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<base href="https://llvm.org/bugs/" />
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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW " title="NEW --- - EH: clang fails on assertion on complex doubles multiplication when EH is enabled" href="https://urldefense.proofpoint.com/v2/url?u=https-3A__llvm.org_bugs_show-5Fbug.cgi-3Fid-3D24196&d=AwMBaQ&c=8hUWFZcy2Z-Za5rBPlktOQ&r=pF93YEPyB-J_PERP4DUZOJDzFVX5ZQ57vQk33wu0vio&m=fMTMSorFcbouDtF8rRBQAirW0OMhqys5sLquLj4R8oY&s=N6hgTJX2ur6JCWqUZzJAHHGXWlbld3NT3uyDhSQX358&e=">24196</a>
</td>
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<th>Summary</th>
<td>EH: clang fails on assertion on complex doubles multiplication when EH is enabled
</td>
</tr>
<tr>
<th>Product</th>
<td>clang
</td>
</tr>
<tr>
<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>Linux
</td>
</tr>
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<th>Status</th>
<td>NEW
</td>
</tr>
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<th>Severity</th>
<td>normal
</td>
</tr>
<tr>
<th>Priority</th>
<td>P
</td>
</tr>
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<th>Component</th>
<td>Frontend
</td>
</tr>
<tr>
<th>Assignee</th>
<td>unassignedclangbugs@nondot.org
</td>
</tr>
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<th>Reporter</th>
<td>d.zobnin.bugzilla@gmail.com
</td>
</tr>
<tr>
<th>CC</th>
<td>llvmbugs@cs.uiuc.edu
</td>
</tr>
<tr>
<th>Classification</th>
<td>Unclassified
</td>
</tr></table>
<p>
<div>
<pre>$ cat test.cpp
struct A {
int x;
A() { x = 10; }
~A() { x = 20; }
};
int main() {
{
A a;
double __complex__ d;
double __complex__ d1 = d * d;
}
return 0;
}
$ clang -cc1 -fexceptions -fcxx-exceptions -O0 -emit-llvm test.cpp -o test.ll
llvm/include/llvm/Support/Casting.h:237: typename llvm::cast_retty<X,
Y*>::ret_type llvm::cast(Y*) [with X = llvm::CallInst; Y = llvm::Instruction;
typename llvm::cast_retty<X, Y*>::ret_type = llvm::CallInst*]: Assertion
`isa<X>(Val) && "cast<Ty>() argument of incompatible type!"' failed.
Stack trace leads us to the function
ComplexExprEmitter::EmitComplexBinOpLibCall in file
llvm/tools/clang/lib/CodeGen/CGExprComplex.cpp, line:
cast<llvm::CallInst>(Call)->setCallingConv(CGF.CGM.getBuiltinCC());
This issue occurs due to EH enabling if landing pad is required at the moment
of complex numbers multiplication (Call is not actually a llvm::CallInst*, but
llvm::InvokeInst*).
I will handle this case.
Denis Zobnin
=============
Software Engineer
Intel Compiler Team
Intel</pre>
</div>
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