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Output type sizes in reinterpret_cast error message

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Closes #2095
This commit is contained in:
Marijn Haverbeke 2012-04-03 16:37:54 +02:00
parent 90d3f0fb5e
commit f65e26eeee
1 changed files with 8 additions and 6 deletions
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14
src/rustc/middle/trans/native.rs
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@ -780,15 +780,17 @@ fn trans_intrinsic(ccx: @crate_ctxt, decl: ValueRef, item: @ast::native_item,
"forget" {}
"reinterpret_cast" {
let llout_ty = type_of::type_of(ccx, substs.tys[1]);
if shape::llsize_of_real(ccx, lltp_ty) !=
shape::llsize_of_real(ccx, llout_ty) {
let tp_sz = shape::llsize_of_real(ccx, lltp_ty),
out_sz = shape::llsize_of_real(ccx, llout_ty);
if tp_sz != out_sz {
let sp = alt check ccx.tcx.items.get(option::get(ref_id)) {
ast_map::node_expr(e) { e.span }
};
ccx.sess.span_fatal(sp, "reinterpret_cast called on types \
with different size: " +
ty_to_str(ccx.tcx, tp_ty) + " to " +
ty_to_str(ccx.tcx, substs.tys[1]));
ccx.sess.span_fatal(
sp, #fmt("reinterpret_cast called on types \
with different size: %s (%u) to %s (%u)",
ty_to_str(ccx.tcx, tp_ty), tp_sz,
ty_to_str(ccx.tcx, substs.tys[1]), out_sz));
}
if !ty::type_is_nil(substs.tys[1]) {
let cast = PointerCast(bcx, get_param(decl, first_real_arg),