Fix bug resizing attribute vec

serde-deprecated · Aug 18, 2015 · 53c2ed4 · 53c2ed4
1 parent c8efb64
commit 53c2ed4
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diff --git a/syntex_syntax/Cargo.toml b/syntex_syntax/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "syntex_syntax"
-version = "0.11.0"
+version = "0.11.1"
 authors = [ "[email protected]" ]
 license = "MIT/Apache-2.0"
 description = "Export of libsyntax for code generation"

diff --git a/syntex_syntax/src/attr.rs b/syntex_syntax/src/attr.rs
@@ -39,8 +39,8 @@ pub fn mark_used(attr: &Attribute) {
         let idx = (id / 64) as usize;
         let shift = id % 64;
         if slot.borrow().len() <= idx {
-            slot.borrow_mut().extend(
-                (slot.borrow().len() .. idx).map(|_| 0));
+            let len = slot.borrow().len();
+            slot.borrow_mut().extend((0 .. (idx + 1 - len)).map(|_| 0));
         }
         slot.borrow_mut()[idx] |= 1 << shift;
     });