HP aC++/HP ANSI C A.06.28 Release (769149-001, March 2014)

◦ Variadic macros

◦ _Pragma operator

• 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 run-time abort messages (New)

C99 default C compilation mode (Changed)

In this version of the HP C/aC++ compiler, the default C compilation mode has changed from C89

to C99. So by default C99 features are enabled, and the following commands are now equivalent:

cc -Ae

cc -AC99

aCC -Ae

aCC -AC99

To retain the previous behavior, use the -AC89 command-line option.

Errors that can happen with C89 conforming code when using the -AC99 command-line option

include:

• enum out of range:

error #2066: enumeration value is out of "int" range

error #4041: enumeration value is out of "char" range

• Restriction on constant expressions:

error #2057: this operator is not allowed in a constant expression

error #2028: expression must have a constant value

(Instead of warning #4045-D: non-constant initialization performed at runtime.)

• Non-static inline can't reference static:

error #3031-D: an entity with internal linkage cannot be referenced

within an inline function with external linkage

• Use of inline or restrict as variables/functions/types:

error #2040: expected an identifier

Full -AA default C++ compilation mode (Changed)

In this version of the HP aC++ compiler, the default C++ compilation mode has changed to full

-AA, which now additionally enables the option -Wc,-ansi_for_scope,on. This is being done

to reduce porting efforts by adhering to the C++ Standard.

New features in version A.06.25 25