Enum flowistry_pdg::rustc::mir::interpret::UnsupportedOpInfo

pub enum UnsupportedOpInfo {
    Unsupported(String),
    OverwritePartialPointer(Pointer<AllocId>),
    ReadPartialPointer(Pointer<AllocId>),
    ReadPointerAsInt(Option<(AllocId, BadBytesAccess)>),
    ThreadLocalStatic(DefId),
    ReadExternStatic(DefId),
}

Error information for when the program did something that might (or might not) be correct to do according to the Rust spec, but due to limitations in the interpreter, the operation could not be carried out. These limitations can differ between CTFE and the Miri engine, e.g., CTFE does not support dereferencing pointers at integral addresses.

Variants

Unsupported(String)

Free-form case. Only for errors that are never caught!

OverwritePartialPointer(Pointer<AllocId>)

Overwriting parts of a pointer; without knowing absolute addresses, the resulting state cannot be represented by the CTFE interpreter.

ReadPartialPointer(Pointer<AllocId>)

Attempting to read or copy parts of a pointer to somewhere else; without knowing absolute addresses, the resulting state cannot be represented by the CTFE interpreter.

ReadPointerAsInt(Option<(AllocId, BadBytesAccess)>)

Encountered a pointer where we needed an integer.

ThreadLocalStatic(DefId)

Accessing thread local statics

ReadExternStatic(DefId)

Accessing an unsupported extern static.