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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW - wasm32: return_call_indirect type mismatch"
href="https://bugs.llvm.org/show_bug.cgi?id=45007">45007</a>
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<th>Summary</th>
<td>wasm32: return_call_indirect type mismatch
</td>
</tr>
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<th>Product</th>
<td>new-bugs
</td>
</tr>
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<th>Version</th>
<td>9.0
</td>
</tr>
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<th>Hardware</th>
<td>PC
</td>
</tr>
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<th>OS</th>
<td>Linux
</td>
</tr>
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<th>Status</th>
<td>NEW
</td>
</tr>
<tr>
<th>Severity</th>
<td>enhancement
</td>
</tr>
<tr>
<th>Priority</th>
<td>P
</td>
</tr>
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<th>Component</th>
<td>new bugs
</td>
</tr>
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<th>Assignee</th>
<td>unassignedbugs@nondot.org
</td>
</tr>
<tr>
<th>Reporter</th>
<td>mail@daniel-mendler.de
</td>
</tr>
<tr>
<th>CC</th>
<td>htmldeveloper@gmail.com, llvm-bugs@lists.llvm.org
</td>
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<p>
<div>
<pre>$ clang-9 -O3 -ffreestanding -nostdinc -nostdlib --target=wasm32 -mtail-call
test.c -o test.wasm
Running the file test.wasm using `node --experimental-wasm-return_call`
produces a type mismatch error. Looking into the produced wasm code using
wabt-objdump there is indeed a mismatch `return_call_indirect 0 0` refers to
the type `() -> nil` instead of `() -> i32` as it should be.
---
// test.c
typedef int (*Fn)(void);
int g(void) {
return 0;
}
Fn p = g;
int f(void) {
return p();
}
void _start() {
f();
}
---
A variation of the program using attribute(noinline) also does not work:
---
// test.c
typedef int (*Fn)(void);
int g(void) {
return 0;
}
Fn p = g;
__attribute__((noinline)) int f(void) {
return p();
}
void _start() {
f();
}
---</pre>
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