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authorBjörn Gustavsson <[email protected]>2015-12-04 12:15:40 +0100
committerBjörn Gustavsson <[email protected]>2015-12-11 14:37:46 +0100
commit80757f9491c72ee262a5910e0b3b02e95b1e5f2a (patch)
tree1019a6da73ac28571a0b51727ed6fa33daf11522 /lib/compiler/src/rec_env.erl
parentdee396ffd32dcd68c47cab983c75ba32f921b9db (diff)
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Use 'rand' instead of the obsolete 'random' module
In most cases, we don't have to seed the random number generator, as the rand:uniform/1 takes care about that itself.
Diffstat (limited to 'lib/compiler/src/rec_env.erl')
-rw-r--r--lib/compiler/src/rec_env.erl11
1 files changed, 10 insertions, 1 deletions
diff --git a/lib/compiler/src/rec_env.erl b/lib/compiler/src/rec_env.erl
index 0e9e12d1ad..5a4a870769 100644
--- a/lib/compiler/src/rec_env.erl
+++ b/lib/compiler/src/rec_env.erl
@@ -598,7 +598,16 @@ start_range(Env) ->
%% (pseudo-)randomly distributed over the range.
generate(_N, Range) ->
- random:uniform(Range). % works well
+ %% We must use the same sequence of random variables to ensure
+ %% that two compilations of the same source code generates the
+ %% same BEAM code.
+ case rand:export_seed() of
+ undefined ->
+ rand:seed(exsplus, {1,42,2053});
+ _ ->
+ ok
+ end,
+ rand:uniform(Range). % works well
%% =====================================================================