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Full Discussion: Thread parameter in ANSI C makes a segmentation fault
Top Forums Programming Thread parameter in ANSI C makes a segmentation fault Post 302519975 by sehang on Thursday 5th of May 2011 01:45:50 PM
Old 05-05-2011
Quote:
Originally Posted by Corona688
Try fprintf(stderr, "%p\n", v); to see if the pointer value has become corrupted somehow.

If all you're passing is one integer, why allocate memory at all?

void *value=(void *)42;
int ivalue=(int)(value);

If that's not all you're doing, post a more complete portion of your code so we can see what's actually going on.
Thanks, I will use fprintf to catch the pointer value.

Before I post the problem on the forum, I tried to use
Code:
 void *value=(void *)42;
  int ivalue=(int)(value);

But the problem still happened. At that time, I wrote these codes in another way; it is the reason why I use struct to pass parameters.

I have another idea, is it the problem cause by different compile options?
Code:
 gcc -O3 *.c

Code:
  gcc *.c

However, I have 10-20 source files in the project, it is difficult to put all codes in this forum.

Besides, I used outl(...), iopl(...) to control SPI. Are they also affect this threading?
 

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LEARN ABOUT NETBSD

err_get_lib

ERR_GET_LIB(3)							      OpenSSL							    ERR_GET_LIB(3)

NAME

       ERR_GET_LIB, ERR_GET_FUNC, ERR_GET_REASON - get library, function and reason code

LIBRARY

       libcrypto, -lcrypto

SYNOPSIS

	#include <openssl/err.h>

	int ERR_GET_LIB(unsigned long e);

	int ERR_GET_FUNC(unsigned long e);

	int ERR_GET_REASON(unsigned long e);

DESCRIPTION

       The error code returned by ERR_get_error() consists of a library number, function code and reason code. ERR_GET_LIB(), ERR_GET_FUNC() and
       ERR_GET_REASON() can be used to extract these.

       The library number and function code describe where the error occurred, the reason code is the information about what went wrong.

       Each sub-library of OpenSSL has a unique library number; function and reason codes are unique within each sub-library.  Note that different
       libraries may use the same value to signal different functions and reasons.

       ERR_R_... reason codes such as ERR_R_MALLOC_FAILURE are globally unique. However, when checking for sub-library specific reason codes, be
       sure to also compare the library number.

       ERR_GET_LIB(), ERR_GET_FUNC() and ERR_GET_REASON() are macros.

RETURN VALUES

       The library number, function code and reason code respectively.

SEE ALSO

       openssl_err(3), ERR_get_error(3)

HISTORY

       ERR_GET_LIB(), ERR_GET_FUNC() and ERR_GET_REASON() are available in all versions of SSLeay and OpenSSL.

1.0.1i								    2009-07-20							    ERR_GET_LIB(3)
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