| Issue |
120516
|
| Summary |
[CUDA] should report error for inline __device__ variable
|
| Labels |
new issue
|
| Assignees |
|
| Reporter |
aywala
|
see [CUDA - inline variable](https://docs.nvidia.com/cuda/cuda-c-programming-guide/index.html#inline-variable)
A namespace scope inline variable declared with __device__ or __constant__ or __managed__ memory space specifier must have internal linkage, if the code is compiled with nvcc in whole program compilation mode.
```cpp
#include <stdio.h>
__device__ inline int a = 10;
__global__ void kernel() {
printf("%d\n",a);
}
int main() {
kernel<<<1,1>>>();
cudaDeviceSynchronize();
}
```
```
nvcc report_error.cu -o report_error
report_error.cu(3): error: An inline __device__/__constant__/__managed__ variable must have internal linkage when the program is compiled in whole program mode (-rdc=false)
__attribute__((device)) inline int a = 10;
^
1 error detected in the compilation of "report_error.cu".
```
but no error report with
``clang++ report_error.cu -o report_error --cuda-gpu-arch=sm_52 -L /usr/local/cuda/lib64 -lcudart -pthread``
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