H-Series Application Migration Guide (H06.07+, J06.03+)

Contents

H-Series Application Migration Guide—429855-008

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4. General Programming Issues (continued)

Creating Unstructured Enscribe Files Might Require Program Changes 4-6

DDL Dictionary Conversion Required 4-7

setjmp Buffers Have Different Size and Alignment Requirements 4-7

5. Native C and C++ Migration Tasks

Using the TNS/E Native C and C++ Compilers 5-1

Possible Source Code Changes 5-2

Check Programs that Use NaN Values 5-2

Change Programs that Rely on Proprietary Floating-Point Format 5-2

Avoiding Floating-Point Conflicts 5-2

Check C/C++ Main Routine Object File Name 5-4

Check Programs With Variable-Length Parameter Lists 5-4

Using setjmp() in Functions Marked as Inline 5-4

Using the semctl() Function With a Fourth Parameter 5-4

Check Use of Feature Test Macro 5-5

Changed Pragmas and Flags 5-5

Changed Pragmas 5-6

INSPECT/NOINSPECT Pragmas Select Different Debuggers 5-6

C89 Flags Changed 5-7

Using Conditional Compilation in C and C++ Programs 5-7

Native C and C++ Run-Time Library and Tools.h++ Migration Issues 5-8

Library Names Changed 5-9

Tools.h++ Version 6 Class Library Not Supported 5-9

Toolsh++ TLHMAP File Names Changed 5-10

Migrating to the C++ Standard Library VERSION2 5-10

Migrating to the C++ Standard Library VERSION3 5-10

LIBCOBEY and libc.obey Files Replaced 5-11

OSS Programs That Use Pthreads 5-11

Using the C++ Neutral Dialect 5-11

Undefined Behavior in C and C++ Programs 5-13

New H-Series C and C++ Features 5-13

Pragmas 5-14

Maximum Data Alignment 5-14

64-Bit Data Type and String Conversion Functions 5-14

6. Native COBOL Migration Tasks

Using the TNS/E Native COBOL Compiler 6-1

Directives Changed 6-2