commit 75a1a9415b9c207de5a29b25c0d1949c6c9c5c61
author Bram Moolenaar <Bram@vim.org> Thu Jun 20 03:45:36 2019 +0200
committer Bram Moolenaar <Bram@vim.org> Thu Jun 20 03:45:36 2019 +0200
tree 470a0887aed4e52e342edbca555e0bec1b85af99
parent a3fce62c911c204ae144b55018f6dc9295088850

patch 8.1.1575: callbacks may be garbage collected

Problem:    Callbacks may be garbage collected.
Solution:   Set reference in callbacks. (Ozaki Kiichi, closes #4564)

src/userfunc.c

diff --git a/src/userfunc.c b/src/userfunc.c
index 197e2e0..8d1df0c 100644
--- a/src/userfunc.c
+++ b/src/userfunc.c
@@ -4032,12 +4032,12 @@
     funccall_T		*fc;
     funccal_entry_T	*entry;
 
-    for (fc = current_funccal; fc != NULL; fc = fc->caller)
+    for (fc = current_funccal; !abort && fc != NULL; fc = fc->caller)
 	abort = abort || set_ref_in_funccal(fc, copyID);
 
     // Also go through the funccal_stack.
-    for (entry = funccal_stack; entry != NULL; entry = entry->next)
-	for (fc = entry->top_funccal; fc != NULL; fc = fc->caller)
+    for (entry = funccal_stack; !abort && entry != NULL; entry = entry->next)
+	for (fc = entry->top_funccal; !abort && fc != NULL; fc = fc->caller)
 	    abort = abort || set_ref_in_funccal(fc, copyID);
 
     return abort;