From 14680fcc3fb9d0357fe33a94525d08896afed1c5 Mon Sep 17 00:00:00 2001
From: Richard Carlsson <richardc@klarna.com>
Date: Thu, 3 Dec 2015 14:33:53 +0100
Subject: erts: Use Sint instead of int for list lengths

This avoids potential integer arithmetic overflow for very large lists.
---
 erts/emulator/beam/beam_bif_load.c | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

(limited to 'erts/emulator/beam/beam_bif_load.c')

diff --git a/erts/emulator/beam/beam_bif_load.c b/erts/emulator/beam/beam_bif_load.c
index a000935388..1b4c022370 100644
--- a/erts/emulator/beam/beam_bif_load.c
+++ b/erts/emulator/beam/beam_bif_load.c
@@ -179,8 +179,8 @@ exception_list(Process* p, Eterm tag, struct m* mp, Sint exceptions)
 BIF_RETTYPE
 finish_loading_1(BIF_ALIST_1)
 {
-    int i;
-    int n;
+    Sint i;
+    Sint n;
     struct m* p = NULL;
     Uint exceptions;
     Eterm res;
@@ -201,7 +201,7 @@ finish_loading_1(BIF_ALIST_1)
      */
 
     n = erts_list_length(BIF_ARG_1);
-    if (n == -1) {
+    if (n < 0) {
 	ERTS_BIF_PREP_ERROR(res, BIF_P, BADARG);
 	goto done;
     }
-- 
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