Don't show const in docs when it's not available

Fixes #31098
2016-01-31 15:48:08 -05:00 · 2016-01-31 15:48:08 -05:00 · cea8f67199
commit cea8f67199
parent 9041b93058
1 changed files with 3 additions and 0 deletions
--- a/src/librustdoc/html/format.rs
+++ b/src/librustdoc/html/format.rs
@ -657,6 +657,9 @@ impl fmt::Display for UnsafetySpace {

 impl fmt::Display for ConstnessSpace {
    fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
+        if option_env!("CFG_DISABLE_UNSTABLE_FEATURES").is_some() {
+            return Ok(());
+        }
        match self.get() {
            hir::Constness::Const => write!(f, "const "),
            hir::Constness::NotConst => Ok(())