[PATCH 3/5] bitset: fix the copy from lbitset to other types

[Akim Demaille]

bitset_copy from an lbitset did not check whether the destination has
the same type.  Apply the same strategy as elsewhere.

Without this commit, the following one fails.

* lib/bitset/list.c (lbitset_copy): Rename as...
(lbitset_copy_): this.
(lbitset_copy): New.
Dispatch to heterogeneous/homogeneous copy.
---
 ChangeLog         |  6 ++++++
 lib/bitset/list.c | 11 ++++++++++-
 2 files changed, 16 insertions(+), 1 deletion(-)

diff --git a/ChangeLog b/ChangeLog
index 3e3e78ed3..ff21b6631 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,5 +1,11 @@
 2020-11-15  Akim Demaille  <akim@lrde.epita.fr>
 
+       bitset: fix the copy from lbitset to other types
+       * lib/bitset/list.c (lbitset_copy): Rename as...
+       (lbitset_copy_): this.
+       (lbitset_copy): New.
+       Dispatch to heterogeneous/homogeneous copy.
+
        bitset: making debug traces more useful
        * lib/bitset.c (bitset_print): Print the bitset type in verbose node.
 
diff --git a/lib/bitset/list.c b/lib/bitset/list.c
index c1f3d9b15..dc00fdc29 100644
--- a/lib/bitset/list.c
+++ b/lib/bitset/list.c
@@ -428,7 +428,7 @@ lbitset_equal_p (bitset dst, bitset src)
 
 /* Copy bits from bitset SRC to bitset DST.  */
 static inline void
-lbitset_copy (bitset dst, bitset src)
+lbitset_copy_ (bitset dst, bitset src)
 {
   if (src == dst)
     return;
@@ -463,6 +463,15 @@ lbitset_copy (bitset dst, bitset src)
 }
 
 
+static void
+lbitset_copy (bitset dst, bitset src)
+{
+  if (BITSET_COMPATIBLE_ (dst, src))
+    lbitset_copy_ (dst, src);
+  else
+    bitset_copy_ (dst, src);
+}
+
 /* Copy bits from bitset SRC to bitset DST.  Return true if
    bitsets different.  */
 static inline bool
-- 
2.29.2