Closed
Description
RUST_LOG=rustc::middle::trans rustc derive.rs
error: internal compiler error: unexpected failure
note: the compiler hit an unexpected failure path. this is a bug.
note: we would appreciate a bug report: http://static.rust-lang.org/doc/master/complement-bugreport.html
note: run with `RUST_BACKTRACE=1` for a backtrace
task 'rustc' failed at 'assertion failed: body.expr.is_some()', /home/jdm/sdb/servo/src/compiler/rust/src/libsyntax/print/pprust.rs:1315
derive.rs is:
extern crate serialize;
use serialize::{Encodable, Encoder};
#[deriving(Encodable)]
struct Attr;
struct JSTracer;
impl Encoder for JSTracer {
fn emit_nil(&mut self) {}
fn emit_uint(&mut self, _v: uint) {}
fn emit_u64(&mut self, _v: u64) {}
fn emit_u32(&mut self, __v: u32) {}
fn emit_u16(&mut self, _v: u16) {}
fn emit_u8(&mut self, _v: u8) {}
fn emit_int(&mut self, _v: int) {}
fn emit_i64(&mut self, _v: i64) {}
fn emit_i32(&mut self, _v: i32) {}
fn emit_i16(&mut self, _v: i16) {}
fn emit_i8(&mut self, _v: i8) {}
fn emit_bool(&mut self, _v: bool) {}
fn emit_f64(&mut self, _v: f64) {}
fn emit_f32(&mut self, _v: f32) {}
fn emit_char(&mut self, _v: char) {}
fn emit_str(&mut self, _v: &str) {}
fn emit_enum(&mut self, _name: &str, f: |&mut JSTracer|) {
f(self);
}
fn emit_enum_variant(&mut self, _v_name: &str, _v_id: uint, _len: uint, f: |&mut JSTracer|) {
f(self);
}
fn emit_enum_variant_arg(&mut self, _a_idx: uint, f: |&mut JSTracer|) {
f(self);
}
fn emit_enum_struct_variant(&mut self, _v_name: &str, _v_id: uint, _len: uint, f: |&mut JSTracer|) {
f(self);
}
fn emit_enum_struct_variant_field(&mut self, _f_name: &str, _f_idx: uint, f: |&mut JSTracer|) {
f(self);
}
fn emit_struct(&mut self, _name: &str, _len: uint, f: |&mut JSTracer|) {
f(self);
}
fn emit_struct_field(&mut self, _f_name: &str, _f_idx: uint, f: |&mut JSTracer|) {
f(self);
}
fn emit_tuple(&mut self, _len: uint, f: |&mut JSTracer|) {
f(self);
}
fn emit_tuple_arg(&mut self, _idx: uint, f: |&mut JSTracer|) {
f(self);
}
fn emit_tuple_struct(&mut self, _name: &str, _len: uint, f: |&mut JSTracer|) {
f(self);
}
fn emit_tuple_struct_arg(&mut self, _f_idx: uint, f: |&mut JSTracer|) {
f(self);
}
fn emit_option(&mut self, f: |&mut JSTracer|) {
f(self);
}
fn emit_option_none(&mut self) {}
fn emit_option_some(&mut self, f: |&mut JSTracer|) {
f(self);
}
fn emit_seq(&mut self, _len: uint, f: |this: &mut JSTracer|) {
f(self);
}
fn emit_seq_elt(&mut self, _idx: uint, f: |this: &mut JSTracer|) {
f(self);
}
fn emit_map(&mut self, _len: uint, f: |&mut JSTracer|) {
f(self);
}
fn emit_map_elt_key(&mut self, _idx: uint, f: |&mut JSTracer|) {
f(self);
}
fn emit_map_elt_val(&mut self, _idx: uint, f: |&mut JSTracer|) {
f(self);
}
}
fn main() {
let a = Attr;
let _ = a.encode(&mut JSTracer);
}