Struct std::ffi::VaListImpl[][src]

#[repr(C)]
pub struct VaListImpl<'f> { gp_offset: i32, fp_offset: i32, overflow_arg_area: *mut c_void, reg_save_area: *mut c_void, _marker: PhantomData<&'f mut &'f c_void>, }
🔬 This is a nightly-only experimental API. (c_variadic #44930)

the c_variadic feature has not been properly tested on all supported platforms

This is supported on x86-64 and non-Windows only.
Expand description

x86_64 ABI implementation of a va_list.

Fields

gp_offset: i32
🔬 This is a nightly-only experimental API. (c_variadic #44930)

the c_variadic feature has not been properly tested on all supported platforms

fp_offset: i32
🔬 This is a nightly-only experimental API. (c_variadic #44930)

the c_variadic feature has not been properly tested on all supported platforms

overflow_arg_area: *mut c_void
🔬 This is a nightly-only experimental API. (c_variadic #44930)

the c_variadic feature has not been properly tested on all supported platforms

reg_save_area: *mut c_void
🔬 This is a nightly-only experimental API. (c_variadic #44930)

the c_variadic feature has not been properly tested on all supported platforms

_marker: PhantomData<&'f mut &'f c_void>
🔬 This is a nightly-only experimental API. (c_variadic #44930)

the c_variadic feature has not been properly tested on all supported platforms

Implementations

🔬 This is a nightly-only experimental API. (c_variadic #44930)

the c_variadic feature has not been properly tested on all supported platforms

This is supported on (AArch64 or PowerPC or x86-64) and (non-AArch64 or neither macOS nor iOS) and non-WebAssembly and non-JavaScript only.

Convert a VaListImpl into a VaList that is binary-compatible with C’s va_list.

🔬 This is a nightly-only experimental API. (c_variadic #44930)

the c_variadic feature has not been properly tested on all supported platforms

Advance to the next arg.

🔬 This is a nightly-only experimental API. (c_variadic #44930)

the c_variadic feature has not been properly tested on all supported platforms

Copies the va_list at the current location.

Trait Implementations

Returns a copy of the value. Read more

Performs copy-assignment from source. Read more

Formats the value using the given formatter. Read more

Executes the destructor for this type. Read more

Auto Trait Implementations

Blanket Implementations

Gets the TypeId of self. Read more

Immutably borrows from an owned value. Read more

Mutably borrows from an owned value. Read more

Performs the conversion.

Performs the conversion.

The resulting type after obtaining ownership.

Creates owned data from borrowed data, usually by cloning. Read more

🔬 This is a nightly-only experimental API. (toowned_clone_into #41263)

recently added

Uses borrowed data to replace owned data, usually by cloning. Read more

The type returned in the event of a conversion error.

Performs the conversion.

The type returned in the event of a conversion error.

Performs the conversion.