Module rustc_mir::transform::check_consts::ops[−][src]

Concrete error types for all operations which may be invalid in a certain const context.

Modules

CellBorrow	A borrow of a type that contains an `UnsafeCell` somewhere. The borrow might escape to the final value of the constant, and thus we cannot allow this (for now). We may allow it in the future for static items.
FloatingPointOp
FnCallIndirect	A function call where the callee is a pointer.
FnCallNonConst	A function call where the callee is not marked as `const`.
FnCallUnstable	A call to a `#[unstable]` const fn or `#[rustc_const_unstable]` function.
FnPtrCast
Generator
HeapAllocation
InlineAsm
LiveDrop
MutBorrow	This op is for `&mut` borrows in the trailing expression of a constant which uses the “enclosing scopes rule” to leak its locals into anonymous static or const items.
MutDeref
Panic
PanicNonStr	A call to a `panic()` lang item where the first argument is not a `&str`.
RawPtrComparison
RawPtrDeref
RawPtrToIntCast
StaticAccess	An access to a (non-thread-local) `static`.
ThreadLocalAccess	An access to a thread-local `static`.
TransientCellBorrow	A borrow of a type that contains an `UnsafeCell` somewhere. The borrow never escapes to the final value of the constant.
TransientMutBorrow
Transmute
UnionAccess
UnsizingCast	See #64992.

DiagnosticImportance
Status

An operation that is not always allowed in a const context.

mcf_build_error
mcf_status_in_item