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<base href="https://bugs.llvm.org/">
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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW - clang -x cuda requires duplicating __host__ and __device__ specifiers"
href="https://bugs.llvm.org/show_bug.cgi?id=34508">34508</a>
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<th>Summary</th>
<td>clang -x cuda requires duplicating __host__ and __device__ specifiers
</td>
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<th>Product</th>
<td>clang
</td>
</tr>
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<th>Version</th>
<td>unspecified
</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>
</tr>
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<th>Severity</th>
<td>enhancement
</td>
</tr>
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<th>Priority</th>
<td>P
</td>
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<th>Component</th>
<td>CUDA
</td>
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<th>Assignee</th>
<td>unassignedclangbugs@nondot.org
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<th>Reporter</th>
<td>ibiryukov@google.com
</td>
</tr>
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<th>CC</th>
<td>llvm-bugs@lists.llvm.org
</td>
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<p>
<div>
<pre>The following code compiles with nvcc and fails to compile with clang.
struct X {
__device__ __host__ int foo();
};
int X::foo() {
return 10;
}
namespace ns {
__device__ __host__ int bar();
}
int ns::bar() {
return 20;
}
clang assumes __host__ specifier on out-of-line definitions, producing
following errors:
cuda2.cu:6:12: error: __host__ function 'foo' cannot overload __host__
__device__ function 'foo'
int X::foo() {
^
cuda2.cu:2:33: note: previous declaration is here
__device__ __host__ int foo();
^
cuda2.cu:14:13: error: __host__ function 'bar' cannot overload __host__
__device__ function 'bar'
int ns::bar() {
^
cuda2.cu:11:33: note: previous declaration is here
__device__ __host__ int bar();
^
It seems that nvcc is doing the right thing here, not requiring to duplicate
specifiers.</pre>
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</p>
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