PH69219: METAL C ASM GENERATING INSTRUCTION USING A NEGATIVE REGISTER

Obtain the fix for this APAR.

APAR status

• Closed as program error.

Error description

• When using optimization, Metal C-generated ASM code is
  containing an instruction using a negative value as a register,
  i.e. "-2" instead of "2".
          LLC   0,-1(14,1)              (*)Cuchar
        +000024
          AHI   14,-1
        +000024
          AHIK  1,-2,-2
        +000039                // Add halfword immediate using
  register "-2" as second operand
          CIJNE 0,125,@2L9
        +000024
          LA    0,2
        +000026
  

Local fix

• Lower the level of optimization.
  

Problem summary

• ****************************************************************
  * USERS AFFECTED: IBM z/OS XL C/C++ V2.4 with the METAL option *
  ****************************************************************
  * PROBLEM DESCRIPTION: The compiler may generate invalid       *
  *                      assembly code that could lead to the    *
  *                      HLASM assembler error:                  *
  *                      ASMA029E Incorrect register             *
  *                      specification                           *
  ****************************************************************
  * RECOMMENDATION: Install the PTF                              *
  ****************************************************************
  N/A
  

Problem conclusion

• Install the PTF
  

Temporary fix

Comments

APAR Information

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

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

Modules/Macros

• CCNECICS CCNECWI  CCNED240 CCNEDSCT CCNEDWRT CCNEFILT CCNEHIFC
  CCNEIPA3 CCNEIPAO CCNEMDEP CCNEOPTP CCNEP    CCNEPP   CCNETBY
  CCNMSGE  CCNMSGT  CCNQIPA
  

Fix information

• Fixed component name

  C/C++ FOR MVS

• Fixed component ID

  56551210A

Applicable component levels

• R7C0 PSY UO07332

     UP26/04/23 P F604

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.