feature.h: Mask hints in CURRENT_FEATURE_BUNDLE

Otherwise CURRENT_FEATURE_BUNDLE will end up including any hints added
later that happen to use higher bits.

This was causing autobox to turn off all features, causing failures
for Dist::Zilla::PluginBundle::AVAR.

I’m not adding tests for this, as such tests would need constant
tweaking in future perl developement.  What autobox is doing is
naughty and unsupported anyway.

1 files changed, 2 insertions, 1 deletions

diff --git a/feature.h b/feature.h
index 2d06450628..60bf41d6a5 100644
--- a/feature.h
+++ b/feature.h
@@ -17,7 +17,8 @@
 
 #define CURRENT_HINTS \
     (PL_curcop == &PL_compiling ? PL_hints : PL_curcop->cop_hints)
-#define CURRENT_FEATURE_BUNDLE	(CURRENT_HINTS >> HINT_FEATURE_SHIFT)
+#define CURRENT_FEATURE_BUNDLE \
+    ((CURRENT_HINTS & HINT_FEATURE_MASK) >> HINT_FEATURE_SHIFT)
 
 #define FEATURE_IS_ENABLED(name)				        \
 	((CURRENT_HINTS							 \