From 2e9d1f4d44036e7c0605cfeac091368e013e3ed9 Mon Sep 17 00:00:00 2001 From: Philipp Stephani Date: Sun, 2 Aug 2020 16:05:44 +0200 Subject: [PATCH] * src/alloc.c (mark_maybe_object): Avoid signed integer overflow --- src/alloc.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/src/alloc.c b/src/alloc.c index da11426075b..5220ef84783 100644 --- a/src/alloc.c +++ b/src/alloc.c @@ -4652,7 +4652,8 @@ mark_maybe_object (Lisp_Object obj) #else (void) overflow; #endif - void *po = (char *) ((intptr_t) (char *) XLP (obj) + offset); + INT_ADD_WRAPV (offset, (intptr_t) (char *) XLP (obj), &offset); + void *po = (char *) offset; /* If the pointer is in the dump image and the dump has a record of the object starting at the place where the pointer points, we -- 2.39.2