Status of Experimental C++0x Support in GCC 4.3
GCC provides experimental support for the upcoming ISO C++ standard, C++0x. This support can be enabled with the-std=c++0x
or -std=gnu++0x
compiler options; the former disables GNU extensions.
GCC's C++0x mode tracks the C++0x working paper drafts produced by the ISO C++ committee, available on the ISO C++ committee's web site at https://www.open-std.org/jtc1/sc22/wg21/. Since this standard is still being extended and modified, the feature set provided by the experimental C++0x mode may vary greatly from one GCC version to another. No attempts will be made to preserve backward compatibility with C++0x features whose semantics have changed during the course of C++0x standardization.
The following table lists which C++0x features are supported in this release of GCC. For more information about C++0x support in GCC, please see the C++0x in GCC project page.
Language Feature | Proposal | Available in GCC 4.3? |
---|---|---|
Rvalue references | N2118 | Yes |
Rvalue references for *this | N2439 | No |
Variadic templates | N2242 | Yes |
Extending variadic template template parameters | N2555 | No |
Initializer lists | N2672 | No |
Static assertions | N1720 | Yes |
auto-typed variables | N1984 | No |
Multi-declarator auto | N1737 | No |
Removal of auto as a storage-class specifier | N2546 | No |
New function declarator syntax | N2541 | No |
Lambda expressions and closures | N2550 | No |
Constness of lambda functions | N2658 | No |
Declared type of an expression | N2343 | Yes |
Right angle brackets | N1757 | Yes |
Default template arguments for function templates | DR226 | Yes |
Solving the SFINAE problem for expressions | DR339 | No |
Template aliases | N2258 | No |
Extern templates | N1987 | Yes |
Null pointer constant | N2431 | No |
Strongly-typed enums | N2347 | No |
Generalized constant expressions | N2235 | No |
Alignment support | N2341 | No |
Delegating constructors | N1986 | No |
Inheriting constructors | N2540 | No |
Explicit conversion operators | N2437 | No |
New character types | N2249 | No |
Raw and Unicode string literals | N2442 | No |
Extended PODs | N2342 | No |
Initialization of class objects by rvalues | N1610 | No |
Extended friend declarations | N1791 | No |
Extending sizeof | N2253 | No |
Universal character name literals | N2170 | No |
Defaulted and deleted functions | N2346 | No |
Inline namespaces | N2535 | No |
Unrestricted unions | N2544 | No |
Local and unnamed types as template arguments | N2657 | No |
Minimal support for garbage collection and reachability-based leak detection | N2670 | No |
Concurrency | ||
Sequence points | N2239 | No |
Atomic operations | N2427 | No |
Memory model | N2429 | No |
C++ data-dependency ordering: atomics and memory model | N2664 | No |
Copying and rethrowing exceptions | N2179 | No |
Abandoning a process | N2440 | No |
Allow atomics use in signal handlers | N2547 | No |
Thread-local storage | N2659 | No |
Dynamic initialization and destruction with concurrency | N2660 | No |
C99 Features in C++0x | ||
__func__ predefined identifier | N2340 | Yes |
C99 preprocessor | N1653 | Yes |
long long | N1811 | Yes |
Extended integral types | N1988 | No |