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Full Discussion: C. To segmentation fault or not to segmentation fault, that is the question.
Top Forums Programming C. To segmentation fault or not to segmentation fault, that is the question. Post 303032353 by nezabudka on Friday 15th of March 2019 02:03:48 PM
Old 03-15-2019
I understood correctly?
On a 64-bit system without parameters, the code gives "Segmentation fault".
Is there no " Segmentation fault" on the 32-bit system when started without parameters?

If my assumptions are correct, when creating a stack in the "main" function of the 64-bit system, a layer in the form of a red zone from the previous stack is filled with machine zeros and the parameters get no value, which leads to segmentation. And when creating a frame in the 32-bit system of this red zone is not! And the garbage from the old frame gets into the parameters and therefore there is no segmentation. But this is still not correct.

P.S. Thanks "Auto Save Recovery" accidentally closed the tab.

--- Post updated at 21:03 ---

I apologize this line should be read like this
Quote:
Is there no " Segmentation fault" on the 32-bit system when started without parameters?
There is no " Segmentation fault" on the 32-bit system when started without parameters
Last edited by nezabudka; 03-15-2019 at 02:54 PM..
 

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LEARN ABOUT OPENSOLARIS

scds_pmf_restart_fm

scds_pmf_restart_fm(3HA)				 Sun Cluster HA and Data Services				  scds_pmf_restart_fm(3HA)

NAME

       scds_pmf_restart_fm - restart fault monitor using PMF

SYNOPSIS

       cc [flags...] -I /usr/cluster/include file -L /usr/cluster/lib  -l  dsdev
       #include <rgm/libdsdev.h>

       scha_err_t scds_pmf_restart_fm(scds_handle_t handle, int instance

DESCRIPTION

       The  scds_pmf_restart_fm() function sends a SIGKILL signal to the fault monitor process tree to kill the fault monitor and then uses PMF to
       restart it. This function uses the MONITOR_STOP_TIMEOUT property as its timeout value. That is, scds_pmf_restart_fm()  waits  at  most  the
       value of the MONITOR_STOP_TIMEOUT property for the process tree to die.

       If the MONITOR_STOP_TIMEOUT property is not explicitly set in the RTR file, the default timeout value is used.

       One way to use this function is to call it in an UPDATE method to restart the monitor, possibly with new parameters.

PARAMETERS

       The following parameters are supported:

       handle		   The handle returned from scds_initialize()

       instance 	   For	resources with multiple instances of the fault monitor, this integer, starting at 0, uniquely identifies the fault
			   monitor instance.  For single instance fault monitors, use 0.

RETURN VALUES

       The scds_pmf_restart_fm() function returns the following:

       0		   The function succeeded.

       non-zero 	   The function failed.

ERRORS

       SCHA_ERR_NOERR	   Function succeeded

       See  scha_calls(3HA) for a description of other error codes.

FILES

       /usr/cluster/include/rgm/libdsdev.h

	   Include file

       /usr/cluster/lib/libdsdev.so

	   Library

ATTRIBUTES

       See attributes(5) for descriptions of the following attributes:

       +-----------------------------+-----------------------------+
       |      ATTRIBUTE TYPE	     |	    ATTRIBUTE VALUE	   |
       +-----------------------------+-----------------------------+
       |Availability		     |SUNWscdev 		   |
       +-----------------------------+-----------------------------+
       |Interface Stability	     |Evolving			   |
       +-----------------------------+-----------------------------+

SEE ALSO

       pmfadm(1M), scha_calls(3HA), signal(3HEAD), attributes(5) , r_properties(5)

Sun Cluster 3.2 						    7 Sep 2007						  scds_pmf_restart_fm(3HA)
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