A fix is available
APAR status
Closed as program error.
Error description
MOVE statement between 1 byte data items not executed
Local fix
N/A
Problem summary
**************************************************************** * USERS AFFECTED: All users of the IBM Automatic Binary * * Optimizer (ABO) for z/OS * **************************************************************** * PROBLEM DESCRIPTION: In rare cases a MOVE statement between * * 1 byte data items of the same display, * * internal decimal or alphanumeric type * * may not be executed in the specific * * set of conditions below. * * * * For example, a statement such as MOVE * * X TO Y may not be executed when: * * * * - the data items X and Y are each 1 * * byte and declared to be the same * * display, internal decimal or * * alphanumeric type * * - the data items X and Y are declared * * to be directly adjacent in storage * * - the MOVE X TO Y statement directly * * follows a conditionally executed block * * of code * * - the conditionally executed block of * * code contains a single MOVE statement * * of a literal to data item X * * * * Example source for one case is below: * * * * DATA DIVISION. * * WORKING-STORAGE SECTION. * * 01 WS-GROUP. * * 05 X PIC 9(1). * * 05 Y PIC 9(1). * * PROCEDURE DIVISION. * * IF some-condition * * MOVE 1 TO X. * * MOVE X TO Y. * * * * When some-condition is false the * * conditional block is not executed, and * * due to the problem described in this * * APAR, the MOVE X to Y statement is * * also not executed. * * * * When some-condition is true the * * conditional block is executed and the * * MOVE X to Y statement will be executed * * so the problem described in this APAR * * does not happen. * * * * The correct behavior is that the MOVE * * X to Y statement should be executed * * regardless of the value of * * some-condition. * **************************************************************** * RECOMMENDATION: Apply provided service * **************************************************************** ABO was modified to correctly optimize these modules
Problem conclusion
The ABO optimized module now behaves correctly for these MOVE statements
Temporary fix
Comments
APAR Information
APAR number
PI91174
Reported component name
AUTO BINARY OPT
Reported component ID
5697AB100
Reported release
130
Status
CLOSED PER
PE
NoPE
HIPER
NoHIPER
Special Attention
NoSpecatt / Xsystem
Submitted date
2017-12-06
Closed date
2017-12-06
Last modified date
2018-01-03
APAR is sysrouted FROM one or more of the following:
APAR is sysrouted TO one or more of the following:
UI52466 UI52467
Modules/Macros
BOZBXITA BOZEXE1 BOZJIVP BOZMSGE BOZMSGK BOZMSGT BOZOBJ1 BOZOPT BOZRIDT BOZSRC1
Fix information
Fixed component name
AUTO BINARY OPT
Fixed component ID
5697AB100
Applicable component levels
Fix is available
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Document Information
Modified date:
03 January 2018