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Small improvement to the use of GetFileType:

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* assert that the return value is one of the documented values on msdn.
* on FILE_TYPE_UNKNOWN, check GetLastError.

Unfortunately I can't think of a way to get a FILE_TYPE_UNKNOWN on a test.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@186595 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Rafael Espindola 2013-07-18 18:42:52 +00:00
parent be9dd85f44
commit ef69f54fec
1 changed files with 8 additions and 1 deletions
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9
lib/Support/Windows/Path.inc
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@ -581,7 +581,14 @@ static error_code getStatus(HANDLE FileHandle, file_status &Result) {
switch (::GetFileType(FileHandle)) { switch (::GetFileType(FileHandle)) {
default: default:
case FILE_TYPE_UNKNOWN: llvm_unreachable("Don't know anything about this file type");
case FILE_TYPE_UNKNOWN: {
DWORD Err = ::GetLastError();
if (Err != NO_ERROR)
return windows_error(Err);
Result = file_status(file_type::type_unknown);
return error_code::success();
}
case FILE_TYPE_DISK: case FILE_TYPE_DISK:
break; break;
case FILE_TYPE_CHAR: case FILE_TYPE_CHAR: