GCC defines different variations of language The Oracle Developer Studio 12.6 C compiler release includes new language standard
#Compatibility with pro tools 12.6 code#
If your code depends on this value, it can be overidden on Macro to the value 0 on the Oracle Solaris platform. The Oracle Developer Studio 12.6 C++ compiler defines the _STDC_ Oracle Developer Studio compilers based on the different CPP symbols that are
Sometimes, the Oracle Solaris system headers react in different ways to GNU and D_EXTENSIONS_, that enables Oracle Solaris extension The following compiler options affect the standards conformance modes: For example, _restrict_ will beĮnabled in all modes, even when restrict is not valid. System headers can use them regardless of whether the current standards mode allow These variant spellings are enabled in all compilation modes so that GCC defines a special category of hidden keywords that have leading and trailing
That uses a keyword with a specific spelling, then you can use a command lineĪrgument to define it as a macro. The spellings that are valid at any time willīe affected by the language mode, such as C 99 vs C 11. Oracle Developer Studio and GCC differ in the way keywords have spellings. In Oracle Developer Studio 12.6, C++ compiler added the ability to use unicode Layout of structs in headers for libraries that might not have been compiled Oracle Developer Studioġ2.6 has the –fshort-enums option similar to When the -fshort-enums flag is in effect. Note that this behavior is quite different from the way enums are implemented –features=gcc_enums to implement the same behavior as In Oracle Developer Studio 12.6, the C compiler supports the option The type of an enumeration value in standard C is defined to be The Oracle Developer Studio C compiler always Unsigned int types to store enums, as long as the type isĬompatible with all the defined enum values. The C language standard enables the compiler to choose either signed or Negative value into that type, it will be treated as a large unsigned The internal type used by the compiler will be an unsigned type. If an enum type has no negative values defined for it, then The gcc compiler performs a kind of optimization related to Gcc –funsigned-bitfields flag to control this behavior.įor more information, see the sixth list item at.
The Oracle Developer Studio compiler uses unsigned types for intīit-fields and the gcc compiler uses signed types. This makes a difference whenĮxtracting a value and deciding whether to sign extend it. Int or unsigned int) can be implemented by theĬompiler using either signed or unsigned types. Signed and Unsigned int Bit-fieldsīit-fields which are declared as int (not signed The behavior of Oracle Developer Studio C and C++ is differentįrom the behavior of gcc. These details are defined in the GCC and Oracle Developer Studio documentation, andīoth bit-fields and enumerated types can be either signed or unsigned by theĬhoice of the compiler. Some parts of the C and C++ standards are left as “implementation definedīehavior”. This section discusses compiler features and other behaviors that affect compatibilityīetween Oracle Developer Studio and GCC.
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