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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW - [wasm] __import_module__, __import_name__ attributes do not work with -flto"
href="https://bugs.llvm.org/show_bug.cgi?id=43211">43211</a>
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<th>Summary</th>
<td>[wasm] __import_module__, __import_name__ attributes do not work with -flto
</td>
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<th>Product</th>
<td>libraries
</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>Linux
</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
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<th>Component</th>
<td>Backend: WebAssembly
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<th>Assignee</th>
<td>unassignedbugs@nondot.org
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<th>Reporter</th>
<td>alonzakai@gmail.com
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</tr>
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<th>CC</th>
<td>llvm-bugs@lists.llvm.org
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<p>
<div>
<pre>extern void foo() __attribute__((__import_module__("module"),
__import_name__("base")));
int main() {
foo();
}
Building with say
emcc a.cpp -s ERROR_ON_UNDEFINED_SYMBOLS=0 -g
the output contains
(import "module" "base" (func $foo\28\29))
However, adding -flto to that command breaks things - it now imports as
(import "env" "_Z3foov" (func $foo\28\29))
Perhaps the attributes information is supported in wasm object files but not in
LLVM bitcode files?
This affects wasi which uses those attributes.</pre>
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