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PI95829: STRUCT CONTROL BLOCK POINTER PASSED TO INLINED FUNCTION NOT SET CORRECTLY

A fix is available

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APAR status

  • Closed as program error.

Error description

  • After inlining a function that allocates a block of memory, the
    pointer to the memory is optimized away, and subsequent
    references to the memory result in an 0C4 segmentation fault.
    
    
       === EXAMPLE ===
    
    MISSING LOAD:
    010947 |  * IndexBlock->NextBlock = CurIndexBlock;
    010947 |  LG r15,#SPILL2(,r13,376)
    010947 |  ST r15,(*)IndexBlock_T.NextBlock(,r5,0)
    
    PRESENT LOAD:
    010947 |  * IndexBlock->NextBlock = CurIndexBlock;
    010947 |  L  r14,pNewIndexBlock(,r13,216)   // ***
    010947 |  LG r7,#SPILL2(,r13,312)
    010947 |  ST r7,(*)IndexBlock_T.NextBlock(,r14,0)
    

Local fix

  • Disable inlining or use #pragma noinline to prevent inlining of
    the problem function.
    

Problem summary

  • ****************************************************************
    * USERS AFFECTED: Users using the HGPR option                  *
    ****************************************************************
    * PROBLEM DESCRIPTION: Runtime segmentation failure            *
    ****************************************************************
    .
    

Problem conclusion

  • Apply service provided.
    

Temporary fix

Comments

APAR Information

  • APAR number

    PI95829

  • Reported component name

    C/C++ FOR MVS

  • Reported component ID

    56551210A

  • Reported release

    791

  • Status

    CLOSED PER

  • PE

    NoPE

  • HIPER

    NoHIPER

  • Special Attention

    NoSpecatt / Xsystem

  • Submitted date

    2018-03-27

  • Closed date

    2018-03-29

  • Last modified date

    2018-08-01

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

    PI85577

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

Modules/Macros

  • CCNECICS CCNECWI  CCNED211 CCNEDSCT CCNEDWRT CCNEFILT CCNEHIFC
    CCNEMDEP CCNEOPTP CCNEP    CCNEPP   CCNETBY  CCNMSGE  CCNMSGT
    

Fix information

  • Fixed component name

    C/C++ FOR MVS

  • Fixed component ID

    56551210A

Applicable component levels

  • R791 PSY UI54849

       UP18/04/25 P F804

Fix is available

  • Select the PTF appropriate for your component level. You will be required to sign in. Distribution on physical media is not available in all countries.

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Document Information

Modified date:
09 August 2024