8341668: Shenandoah: assert(tail_bits < (idx_t)BitsPerWord) failed: precondition

Reviewed-by: ysr

Author: William Kemper

src/hotspot/share/gc/shenandoah/shenandoahSimpleBitMap.hpp

@@ -80,6 +80,8 @@ class ShenandoahSimpleBitMap {
   bool is_forward_consecutive_ones(idx_t start_idx, idx_t count) const;
   bool is_backward_consecutive_ones(idx_t last_idx, idx_t count) const;
 
+  static inline uintx tail_mask(uintx bit_number);
+
 public:
 
   inline idx_t aligned_index(idx_t idx) const {

src/hotspot/share/gc/shenandoah/shenandoahSimpleBitMap.inline.hpp

@@ -27,7 +27,7 @@
 
 #include "gc/shenandoah/shenandoahSimpleBitMap.hpp"
 
-inline uintx tail_mask(uintx bit_number) {
+inline uintx ShenandoahSimpleBitMap::tail_mask(uintx bit_number) {
   if (bit_number >= BitsPerWord) {
     return -1;
   }