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git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@173841 91177308-0d34-0410-b5e6-96231b3b80d8
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and split it out of -Wgnu into its own warning flag.
* In C++11, this is now a hard error (GCC has no extension here in C++11 mode).
The error can be disabled with -Wno-static-float-init, and has a fixit to
add 'constexpr'.
* In C++98, this is still an ExtWarn, but is now controlled by
-Wstatic-float-init as well as -Wgnu.
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@173414 91177308-0d34-0410-b5e6-96231b3b80d8
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constructor, and that constructor is used to initialize an object of static
storage duration such that all members and bases are initialized by constant
expressions, constant initialization is performed. In this case, the object
can still have a non-trivial destructor, and if it does, we must emit a dynamic
initializer which performs no initialization and instead simply registers that
destructor.
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@150419 91177308-0d34-0410-b5e6-96231b3b80d8
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1358, 1360, 1452 and 1453.
- Instantiations of constexpr functions are always constexpr. This removes the
need for separate declaration/definition checking, which is now gone.
- This makes it possible for a constexpr function to be virtual, if they are
only dependently virtual. Virtual calls to such functions are not constant
expressions.
- Likewise, it's now possible for a literal type to have virtual base classes.
A constexpr constructor for such a type cannot actually produce a constant
expression, though, so add a special-case diagnostic for a constructor call
to such a type rather than trying to evaluate it.
- Classes with trivial default constructors (for which value initialization can
produce a fully-initialized value) are considered literal types.
- Classes with volatile members are not literal types.
- constexpr constructors can be members of non-literal types. We do not yet use
static initialization for global objects constructed in this way.
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@150359 91177308-0d34-0410-b5e6-96231b3b80d8
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template definitions.
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@148506 91177308-0d34-0410-b5e6-96231b3b80d8
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constexpr.
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@148505 91177308-0d34-0410-b5e6-96231b3b80d8
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initializer; all other constexpr variables are merely required to be
initialized. In particular, a user-provided constexpr default constructor can be
used for such initialization.
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@144028 91177308-0d34-0410-b5e6-96231b3b80d8
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-std=c++0x. Patch by Ahmed Charles!
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@141900 91177308-0d34-0410-b5e6-96231b3b80d8
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initializer if the in-class declaration had one. Such a declaration must be initialized by a constant expression.
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@141279 91177308-0d34-0410-b5e6-96231b3b80d8
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for static const float members is used in C++11 mode.
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@140828 91177308-0d34-0410-b5e6-96231b3b80d8
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as a GNU extension. Don't extend the scope of this extension to all literal types in C++0x mode.
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@140820 91177308-0d34-0410-b5e6-96231b3b80d8
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We had an extension which allowed const static class members of floating-point type to have in-class initializers, 'as a C++0x extension'. However, C++0x does not allow this. The extension has been kept, and extended to all literal types in C++0x mode (with a fixit to add the 'constexpr' specifier).
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@140801 91177308-0d34-0410-b5e6-96231b3b80d8
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