Bug: fgets always reads from stdin
Andriy Palamarchuk
apa3a at yahoo.com
Mon Mar 11 07:14:08 CST 2002
I'm trying to use function fgets, but it always reads
from standard input.
Here is the test code:
{
FILE *reg_file = fopen("1.txt", "r");
if (!reg_file)
{
perror("");
printf("Can't open file \"%s\"\n", "1.txt");
exit(1);
}
{
char buf[100];
while (fgets(buf, 100, reg_file))
{
printf("%s", buf);
}
exit(1);
}
}
The same code works correctly when compiled without
Wine.
One starange thing here that I do not see call to
function fopen in the log.
End of the log for the test application, called with
--debugmsg +all, critical sections call are removed
(note, the mail client wrapped the lines)
0806eff8:Call kernel32.GetCommandLineA() ret=40021019
0806eff8:Ret kernel32.GetCommandLineA()
retval=40350358 ret=40021019
0806eff8:Call kernel32.GetStartupInfoA(405a6e4c)
ret=40021039
0806eff8:Ret kernel32.GetStartupInfoA()
retval=400c6934 ret=40021039
0806eff8:Call ntdll.__wine_get_main_args(40024ea4)
ret=40021053
0806eff8:Ret ntdll.__wine_get_main_args()
retval=00000001 ret=40021053
0806eff8:Call kernel32.GetModuleHandleA(00000000)
ret=4002106a
0806eff8:Ret kernel32.GetModuleHandleA()
retval=40020000 ret=4002106a
0806eff8:Call msvcrt.fgets(405a6db4
"\344\307\016@",00000064,08050f70) ret=4001e21b
0806eff8:trace:msvcrt:MSVCRT_fgets :file(0x8050f70) fd
(0) str (0x405a6db4) len (100)
0806eff8:Call
kernel32.ReadFile(00000004,405a6bbf,00000001,405a6b98,00000000)
ret=406878e6
0806eff8:trace:file:ReadFile 4 0x405a6bbf 1 0x405a6b98
(nil)
0806eff8: get_handle_fd( handle=4, access=80000000 )
0806eff8: *fd* 4 -> 8
0806eff8: get_handle_fd() = 0 { fd=-1, type=1, flags=0
}
0806eff8: set_handle_info( handle=4, flags=0, mask=0,
fd=10 )
0806eff8: set_handle_info() = 0 { old_flags=1,
cur_fd=10 }
#here I entered line with character W
0806eff8:Ret kernel32.ReadFile() retval=00000001
ret=406878e6
0806eff8:Call
kernel32.ReadFile(00000004,405a6bbf,00000001,405a6b98,00000000)
ret=406878e6
0806eff8:trace:file:ReadFile 4 0x405a6bbf 1 0x405a6b98
(nil)
0806eff8: get_handle_fd( handle=4, access=80000000 )
0806eff8: get_handle_fd() = 0 { fd=10, type=1, flags=0
}
0806eff8:Ret kernel32.ReadFile() retval=00000001
ret=406878e6
0806eff8:trace:msvcrt:MSVCRT_fgets :got 'W
'
0806eff8:Ret msvcrt.fgets() retval=405a6db4
ret=4001e21b
0806eff8:Call
kernel32.WriteFile(00000008,405a646c,00000002,405a6428,00000000)
ret=4068818b
0806eff8:trace:file:WriteFile 8 0x405a646c 2
0x405a6428 (nil)
0806eff8: get_handle_fd( handle=8, access=40000000 )
0806eff8: *fd* 8 -> 9
0806eff8: get_handle_fd() = 0 { fd=-1, type=1, flags=0
}
0806eff8: set_handle_info( handle=8, flags=0, mask=0,
fd=11 )
0806eff8: set_handle_info() = 0 { old_flags=1,
cur_fd=11 }
0806eff8:Ret kernel32.WriteFile() retval=00000001
ret=4068818b
0806eff8:Call msvcrt.fgets(405a6db4
"W\n",00000064,08050f70) ret=4001e21b
0806eff8:trace:msvcrt:MSVCRT_fgets :file(0x8050f70) fd
(0) str (0x405a6db4) len (100)
0806eff8:Call
kernel32.ReadFile(00000004,405a6bbf,00000001,405a6b98,00000000)
ret=406878e6
0806eff8:trace:file:ReadFile 4 0x405a6bbf 1 0x405a6b98
(nil)
0806eff8: get_handle_fd( handle=4, access=80000000 )
0806eff8: get_handle_fd() = 0 { fd=10, type=1, flags=0
}
#here I entered ^D to close stdin
0806eff8:Ret kernel32.ReadFile() retval=00000001
ret=406878e6
0806eff8:trace:msvcrt:_read :EOF
0806eff8:trace:msvcrt:MSVCRT_fgets :nothing read
0806eff8:Ret msvcrt.fgets() retval=00000000
ret=4001e21b
0806eff8:Call msvcrt.exit(00000001) ret=4001e229
0806eff8:trace:msvcrt:MSVCRT_exit (1)
0806eff8:trace:msvcrt:_lock (13)
0806eff8:trace:msvcrt:_lock (17)
0806eff8:trace:msvcrt:_lock : creating lock #13
0806eff8:trace:msvcrt:_unlock (17)
0806eff8:trace:msvcrt:__MSVCRT__call_atexit 0 atext
functions to call
0806eff8:trace:msvcrt:_unlock (13)
0806eff8:Call kernel32.ExitProcess(00000001)
ret=40686022
0806eff8:trace:module:MODULE_InitDLL
(regedit,PROCESS_DETACH,0x1) - CALL
0806eff8:trace:module:MODULE_InitDLL
(0x403509b0,PROCESS_DETACH,0x1) - RETURN 1
0806eff8:trace:module:MODULE_InitDLL
(msvcrt.dll,PROCESS_DETACH,0x1) - CALL
0806eff8:Call PE DLL
(proc=0x4068b1c0,module=4067c000,type=0,res=0x1)
0806eff8:trace:msvcrt:MSVCRT_Init (0x4067c000,
DLL_PROCESS_DETACH, 0x1) pid(134659496),
tid(134672376), tls(0)
0806eff8:trace:msvcrt:msvcrt_free_mt_locks :
uninitializing all mtlocks
0806eff8:trace:msvcrt:_fcloseall :closed (0) handles
0806eff8:trace:msvcrt:msvcrt_free_console :Closing
console handles
0806eff8:Call kernel32.CloseHandle(00000004)
ret=406810d3
0806eff8: close_handle( handle=4 )
0806eff8: close_handle() = 0 { fd=10 }
0806eff8:Ret kernel32.CloseHandle() retval=00000001
ret=406810d3
0806eff8:Call kernel32.CloseHandle(ffffffff)
ret=406810de
0806eff8: close_handle( handle=-1 )
0806eff8: close_handle() = INVALID_HANDLE { fd=0 }
0806eff8:Ret kernel32.CloseHandle() retval=00000000
ret=406810de
0806eff8:Call
kernel32.FreeEnvironmentStringsA(403504b0)
ret=406832ef
0806eff8:Ret kernel32.FreeEnvironmentStringsA()
retval=00000001 ret=406832ef
0806eff8:Call
kernel32.FreeEnvironmentStringsW(403513d0)
ret=406832fa
0806eff8:trace:heap:RtlFreeHeap
(40350000,00000002,403513d0): returning TRUE
0806eff8:Ret kernel32.FreeEnvironmentStringsW()
retval=00000001 ret=406832fa
0806eff8:Call kernel32.TlsFree(00000000) ret=4068b545
0806eff8:Ret kernel32.TlsFree() retval=00000001
ret=4068b545
0806eff8:trace:msvcrt:MSVCRT_Init finished process
free
0806eff8:Ret PE DLL
(proc=0x4068b1c0,module=4067c000,type=0,res=0x1)
retval=1
0806eff8:trace:module:MODULE_InitDLL
(0x40350d1c,PROCESS_DETACH,0x1) - RETURN 1
0806eff8:trace:module:MODULE_InitDLL
(advapi32.dll,PROCESS_DETACH,0x1) - CALL
0806eff8:trace:module:MODULE_InitDLL
(0x40350bf0,PROCESS_DETACH,0x1) - RETURN 1
0806eff8:trace:module:MODULE_InitDLL
(kernel32.dll,PROCESS_DETACH,0x1) - CALL
0806eff8:Call PE DLL
(proc=0x406247fc,module=40615000,type=0,res=0x1)
0806eff8:Ret PE DLL
(proc=0x406247fc,module=40615000,type=0,res=0x1)
retval=1
0806eff8:trace:module:MODULE_InitDLL
(0x40350e2c,PROCESS_DETACH,0x1) - RETURN 1
0806eff8:trace:module:MODULE_InitDLL
(ntdll.dll,PROCESS_DETACH,0x1) - CALL
0806eff8:trace:module:MODULE_InitDLL
(0x403508ac,PROCESS_DETACH,0x1) - RETURN 1
0806eff8: terminate_process( handle=-1, exit_code=1 )
0806eff8: terminate_process() = 0 { self=1 }
0806eff8: *killed* exit_code=1
/home/apalamarchuk/.wine/user.reg: saving key
\\User\\apalamarchuk
/home/apalamarchuk/.wine/system.reg: saving key
\\Machine
/home/apalamarchuk/.wine/userdef.reg: saving key
\\User\\.Default
Server: exiting (pid=9451)
The bug, probably, is very simple and somebody can
give me a clue basing on the trace.
I have fresh CVS Wine.
Thanks,
Andriy Palamarchuk
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