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| author | Björn Gustavsson <[email protected]> | 2016-04-26 09:11:07 +0200 |
|---|---|---|
| committer | Björn Gustavsson <[email protected]> | 2016-04-28 12:13:49 +0200 |
| commit | a3ec2644f58d8cfeca0240929d44885ff7a517fa (patch) | |
| tree | 2f0c6a7ffc6ac1ed1aa563a7f6a0a193c5a036f1 /lib/compiler/test | |
| parent | 85ccc38d59dd9751dfd7cead0e4ed0c1e6c169ad (diff) | |
| download | otp-a3ec2644f58d8cfeca0240929d44885ff7a517fa.tar.gz otp-a3ec2644f58d8cfeca0240929d44885ff7a517fa.tar.bz2 otp-a3ec2644f58d8cfeca0240929d44885ff7a517fa.zip | |
v3_core: Don't depend on sys_core_fold for cleaning up
v3_core would generate unsafe code for the following example:
f() ->
{ok={error,E}} = foo(),
E.
Internally, the code would look similar to:
f() ->
Var = foo(),
error({badmatch,Var}),
E.
That is, there would remain a reference to an unbound variable.
Normally, sys_core_fold would remove the reference to 'E', but if
if optimization was disabled the compiler would crash.
Diffstat (limited to 'lib/compiler/test')
| -rw-r--r-- | lib/compiler/test/match_SUITE.erl | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/lib/compiler/test/match_SUITE.erl b/lib/compiler/test/match_SUITE.erl index 45d84a7b80..92a9802cad 100644 --- a/lib/compiler/test/match_SUITE.erl +++ b/lib/compiler/test/match_SUITE.erl @@ -150,6 +150,9 @@ aliases(Config) when is_list(Config) -> none = mixed_aliases({a,42}), none = mixed_aliases(42), + %% Non-matching aliases. + {'EXIT',{{badmatch,42},_}} = (catch nomatch_alias(42)), + ok. str_alias(V) -> @@ -259,6 +262,10 @@ mixed_aliases(<<X:8>> = {a,X}) -> {c,X}; mixed_aliases([X] = <<X:8>>) -> {d,X}; mixed_aliases(_) -> none. +nomatch_alias(I) -> + {ok={A,B}} = id(I), + {A,B}. + %% OTP-7018. match_in_call(Config) when is_list(Config) -> |