From 59ec3041469226ef65894e5774ecac0fea1551cd Mon Sep 17 00:00:00 2001
From: Sverker Eriksson <sverker@erlang.org>
Date: Wed, 25 Mar 2015 11:30:28 +0100
Subject: erts: Fix bug in list_to_integer for very large strings

list_to_integer(lists:duplicate(10000000,$0)).

crashed due to overflow when calculating nr heap words.
---
 erts/emulator/test/num_bif_SUITE.erl | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

(limited to 'erts/emulator/test')

diff --git a/erts/emulator/test/num_bif_SUITE.erl b/erts/emulator/test/num_bif_SUITE.erl
index 8cf8377c30..abe5b8eb91 100644
--- a/erts/emulator/test/num_bif_SUITE.erl
+++ b/erts/emulator/test/num_bif_SUITE.erl
@@ -441,7 +441,11 @@ t_string_to_integer(Config) when is_list(Config) ->
 		       {"1111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111z",16},
 		       {"1z111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111",16},
 		       {"111z11111111",16}]),
-    
+
+    %% log2 calculation overflow bug in do_integer_to_list (OTP-12624)
+    %% Would crash with segv
+    0 = list_to_integer(lists:duplicate(10000000,$0)),
+
     ok.
 
 test_sti(Num) ->
-- 
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