# include & lt; windows.h> 
#include  
#include  

Typedef struct 
{
DWORD dwParameter;//DWORD parameter to fiber (unused) 
DWORD dwFiberResultCode;//GetLastError () the result code 
HANDLE hFile;//handle to operate on 
DWORD dwBytesProcessed;//number of bytes processed 
PFIBERDATASTRUCT} FIBERDATASTRUCT, * and * LPFIBERDATASTRUCT; 

# define RTN_OK 0 
# define RTN_USAGE 1 
# define RTN_ERROR 13 

# define FIBER_COUNT 3 

1//# define READ_FIBER array index to read fiber 
2//# define WRITE_FIBER array index to write fiber 

Int __cdecl _tmain (int arg c, TCHAR * argv []) 
{
LPFIBERDATASTRUCT fs. 

if (argc ! 
=3){
Usage: printf (" % ls & lt; SourceFile>  \ n ", argv [0]); 
Return RTN_USAGE; 
}

Fs=(LPFIBERDATASTRUCT) HeapAlloc (
GetProcessHeap (), 0, 
Sizeof (FIBERDATASTRUCT) * FIBER_COUNT); 

If (fs==NULL) 
{
Printf (" HeapAlloc error (% d) \ n ", GetLastError ()); 
Return RTN_ERROR; 
}

Fs [READ_FIBER] hFile=CreateFile (
Argv [1], 
GENERIC_READ, 
FILE_SHARE_READ, 
NULL, 
OPEN_EXISTING, 
FILE_FLAG_SEQUENTIAL_SCAN. 
NULL 
); 

If (fs) [r]. READ_FIBER hFile==INVALID_HANDLE_VALUE) 
{
Printf (" CreateFile error (% d) \ n ", GetLastError ()); 
Return RTN_ERROR; 
}

Fs [WRITE_FIBER] hFile=CreateFile (
Argv [2], 
GENERIC_WRITE, 
0, 
NULL, 
CREATE_NEW. 
FILE_FLAG_SEQUENTIAL_SCAN. 
NULL 
); 

If (fs) [r]. WRITE_FIBER hFile==INVALID_HANDLE_VALUE) 
{
Printf (" CreateFile error (% d) \ n ", GetLastError ()); 
Return RTN_ERROR; 
}

Fs [READ_FIBER] dwParameter=0 x12345678; 
Fs [WRITE_FIBER] dwParameter=0 x54545454; 

The CloseHandle (fs) [r]. READ_FIBER hFile); 
The CloseHandle (fs) [r]. WRITE_FIBER hFile); 

HeapFree (GetProcessHeap (), and 0, fs); 

Return RTN_OK; 
} 

Line 78, vc2019 suggest the use of an uninitialized memory problems


Code should be how to change?

CodePudding user response:

LPFIBERDATASTRUCT fs.
Is a pointer?