Set exceeding bitshifts lint to deny

hirschenberger · hirschenberger · commit 7dab9037257f · 2014-11-11T10:41:53.000+01:00
Discussed in rust-lang#18587
diff --git a/src/librustc/lint/builtin.rs b/src/librustc/lint/builtin.rs
@@ -116,7 +116,7 @@ declare_lint!(UNUSED_COMPARISONS, Warn,
 declare_lint!(OVERFLOWING_LITERALS, Warn,
               "literal out of range for its type")
 
-declare_lint!(EXCEEDING_BITSHIFTS, Allow,
+declare_lint!(EXCEEDING_BITSHIFTS, Deny,
               "shift exceeds the type's number of bits")
 
 pub struct TypeLimits {
