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| author | Ömer Sinan Ağacan <omeragacan@gmail.com> | 2018-05-10 11:13:37 +0300 |
|---|---|---|
| committer | Ömer Sinan Ağacan <omeragacan@gmail.com> | 2018-05-10 11:53:09 +0300 |
| commit | b2ff5dde399cd012218578945ada1d9ff68daa35 (patch) | |
| tree | 730a83ea4b91622894412f7882d5b2f1d5c7c6f2 /libraries/base/Control | |
| parent | 5fe6aaa3756cda654374ebfd883fa8f064ff64a4 (diff) | |
| download | haskell-b2ff5dde399cd012218578945ada1d9ff68daa35.tar.gz | |
Fix #15038
We introduce a new Id for unused pointer values in unboxed sums that is
not CAFFY. Because the Id is not CAFFY it doesn't make non-CAFFY
definitions CAFFY, fixing #15038.
To make sure anything referenced by the new id will be retained we get a
stable pointer to in on RTS startup.
Test Plan: Passes validate
Reviewers: simonmar, simonpj, hvr, bgamari, erikd
Reviewed By: simonmar
Subscribers: rwbarton, thomie, carter
GHC Trac Issues: #15038
Differential Revision: https://phabricator.haskell.org/D4680
Diffstat (limited to 'libraries/base/Control')
| -rw-r--r-- | libraries/base/Control/Exception/Base.hs | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/libraries/base/Control/Exception/Base.hs b/libraries/base/Control/Exception/Base.hs index e675e0c017..4b5d94ece7 100644 --- a/libraries/base/Control/Exception/Base.hs +++ b/libraries/base/Control/Exception/Base.hs @@ -95,7 +95,7 @@ module Control.Exception.Base ( -- * Calls for GHC runtime recSelError, recConError, runtimeError, nonExhaustiveGuardsError, patError, noMethodBindingError, - absentError, typeError, + absentError, absentSumFieldError, typeError, nonTermination, nestedAtomically, ) where @@ -398,3 +398,7 @@ nonTermination = toException NonTermination -- GHC's RTS calls this nestedAtomically :: SomeException nestedAtomically = toException NestedAtomically + +-- Introduced by unarise for unused unboxed sum fields +absentSumFieldError :: a +absentSumFieldError = absentError " in unboxed sum."# |