HP aC++/HP C A.06.25 Release Notes
Table Of Contents
- HP aC++/HP ANSI C Release Notes
- Table of Contents
- 1 HP aC++/HP ANSI C Release Notes
- 2 What’s New in This Version
- New Features in Version A.06.25
- C99 default C compilation mode (Changed)
- Full -AA default C++ compilation mode (Changed)
- -Ax option enables support for several C++0x extensions (New)
- C99 features added to C++0x (New)
- extern template
- Decimal Floating Point supported in C++ mode (New)
- #pragma STDC FLOAT_CONST_DECIMAL64 (New)
- #pragma omp task (New)
- #pragma omp taskwait (New)
- Performance enhancements for +O1 (Changed)
- Non-template static data members initialized outside the class no longer treated as constants in strict mode (Changed)
- Enhancements to allow code to run well on current platforms and future multi-core processors (New)
- New diagnostic messages (New)
- Improved diagnostic messages (Changed)
- Enhanced +wendian warnings (New/Changed)
- New runtime abort messages (New)
- 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
- 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
- New Features in Version A.06.25
- 3 Installation Information
- 4 Compatibility Information
- 5 Known Problems and Workarounds
- Obsolete LANG-STARTUP Files
- codecvt_byname Facet Needed for C Locale Conversions
- Using +check= Options and Running on Test and Deployment Systems
- GPREL22 Relocation Error
- Object Files Generated at +O4 or -ipo
- Incompatibilities Between the Standard C++ Library Ver. 1.2.1 and the Draft Standard
- Conflict Between macros.h and numeric_limits Class (min and max)
- Known Limitations
- 6 Related Documentation
+Ofast (-fast) and +Ofaster Options
The +Ofast and +Ofaster options now cause the data and text page size to be 1MB
instead of 4MB, for increased performance The +Ofast option no longer implies the
unsafe optimizations +Ointeger_overflow=aggressive and +Olibcalls.
Interaction between +Oinit_check and +check=uninit
When +Oinit_check and +check=uninit are used together, warnings will still be
generated at compile time for potentially uninitialized variables, but they will not be
automatically initialized by the compiler, so that lack of initialization can be detected
at runtime.
New Features in Version A.06.10
Version A.06.10 of the HP aC++ compiler provides complete source and binary
compatibility (including OpenMP features) with earlier versions of the A.06.xx family.
HP aC++ compiler version A.06.10 supports the following new features:
• HP Code Advisor
• +cond_rodata Option (Obsoleted)
• +[no]dep_name Option (New)
• +expand_types_in_diag Option (New)
• +FPmode (Enhanced)
• +Ointeger_overflow Option (Default Changed)
• +Onolibcalls= Option (New)
• +wendian Option (New)
• +wlint Option (Enhanced)
• +wsecurity= Option (New)
• System-wide option configuration (New)
• [NO]PTRS_TO_GLOBALS Pragma (New)
• -AA -D_HP_NONSTD_FAST_IOSTREAM performance Macro (New)
• New function attributes
• Improved Diagnostics
• C++ Standard Library
HP Code Advisor
This release introduces a new tool "HP Code Advisor", that can be used for detecting
various programmer errors in C/C++ source code. Use this tool to identify potential
coding errors, porting issues and security errors.
The HP Code Advisor is being made available on both HP-UX PA and Integrity servers.
It leverages the advanced analysis capabilities of the C/C++ compilers for the Integrity
servers.
New Features in Version A.06.10 37