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| author | John Högberg <[email protected]> | 2019-02-26 14:52:38 +0100 |
|---|---|---|
| committer | John Högberg <[email protected]> | 2019-02-27 14:59:40 +0100 |
| commit | c68eda34ef8b0d2df9cd1d133b99b64d32e8c622 (patch) | |
| tree | b9736780ea3190d42398af93da3be003c759c156 /lib/compiler/src | |
| parent | 1dd050c9064534f4b4aeb13b7af1fd3b988c5e8f (diff) | |
| download | otp-c68eda34ef8b0d2df9cd1d133b99b64d32e8c622.tar.gz otp-c68eda34ef8b0d2df9cd1d133b99b64d32e8c622.tar.bz2 otp-c68eda34ef8b0d2df9cd1d133b99b64d32e8c622.zip | |
beam_validator: Tolerate the 'receive' hack in prim_eval
Diffstat (limited to 'lib/compiler/src')
| -rw-r--r-- | lib/compiler/src/beam_validator.erl | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/lib/compiler/src/beam_validator.erl b/lib/compiler/src/beam_validator.erl index 63da5d44ba..6044c1bfab 100644 --- a/lib/compiler/src/beam_validator.erl +++ b/lib/compiler/src/beam_validator.erl @@ -476,6 +476,14 @@ valfun_1({'%', {type_info, Reg, Type}}, Vst) -> %% that Reg has a certain type, so that we can accept cross-function type %% optimizations. update_type(fun meet/2, Type, Reg, Vst); +valfun_1({'%', {remove_fragility, Reg}}, Vst) -> + %% This is a hack to make prim_eval:'receive'/2 work. + %% + %% Normally it's illegal to pass fragile terms as a function argument as we + %% have no way of knowing what the callee will do with it, but we know that + %% prim_eval:'receive'/2 won't leak the term, nor cause a GC since it's + %% disabled while matching messages. + remove_fragility(Reg, Vst); valfun_1({'%',_}, Vst) -> Vst; valfun_1({line,_}, Vst) -> |