| Issue |
147131
|
| Summary |
[libc++] Calling `std::filesystem::canonical` on ramdisks throws an exception on Windows
|
| Labels |
libc++
|
| Assignees |
|
| Reporter |
wepavos293
|
Calling `std::filesystem::canonical` on paths located on ramdisk throws `std::__1::__fs::filesystem::filesystem_error`. It's caused by internal call to `GetFinalPathNameByHandleW`.
The problematic call:
[posix_compat.h#L344](https://github.com/llvm/llvm-project/blob/main/libcxx/src/filesystem/posix_compat.h#L344)
A similar issue was resolved in the past by adding special handling for these cases:
[Path.inc#L384](https://github.com/llvm/llvm-project/blob/main/llvm/lib/Support/Windows/Path.inc#L384)
**Reproduction Steps:**
1. Create a ramdisk using software like ImDisk.
2. Compile and run the following code on the ramdisk:
```
#include <filesystem>
#include <iostream>
int main(){
std::cout << std::filesystem::canonical(std::filesystem::current_path()) << std::endl;
return 0;
}
```
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