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IV56118: AT 7.1 TL 3, CALLING LONGJMP CAUSES SIGINT TO BE BLOCKED APPLIES TO AIX 7100-03

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APAR status

  • Closed as program error.

Error description

  • If a program calls setjmp/longjmp, it will not be
possible to use Ctl-C to exit the program any more, since
SIGINT will be blocked.

Local fix

  • Using _setjmp and _longjmp can avoid the issue.

Problem summary

  • ****************************************************************
* USERS AFFECTED:
* Systems running the 7100-03 Technology Level with the
* bos.rte.libc fileset below the 7.1.3.15 level.
****************************************************************
* PROBLEM DESCRIPTION:
* If a program calls setjmp/longjmp, it will not be
* possible to use Ctl-C to exit the program any more, since
* SIGINT will be blocked.
****************************************************************
* RECOMMENDATION:
* Install APAR IV56118.
****************************************************************

Problem conclusion

  • longjmp() and siglongjmp() restore the signal mask correctly.

Temporary fix

  • 



Comments


    

  • 7100-03 - use AIX APAR IV56118
7100-04 - use AIX APAR IV57298

    



APAR Information




    

  • APAR number
    IV56118
    • 

  • Reported component name
    AIX V7.1
    • 

  • Reported component ID
    5765H4000
    • 

  • Reported release
    710
    • 

  • Status
    CLOSED  PER
    • 

  • PE
    YesPE
    • 

  • HIPER
    NoHIPER
    • 

  • Submitted date
    2014-02-28
    • 

  • Closed date
    2014-03-20
    • 

  • Last modified date
    2016-05-10
    • 





    

  • APAR is sysrouted FROM one or more of the following:
    

    • 

  • APAR is sysrouted TO one or more of the following:
    

    
IV57298 U866413
    

    • 



Fix information


    

  • Fixed component name
    AIX V7.1
    • 

  • Fixed component ID
    5765H4000
    • 



Applicable component levels


    

  • R710  PSY  U866413
       UP14/05/22  I  1000
    • 








      
              
                            

              

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Document Information


            

            


                        

            Modified date:
            

            10 May 2016
            

            
                      

        


        

        


      

    

  



    

  

  
    
            

          
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