https://community.intel.com/t5/Software-Archive/Thread-NULL-SECURITY-ATTRIBUTES/m-p/987423#M27488 NULL_SECURITY_ATTRIBUTES is not declared, so it becomes an implicitly declared variable which is uninitialized. After the line:<BR /><BR />USE DFMT<BR /><BR />add the line:<BR /><BR />USE DFWINTY<BR /><BR />That will provide the declaration of NULL_SECURITY_ATTRIBUTES.<BR /><BR />Steve Tue, 02 Apr 2002 12:02:47 GMT Steven_L_Intel1 2002-04-02T12:02:47Z https://community.intel.com/t5/Software-Archive/Thread-NULL-SECURITY-ATTRIBUTES/m-p/987422#M27487 Hi, <BR />I am running a Thread from my program but on compiling the following code I get some warning. <BR /> <BR />subroutine XXX <BR />use dfmt <BR />implicit none <BR />integer hThread2,ThreadID3 ,NULL_SECURITY_ATTRIBUTES <BR />hThread2=CreateThread(NULL_SECURITY_ATTRIBUTES,0, &amp; <BR /> W_search_entry2, 0, 0, LOC(ThreadID3)) <BR /> <BR />Warning: Variable NULL_SECURITY_ATTRIBUTES is used before its value has been defined: <BR />hThread2=CreateThread(NULL_SECURITY_ATTRIBUTES,0, &amp; <BR /> <BR />Can you help me, <BR />RJAR Tue, 02 Apr 2002 11:04:18 GMT https://community.intel.com/t5/Software-Archive/Thread-NULL-SECURITY-ATTRIBUTES/m-p/987422#M27487 rjar 2002-04-02T11:04:18Z https://community.intel.com/t5/Software-Archive/Thread-NULL-SECURITY-ATTRIBUTES/m-p/987423#M27488 NULL_SECURITY_ATTRIBUTES is not declared, so it becomes an implicitly declared variable which is uninitialized. After the line:<BR /><BR />USE DFMT<BR /><BR />add the line:<BR /><BR />USE DFWINTY<BR /><BR />That will provide the declaration of NULL_SECURITY_ATTRIBUTES.<BR /><BR />Steve Tue, 02 Apr 2002 12:02:47 GMT https://community.intel.com/t5/Software-Archive/Thread-NULL-SECURITY-ATTRIBUTES/m-p/987423#M27488 Steven_L_Intel1 2002-04-02T12:02:47Z