[Bug libc/4635] New: sigandset(), sigorset() and sigisemptyset() functions crash if one of the parameters is NULL

["lex at ispras dot ru" <sourceware-bugzilla at sourceware dot org>]

The LSB 3.1 description of sigandset() function specifies that if one or more 
of the function parameters was a null pointer then EINVAL error shall occure. 
But on SLES 10 this function crashes in this case (libc version 2.4). Buy the 
way, on Red Hat 4 64 bits (libc version 2.3.4) it works as specified in LSB 3.1.
The same is truth about sigorset() and sigisemptyset() functions. 
Below is the example code.

#include <stdio.h>
#include <signal.h>


int main(int argc, char* argv[])
{
	sigset_t set;
	sigemptyset(&set);

	int res1 = sigandset(&set, &set, &set); // OK
	int res2 = sigandset(&set, &set, NULL); // CRASH
	int res3 = sigorset(&set, &set, &set);  // OK
	int res4 = sigorset(&set, NULL, &set);  // CRASH
	int res5 = sigisemptyset(&set);         // OK 
	int res6 = sigisemptyset(NULL);         // CRASH
	
	return 0;
}

-- 
           Summary: sigandset(), sigorset() and sigisemptyset() functions
                    crash if one of the parameters is NULL
           Product: glibc
           Version: 2.4
            Status: NEW
          Severity: normal
          Priority: P2
         Component: libc
        AssignedTo: drepper at redhat dot com
        ReportedBy: lex at ispras dot ru
                CC: glibc-bugs at sources dot redhat dot com


http://sourceware.org/bugzilla/show_bug.cgi?id=4635

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