diff options
Diffstat (limited to 'gcc/tree-switch-conversion.c')
| -rw-r--r-- | gcc/tree-switch-conversion.c | 8 |
1 files changed, 7 insertions, 1 deletions
diff --git a/gcc/tree-switch-conversion.c b/gcc/tree-switch-conversion.c index 0ce5fc9..36c87f9 100644 --- a/gcc/tree-switch-conversion.c +++ b/gcc/tree-switch-conversion.c @@ -622,7 +622,7 @@ gen_inbound_check (tree swtch) tree label_decl3 = create_artificial_label (); tree label1, label2, label3; - tree utype = unsigned_type_for (TREE_TYPE (info.index_expr)); + tree utype; tree tmp_u; tree cast, cast_assign; tree ulb, minus, minus_assign; @@ -638,6 +638,12 @@ gen_inbound_check (tree swtch) gcc_assert (info.default_values); bb0 = bb_for_stmt (swtch); + /* Make sure we do not generate arithmetics in a subrange. */ + if (TREE_TYPE (TREE_TYPE (info.index_expr))) + utype = unsigned_type_for (TREE_TYPE (TREE_TYPE (info.index_expr))); + else + utype = unsigned_type_for (TREE_TYPE (info.index_expr)); + /* (end of) block 0 */ bsi = bsi_for_stmt (info.arr_ref_first); tmp_u = make_rename_temp (utype, "csui"); |