In codegen, a used function with `FunctionCoverageInfo` but no mappings has historically indicated a bug. However, that will no longer be the case after moving some fallible span-processing steps into codegen.
rustc_span::symbol
rustc_span
llvm::Bool
LLVMBool
TypingEnv
infcx
&str
&[u8]
*const c_char
int_type_width_signed
rustc_abi::Abi
BackendRepr
warn(unreachable_pub)
rustc_codegen_llvm