Don't warn about unused for-loop index variables

2011-06-30 10:41:06 -07:00 · 2011-06-30 10:41:06 -07:00 · 6a74253d60
parent d8db9a0fe1
commit 6a74253d60
1 changed files with 4 additions and 0 deletions
--- a/src/comp/middle/tstate/pre_post_conditions.rs
+++ b/src/comp/middle/tstate/pre_post_conditions.rs
@ -176,6 +176,10 @@ fn find_pre_post_loop(&fn_ctxt fcx, &@local l, &@expr index, &block body,
    find_pre_post_block(fcx, body);
    auto v_init = rec(id=l.node.id, c=ninit(l.node.ident));
    relax_precond_block(fcx, bit_num(fcx, v_init) as node_id, body);
+    
+    // Hack: for-loop index variables are frequently ignored,
+    // so we pretend they're used
+    use_var(fcx, l.node.id);

    auto loop_precond =
        seq_preconds(fcx,