Chapter 2 What’s New in This Version

Table of Contents

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 Added (New)
Debugging Code Compiled with Opt Levels above +O1 Is Supported

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

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

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.06.15 of the HP aC++ compiler provides complete source and binary compatibility with earlier versions of the A.06.xx family. Version A.06.15 of the HP C compiler has very few incompatibilities with earlier versions. These incompatibilities have minimum or no impact on applications migrated to the Integrity platform.

Chapter 2 What’s New in This Version

Technical documentation

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