[Emacs-diffs] master 8ff0915 2/2: ; Add comment to hash_table_rehash (Bug#36447)

[Noam Postavsky]

branch: master
commit 8ff09154a29a1151afb2902267ca35f89ebda73c
Author: Stefan Monnier <address@hidden>
Commit: Noam Postavsky <address@hidden>

    ; Add comment to hash_table_rehash (Bug#36447)
    
    * src/fns.c (hash_table_rehash): Add a comment to explain that
    hash_table_rehash is not used in "normal" rehashing, but only in the
    rare case of rehashing on the first access to a preloaded hash-table.
---
 src/fns.c | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/src/fns.c b/src/fns.c
index 238a371..0497588 100644
--- a/src/fns.c
+++ b/src/fns.c
@@ -4231,6 +4231,11 @@ maybe_resize_hash_table (struct Lisp_Hash_Table *h)
     }
 }
 
+/* Recompute the hashes (and hence also the "next" pointers).
+   Normally there's never a need to recompute hashes.
+   This is done only on first-access to a hash-table loaded from
+   the "pdump", because the object's addresses may have changed, thus
+   affecting their hash.  */
 void
 hash_table_rehash (struct Lisp_Hash_Table *h)
 {