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-rw-r--r--malloc/obstack.h5
1 files changed, 3 insertions, 2 deletions
diff --git a/malloc/obstack.h b/malloc/obstack.h
index edbcd264df..beb548ecd2 100644
--- a/malloc/obstack.h
+++ b/malloc/obstack.h
@@ -254,8 +254,9 @@ int obstack_memory_used (struct obstack *obstack);
    so we do not declare them.  */
 
 /* Error handler called when `obstack_chunk_alloc' failed to allocate
-   more memory.  This can be set to a user defined function.  The
-   default action is to print a message and abort.  */
+   more memory.  This can be set to a user defined function which
+   should either abort gracefully or use longjump - but shouldn't
+   return.  The default action is to print a message and abort.  */
 #if defined __STDC__ && __STDC__
 extern void (*obstack_alloc_failed_handler) (void);
 #else