After upgrade to xcode13.4, redefinition of struct z_stream_s, gz_header_s, gzfile_s in zlib.h.
I added to guard to avoid the redefinition in the starting and ending
#ifndef ZLIB_H
#define ZLIB_H
------ coding
#endif
Code where the error occurring
typedef struct z_stream_s {
z_const Bytef *next_in; /* next input byte */
uInt avail_in; /* number of bytes available at next_in */
uLong total_in; /* total number of input bytes read so far */
Bytef *next_out; /* next output byte will go here */
uInt avail_out; /* remaining free space at next_out */
uLong total_out; /* total number of bytes output so far */
z_const char *msg; /* last error message, NULL if no error */
struct internal_state FAR *state; /* not visible by applications */
alloc_func zalloc; /* used to allocate the internal state */
free_func zfree; /* used to free the internal state */
voidpf opaque; /* private data object passed to zalloc and zfree */
int data_type; /* best guess about the data type: binary or text
for deflate, or the decoding state for inflate */
uLong adler; /* Adler-32 or CRC-32 value of the uncompressed data */
uLong reserved; /* reserved for future use */
} z_stream;
typedef struct z_stream_s FAR *z_streamp;
typedef struct gz_header_s {
int text; /* true if compressed data believed to be text */
uLong time; /* modification time */
int xflags; /* extra flags (not used when writing a gzip file) */
int os; /* operating system */
Bytef *extra; /* pointer to extra field or Z_NULL if none */
uInt extra_len; /* extra field length (valid if extra != Z_NULL) */
uInt extra_max; /* space at extra (only when reading header) */
Bytef *name; /* pointer to zero-terminated file name or Z_NULL */
uInt name_max; /* space at name (only when reading header) */
Bytef *comment; /* pointer to zero-terminated comment or Z_NULL */
uInt comm_max; /* space at comment (only when reading header) */
int hcrc; /* true if there was or will be a header crc */
int done; /* true when done reading gzip header (not used
when writing a gzip file) */
} gz_header;
struct gzFile_s {
unsigned have;
unsigned char *next;
z_off64_t pos;
};
I replaced the latest zlib.h also but the same redefinition error occurring again.
These files are used to generate the qrcode
redefintion issue occurring in all these files
When i click the error occur it goes to the line where struct z_stream_s is defined
typedef struct z_stream_s {
In that error shows that it has been already defined in the file unzip.c
in the unzip.c when i look into that zlib.h has been include in the both unzip.h and unzip.c
in unzip.h
#ifndef _unz_H
#define _unz_H
#ifdef __cplusplus
extern "C" {
#endif
#ifndef _ZLIB_H
#include "zlib.h"
#endif
#ifndef _ZLIBIOAPI_H
#include "ioapi.h"
#endif
in unzip.c
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include "zlib.h"
#include "unzip.h"
#ifdef STDC
# include <stddef.h>
# include <string.h>
# include <stdlib.h>
#endif
#ifdef NO_ERRNO_H
extern int errno;
#else
# include <errno.h>
#endif
These files are used to generate the QRCODE
and the redefinition error continues on file by file zip.c, zip.h, pngpriv.h, pngstruct.h like that it goes on
Note:The same project is working fine in Xcode 12.4, but in latest Xcode 13 Its shows the redefinition error
Please help me to resolve this issue.
Thanks in advance.
Related
I'm working on a project based on uCOS and the Fusion standard (rather than POSIX) and I want to set my socket into non-blocking mode. The POSIX ioctl command would be ioctl(data,FIONBIO, TRUE); but I can't seem to get it going under Fusion.
In the comments of the header fclioctl.h, I see the following:
/*
* The UNIX definition was as follows:
*
* int ioctl( int fd, int cmd, ... )
*
* But since POSIX does not include "ioctl" as part of it's requirements for
* Fusion the format follows more closely to Win32.
*
* TO get information about a device, a handle to the device or a device in
* it's device stack must be obtained.
*/
fclIoResult_t fclIoctl
(
fclHandle_t hDevice, /* Handle to device */
fclIoCode_t nIoControlCode, /* Function to perform */
fclIoBuffer_t pInBuffer, /* Data to the device */
fclIoSize_t nInBufferSize, /* Size of data to the device */
fclIoBuffer_t pOutBuffer, /* Data from the device */
fclIoSize_t nOutBufferSize, /* Size of buffer to receive data */
fclIoSize_t* pnBytesReturned /* Actual number of bytes received */
);
and for 1fclIoCode_t`, i only see:
/*
* IOCTL Types
*/
typedef unsigned char FIO_BYTE;
typedef unsigned int FIO_WORD;
typedef u32 FIO_DWORD;
#ifndef FCL_IOCODE_T
typedef u32 fclIoCode_t;
#define FCL_IOCODE_T fclIoCode_t
#endif
Does anybody have experience with Fusion and may be able to help out here?
I have the following commands
GPIO_PinOutClear(LED_PORT_E,15)
GPIO_PinModeSet(LED_PORT_A,15,gpioModePushPull,0)
GPIO_PinOutSet(LED_PORT_E,15)
I know that I should put ON value delay OFF value in a loop in order to make the LEDs blink constantly. I have tried to implement it, but it's not working.
Where did I go wrong?
#include <stdint.h>
#include <stdbool.h>
#include "em_device.h"
#include "em_chip.h"
#include "em_cmu.h"
#include "em_emu.h"
#include "bsp.h"
#include "bsp_trace.h"
#define LED_PORT_E gpioPortE
#define LED_PIN_E 15
#define LED_PORT_A gpioPortA
#define LED_PIN_A 15
volatile uint32_t msTicks; /* counts 1ms timeTicks */
void Delay(uint32_t dlyTicks);
/***************************************************************************//**
* #brief SysTick_Handler
* Interrupt Service Routine for system tick counter
******************************************************************************/
void SysTick_Handler(void)
{
msTicks++; /* increment counter necessary in Delay()*/
}
/***************************************************************************//**
* #brief Delays number of msTick Systicks (typically 1 ms)
* #param dlyTicks Number of ticks to delay
******************************************************************************/
void Delay(uint32_t dlyTicks)
{
uint32_t curTicks;
curTicks = msTicks;
while ((msTicks - curTicks) < dlyTicks) ;
}
/***************************************************************************//**
* #brief Main function
******************************************************************************/
int main(void)
{
/* Chip errata */
CHIP_Init();
CMU_ClockEnable(cmuClock_GPIO,true);
/* If first word of user data page is non-zero, enable Energy Profiler trace */
BSP_TraceProfilerSetup();
/* Setup SysTick Timer for 1 msec interrupts */
if (SysTick_Config(CMU_ClockFreqGet(cmuClock_CORE) / 1000)) {
while (1) ;
}
/* Initialize LED driver */
BSP_LedsInit();
BSP_LedSet(0);
GPIO_PinModeSet(LED_PORT_A,15,gpioModePushPull,0);
Delay(1000);
GPIO_PinModeSet(LED_PORT_E,15,gpioModePushPull,0);
while (1) {
GPIO_PinOutClear(LED_PORT_E,15);
GPIO_PinOutSet(LED_PORT_E,15);
}
}
Give delay in while loop .
while (1) {
GPIO_PinOutClear(LED_PORT_E,15);
Delay(1000);
GPIO_PinOutSet(LED_PORT_E,15);
Delay(1000);
}
If configuration of pins is ok then LEDS start blinking.
Where the definition of pcap_t? I just found typedef struct pcap pcap_t; in pcap.h but pcap havn't definition there and wincap manual have same problem without description of this or may be i didn't find right. If this on library then may be someone can tell possible structure?
This is one possible answer (here's the source):
struct pcap {
int fd;
int snapshot;
int linktype;
int tzoff; /* timezone offset */
int offset; /* offset for proper alignment */
struct pcap_sf sf;
struct pcap_md md;
/*
* Read buffer.
*/
int bufsize;
u_char *buffer;
u_char *bp;
int cc;
/*
* Place holder for pcap_next().
*/
u_char *pkt;
/*
* Placeholder for filter code if bpf not in kernel.
*/
struct bpf_program fcode;
char errbuf[PCAP_ERRBUF_SIZE];
};
I have to make tasks as processes in Linux but I don't want the process to execute until all the processes are created. So I thought of moving the processes to wait queue soon after creation and wait until all processes are created.
#include <unistd.h> /* Symbolic Constants */
#include <sys/types.h> /* Primitive System Data Types */
#include <errno.h> /* Errors */
#include <stdio.h> /* Input/Output */
#include <stdlib.h> /* General Utilities */
#include <pthread.h> /* POSIX Threads */
#include <string.h> /* String handling */
#include <sched.h>
#include <linux/kernel.h>
#include <time.h>
#include <sys/resource.h>
#include <stddef.h>
#include <linux/sched.h>
#include <linux/wait.h> /* for wait_event_interruptible() & wake_up_interruptible() */
int done = 0;
static DECLARE_WAIT_QUEUE_HEAD(queue);
int main()
{
int pid1, pid2;
if ((pid1 = fork()) < 0) //create a child process
exit(1);
if ((pid2 = fork()) < 0) //create a child process
exit(1);
if (pid1 == 0) //child process
{
wait_event_interruptible(queue, done == 2);
printf("child 1\n");
}
else //parent process
{
done = done+1;
wake_up_interruptible(&queue);
}
if (pid2 == 0) //child process
{
wait_event_interruptible(queue, done == 2);
printf("child 2\n");
}
else //parent process
{
done = done+1;
wake_up_interruptible(&queue);
}
return 0;
}
But when I tried this sample code it shows these errors.
$ gcc -Wall try.c
try.c:18:8: warning: type defaults to ‘int’ in declaration of ‘DECLARE_WAIT_QUEUE_HEAD’ [-Wimplicit-int]
try.c:18:1: warning: parameter names (without types) in function declaration [enabled by default]
try.c: In function ‘main’:
try.c:33:6: warning: implicit declaration of function ‘wait_event_interruptible’ [-Wimplicit-function-declaration]
try.c:33:31: error: ‘queue’ undeclared (first use in this function)
try.c:33:31: note: each undeclared identifier is reported only once for each function it appears in
try.c:39:2: warning: implicit declaration of function ‘wake_up_interruptible’ [-Wimplicit-function-declaration]
try.c: At top level:
try.c:18:8: warning: ‘DECLARE_WAIT_QUEUE_HEAD’ declared ‘static’ but never defined [-Wunused-function]
When I checked $ man wait_event_interruptible, it says "No manual entry for wait_event_interruptible". So the API is missing in the library. How can I add it to the library? Thanks in advance.
wait_event_interruptible(), wake_up_interruptible() are some of the Kernel's API to create and use wait queues. You cannot use those from the user-land!
If I understand your purpose correctly, what you need to do is to create N processes barrier. If you know the number of the processes (N), you can easily use semaphores: initialize the semaphore with zero, all processes call down() and the last process calls up() N times. You can also use message queues.
You can also use the Linux API for barriers: pthread_barrier_wait and pthread_barrier_init, but I have not used this before.
Pretty straightforward question,
no matter what I do the app crashes on attempting to call open(), below is a part of the code that is relevant. filename is not a garbage value, and contains an absolute path to the file. This fails on the device and the simulator.
printf of filename returns:
/Users/programmingstation7/Library/Application Support/iPhone
Simulator/4.3/Applications/E2BD16DB-FFBA-45D2-B425-96C981380B85/Documents/issue2.zip
relevant backtrace:
#0 0x002132dc in open ()
#1 0x000ddcec in -[ExternalZipInstaller
unzipTheFile] (self=0x68a8d60, _cmd=0x1483f3) at
ExternalZipInstaller.mm:261
code:
#include <stdio.h> /* Standard input/output definitions */
#include <string.h> /* String function definitions */
#include <unistd.h> /* UNIX standard function definitions */
#include <fcntl.h> /* File control definitions */
#include <errno.h> /* Error number definitions */
#include <termios.h> /* POSIX terminal control definitions */
#ifndef O_BINARY
#define O_BINARY 0
#endif
- (void) unzipTheFile
{
BOOL success = YES;
const char* filename = [self.zipName UTF8String];
open(filename, O_RDONLY | O_BINARY);
The documentation for the UTF8String method of NSString has the following note:
The returned C string is automatically freed just as a returned object
would be released; you should copy the C string if it needs to store
it outside of the autorelease context in which the C string is
created.
I think you need to copy the resulting string into your own buffer instead of just pointing to it. The ObjC garbage collector could be deleting your string from under you. Try this instead:
const char filename[MAX_PATH];
strcpy(filename, [self.zipName UTF8String], MAX_PATH);
open(filename, O_RDONLY | O_BINARY);