[Emacs-diffs] emacs-26 41adf32: Avoid duplicate calls to xfree for the same pointer

[Eli Zaretskii]

branch: emacs-26
commit 41adf3281ef6386c539f1fb9d36c4fb3f643b77c
Author: Eli Zaretskii <address@hidden>
Commit: Eli Zaretskii <address@hidden>

    Avoid duplicate calls to xfree for the same pointer
    
    * src/alloc.c (sweep_symbols): Avoid freeing an already freed
    pointer to a symbol's buffer-local value.  (Bug#29066)
---
 src/alloc.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/src/alloc.c b/src/alloc.c
index d9d7485..11afdfd 100644
--- a/src/alloc.c
+++ b/src/alloc.c
@@ -7024,7 +7024,9 @@ sweep_symbols (void)
         {
           if (!sym->s.gcmarkbit)
             {
-              if (sym->s.redirect == SYMBOL_LOCALIZED)
+              if (sym->s.redirect == SYMBOL_LOCALIZED
+                 /* Already freed?  */
+                 && !EQ (sym->s.function, Vdead))
                 xfree (SYMBOL_BLV (&sym->s));
               sym->s.next = symbol_free_list;
               symbol_free_list = &sym->s;