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
Use "/opt/cadvise/bin/cadvise" to invoke the tool. A brief description is available
with the -help option.
$ /opt/cadvise/bin/cadvise -help
Additional information is available at: http://www.hp.com/go/cadvise
+cond_rodata Option (Obsoleted)
The compiler now allocates more data in read-only memory. This option is now obsolete.
The compiler always behaves as if it had been specified. (Note: a previous posting of
these notes contained a typographic error. +cond_rodata was mispelled.)
+[no]dep_name Option (New)
+[no]dep_name enforces strict dependent name lookup rules in templates. The default
is +nodep_name.
+expand_types_in_diag Option (New)
+expand_types_in_diag expands typedefs in diagnostics so that both the original and
final types are present.
+FPmode Option (Enhanced)
+FPmode specifies how the run time environment for floating-point operations should
be initialized at program start up. By default, modes are as specified by the IEEE
floating-point standard: all traps disabled, gradual underflow, and rounding to nearest.
See ld(1) for specific values of mode. To dynamically change these settings at run
time, refer to fenv(5), fesettrapenable(3M), fesetflushtozero(3M), and
fesetround(3M).
+Ointeger_overflow (Default Changed)
The default setting for all optimization settings is now
"moderate".+Ointeger_overflow=moderate
+Onolibcalls= Option (New)
+Onolibcalls= allows you to turn off optimization for listed fun ctions.
+Onolibcalls=function1,function2,...
This allows you to turn off libcall optimizations (inlining or replacement) for calls to
the listed functions. This overrides system header files.
+wendian Option (New)
This option allows the user to identify areas in their source that might have porting
issues when going between little-endian and big-endian.
38 What’s New in This Version