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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW - cfi-icall + ThinLTO: no jump table entry created for functions defined in both ThinLTO module and merged module"
href="https://bugs.llvm.org/show_bug.cgi?id=33832">33832</a>
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<th>Summary</th>
<td>cfi-icall + ThinLTO: no jump table entry created for functions defined in both ThinLTO module and merged module
</td>
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<th>Product</th>
<td>libraries
</td>
</tr>
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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
</td>
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<th>Component</th>
<td>Interprocedural Optimizations
</td>
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<th>Assignee</th>
<td>unassignedbugs@nondot.org
</td>
</tr>
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<th>Reporter</th>
<td>peter@pcc.me.uk
</td>
</tr>
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<th>CC</th>
<td>llvm-bugs@lists.llvm.org
</td>
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<p>
<div>
<pre>$ cat icall1.cpp
inline void f() {}
void sink(void (*)());
static struct A {
A() { sink(f); }
} a;
$ cat icall2.cpp
inline void f() {}
void sink(void (*)()) {}
int main() {
void (*p)() = f;
p();
}
$ clang++ icall{1,2}.cpp -fsanitize=cfi-icall -flto=thin -fuse-ld=lld -O2
-fno-sanitize-trap=cfi-icall -g
$ ./a.out
icall2.cpp:7:3: runtime error: control flow integrity check for type 'void ()'
failed during indirect function call
/tmp/icall1.cpp:1: note: f() defined here</pre>
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