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HP Integrity Servers: HP aC++/HP ANSI C Release Notes

Chapter 2 What’s New in This Version

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New Features in Version A.06.20

Decimal floating-point arithmetic (HP-UX 11.31 only) (New)
+annotate=structs (New)
+check=lock (New)
+check=thread (New)
+O[no]autopar now supported in C++ Mode (New)
+O[no]dynopt (HP-UX 11.31 only) (New)
+inline_level num (Enhanced)
-dumpversion (New)
#include_next (New)
#pragma diag_push (New)
#pragma diag_pop (New)
+Oinlinebudget is deprecated (Change)
In next release, default C compilation mode will change from C89 to C99
In next release, default C++ compilation mode will change to full -AA

New Features in Version A.06.15

printf, fprintf Optimization (New)
+Wmacro Option (New)
+Wcontext_limit Option (New)
+wperfadvice Option (New)
+Wv Option (New)
+wlock Option (New)
+O[no]autopar Option (New)
+O[no]loop_block Option (New)
+O[no]loop_unroll_jam (Default Change)
+Olit=all (Default Change for HP C)
+macro_debug= (New)
+pathtrace (New)
+check Suboptions (New)
-Bhidden_def (New)
-dM (New)
#pragma OPT_LEVEL INITIAL (New)
#pragma OPTIMIZE (Deprecated)
#pragma [NO]INLINE (New for C++ Mode)
_Asm_ld, _Asm_ldf, _Asm_st, _Asm_stf Intrinsics (New)
Debugging Code Compiled with Opt Levels above +O1 Is Supported
__attribute__ ((visibility("default"|"protected"|"hidden"))) Added (New)
__attribute__ ((warn_unused_result)) Added (New)
Change in treatment of cv-qualified assignment operators

New Features in Version A.06.12

+Ofast (-fast) and +Ofaster Options
Interaction between +Oinit_check and +check=uninit

New Features in Version A.06.10

HP Code Advisor
+cond_rodata Option (Obsoleted)
+[no]dep_name Option (New)
+expand_types_in_diag Option (New)
+FPmode Option (Enhanced)
+Ointeger_overflow (Default Changed)
+Onolibcalls= Option (New)
+wendian Option (New)
+wlint Option (Enhanced)
+wsecurity= Option (Enhanced)
System-wide Option Configuration
[NO]PTRS_TO_GLOBALS Pragma
-AA -D_HP_NONSTD_FAST_IOSTREAM Performance Improvement Macro
New Function Attributes
Improved Diagnostics
C++ Standard Library Change

Earlier Versions

This chapter gives an overview of the new command line options and features introduced in this version of the HP aC++/HP C compiler.

Version A.06.20 of the HP aC++/HP C compiler provides complete source and binary compatibility with earlier versions of the A.06.xx family.

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