm/Symbols.cpp#L155">https://github.com/llvm-mirror/lld/blob/f8a91f09fc90265ce7f104ed4c0e4aebcfedc693/wasm/Symbols.cpp#L155</a>
due to Segment->OutputSeg being NULL.</pre>
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</p>
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