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-rw-r--r--compat/obstack.h2
1 files changed, 1 insertions, 1 deletions
diff --git a/compat/obstack.h b/compat/obstack.h
index ced94d0118..ae36ed6a66 100644
--- a/compat/obstack.h
+++ b/compat/obstack.h
@@ -496,7 +496,7 @@ __extension__ \
( (h)->temp.tempint = (char *) (obj) - (char *) (h)->chunk, \
((((h)->temp.tempint > 0 \
&& (h)->temp.tempint < (h)->chunk_limit - (char *) (h)->chunk)) \
- ? (int) ((h)->next_free = (h)->object_base \
+ ? (ptrdiff_t) ((h)->next_free = (h)->object_base \
= (h)->temp.tempint + (char *) (h)->chunk) \
: (((obstack_free) ((h), (h)->temp.tempint + (char *) (h)->chunk), 0), 0)))