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authorFilipe David Manana <[email protected]>2011-09-01 02:05:05 +0100
committerFilipe David Manana <[email protected]>2011-09-02 00:35:48 -0700
commit03d8c2877342d5ed57596330a61ec0374092f136 (patch)
treedc4f32655af4b0ab0fdd7faa30a1092b87bc65b7 /erts/emulator/test/nif_SUITE.erl
parenteb4aa9b65c8b50597ed8fae092555145e466e1dc (diff)
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Fix enif_compare on 64bits machines
In 64bits machines the Sint type has a size of 8 bytes, while on 32bits machines it has a 4 bytes size. enif_compare was ignoring this and therefore returning incorrect values when the result of the CMP function (which returns a Sint value) doesn't fit in 4 bytes. For example, passing the operands -1294536544000 and -1178704800000 to enif_compare would trigger the bug.
Diffstat (limited to 'erts/emulator/test/nif_SUITE.erl')
-rw-r--r--erts/emulator/test/nif_SUITE.erl6
1 files changed, 6 insertions, 0 deletions
diff --git a/erts/emulator/test/nif_SUITE.erl b/erts/emulator/test/nif_SUITE.erl
index 2867e8e2e4..f6344791f1 100644
--- a/erts/emulator/test/nif_SUITE.erl
+++ b/erts/emulator/test/nif_SUITE.erl
@@ -281,6 +281,12 @@ types(Config) when is_list(Config) ->
end, int_list()),
?line verify_tmpmem(TmpMem),
+ ?line true = (compare(-1294536544000, -1178704800000) < 0),
+ ?line true = (compare(-1178704800000, -1294536544000) > 0),
+ ?line true = (compare(-295147905179352825856, -36893488147419103232) < 0),
+ ?line true = (compare(-36893488147419103232, -295147905179352825856) > 0),
+ ?line true = (compare(-29514790517935282585612345678, -36893488147419103232) < 0),
+ ?line true = (compare(-36893488147419103232, -29514790517935282585612345678) > 0),
ok.
int_list() ->