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<h3>
Marge Bot pushed to branch wip/marge_bot_batch_merge_job
at <a href="https://gitlab.haskell.org/ghc/ghc">Glasgow Haskell Compiler / GHC</a>
</h3>
<h4>
Commits:
</h4>
<ul>
<li>
<strong><a href="https://gitlab.haskell.org/ghc/ghc/commit/0dc7985663efa1739aafb480759e2e2e7fca2a36">0dc79856</a></strong>
<div>
<span>by Julian Leviston</span>
<i>at 2019-05-22T00:55:44Z</i>
</div>
<pre class="commit-message" style="white-space: pre-wrap; margin: 0;">Allow for multiple linker instances. Fixes Haskell portion of #3372.
</pre>
</li>
<li>
<strong><a href="https://gitlab.haskell.org/ghc/ghc/commit/ddc150e51547cb35193c7aad990427b69019b232">ddc150e5</a></strong>
<div>
<span>by Michael Sloan</span>
<i>at 2019-05-22T14:53:54Z</i>
</div>
<pre class="commit-message" style="white-space: pre-wrap; margin: 0;">Have GHCi use object code for UnboxedTuples modules #15454
The idea is to automatically enable -fobject-code for modules that use
UnboxedTuples, along with all the modules they depend on. When looking
into how to solve this, I was pleased to find that there was already
highly similar logic for enabling code generation when -fno-code is
specified but TemplateHaskell is used.
The state before this patch was that if you used unboxed tuples then you
had to enable `-fobject-code` globally rather than on a per module
basis.
</pre>
</li>
<li>
<strong><a href="https://gitlab.haskell.org/ghc/ghc/commit/80b593431a312908b97076e8fe5661c6c8a2aa41">80b59343</a></strong>
<div>
<span>by Michael Sloan</span>
<i>at 2019-05-22T14:53:55Z</i>
</div>
<pre class="commit-message" style="white-space: pre-wrap; margin: 0;">Use datatype for unboxed returns when loading ghc into ghci
See #13101 and #15454
</pre>
</li>
<li>
<strong><a href="https://gitlab.haskell.org/ghc/ghc/commit/721e2b70b2188933e28f8c771fec73fcd10fde9a">721e2b70</a></strong>
<div>
<span>by Kevin Buhr</span>
<i>at 2019-05-22T14:53:56Z</i>
</div>
<pre class="commit-message" style="white-space: pre-wrap; margin: 0;">Add regression test for old Word32 arithmetic issue (#497)
</pre>
</li>
<li>
<strong><a href="https://gitlab.haskell.org/ghc/ghc/commit/4cab7b2e56acf5229631132973a4f44dd4318d21">4cab7b2e</a></strong>
<div>
<span>by Alec Theriault</span>
<i>at 2019-05-22T14:53:58Z</i>
</div>
<pre class="commit-message" style="white-space: pre-wrap; margin: 0;">RTS: Fix restrictive cast
Commit e75a9afd2989e0460f9b49fa07c1667299d93ee9 added an `unsigned` cast
to account for OSes that have signed `rlim_t` signed. Unfortunately,
the `unsigned` cast has the unintended effect of narrowing `rlim_t` to
only 4 bytes. This leads to some spurious out of memory crashes
(in particular: Haddock crashes with OOM whenn building docs of
`ghc`-the-library).
In this case, `W_` is a better type to cast to: we know it will be
unsigned too and it has the same type as `*len` (so we don't suffer from
accidental narrowing).
</pre>
</li>
<li>
<strong><a href="https://gitlab.haskell.org/ghc/ghc/commit/f12088045d3a16a83dd544df2f1d000de912eab7">f1208804</a></strong>
<div>
<span>by Alp Mestanogullari</span>
<i>at 2019-05-22T14:54:00Z</i>
</div>
<pre class="commit-message" style="white-space: pre-wrap; margin: 0;">Hadrian: add --test-root-dirs, to only run specific directories of tests
We can specify several of those, by using the flag multiple times or
just once but combining the directories with ':'.
Along the way, this patch also fixes the testsuite-related --only flag,
so that we can use it many times instead of being force to specify a
space-separated list of test in a single --only flag.
</pre>
</li>
<li>
<strong><a href="https://gitlab.haskell.org/ghc/ghc/commit/ec8f0a02f5fb0079c876f679ddbc858edf6387bb">ec8f0a02</a></strong>
<div>
<span>by Ryan Scott</span>
<i>at 2019-05-22T14:54:02Z</i>
</div>
<pre class="commit-message" style="white-space: pre-wrap; margin: 0;">Use HsTyPats in associated type family defaults
Associated type family default declarations behave strangely in a
couple of ways:
1. If one tries to bind the type variables with an explicit `forall`,
the `forall`'d part will simply be ignored. (#16110)
2. One cannot use visible kind application syntax on the left-hand
sides of associated default equations, unlike every other form
of type family equation. (#16356)
Both of these issues have a common solution. Instead of using
`LHsQTyVars` to represent the left-hand side arguments of an
associated default equation, we instead use `HsTyPats`, which is what
other forms of type family equations use. In particular, here are
some highlights of this patch:
* `FamEqn` is no longer parameterized by a `pats` type variable, as
the `feqn_pats` field is now always `HsTyPats`.
* The new design for `FamEqn` in chronicled in
`Note [Type family instance declarations in HsSyn]`.
* `TyFamDefltEqn` now becomes the same thing as `TyFamInstEqn`. This
means that many of `TyFamDefltEqn`'s code paths can now reuse the
code paths for `TyFamInstEqn`, resulting in substantial
simplifications to various parts of the code dealing with
associated type family defaults.
Fixes #16110 and #16356.
</pre>
</li>
<li>
<strong><a href="https://gitlab.haskell.org/ghc/ghc/commit/45d286b6dce0267cbeea6adf7e55f3443ba621ac">45d286b6</a></strong>
<div>
<span>by Luite Stegeman</span>
<i>at 2019-05-22T14:54:03Z</i>
</div>
<pre class="commit-message" style="white-space: pre-wrap; margin: 0;">fix Template Haskell cross compilation on 64 bit compiler with 32 bit target
</pre>
</li>
<li>
<strong><a href="https://gitlab.haskell.org/ghc/ghc/commit/2e0b92cd6233b3c22a395762d65a9a352a4da378">2e0b92cd</a></strong>
<div>
<span>by Moritz Angermann</span>
<i>at 2019-05-22T14:54:03Z</i>
</div>
<pre class="commit-message" style="white-space: pre-wrap; margin: 0;">Lowercase windows imports
While windows and macOS are currently on case-insensitive file
systems, this poses no issue on those. When cross compiling from
linux with a case sensitive file system and mingw providing only
lowercase headers, this in fact produces an issue. As such we just
lowercase the import headers, which should still work fine on a
case insensitive file system and also enable mingw's headers to
be usable porperly.
</pre>
</li>
<li>
<strong><a href="https://gitlab.haskell.org/ghc/ghc/commit/f00608bee2c32e3702b8bafc329c9019ce18b0cf">f00608be</a></strong>
<div>
<span>by Moritz Angermann</span>
<i>at 2019-05-22T14:54:04Z</i>
</div>
<pre class="commit-message" style="white-space: pre-wrap; margin: 0;">Add `keepCAFs` to RtsSymbols
</pre>
</li>
<li>
<strong><a href="https://gitlab.haskell.org/ghc/ghc/commit/89935a2b602040208f1345b4b565df862c7f4a59">89935a2b</a></strong>
<div>
<span>by Joshua Price</span>
<i>at 2019-05-22T14:54:05Z</i>
</div>
<pre class="commit-message" style="white-space: pre-wrap; margin: 0;">Correct the large tuples section in user's guide
Fixes #16644.
</pre>
</li>
<li>
<strong><a href="https://gitlab.haskell.org/ghc/ghc/commit/d4738d00d9de0c216a67dd7f3103a76e7ce1da66">d4738d00</a></strong>
<div>
<span>by Krzysztof Gogolewski</span>
<i>at 2019-05-22T14:54:05Z</i>
</div>
<pre class="commit-message" style="white-space: pre-wrap; margin: 0;">Fix tcfail158 (#15899)
As described in #15899, this test was broken, but now it's back
to normal.
</pre>
</li>
<li>
<strong><a href="https://gitlab.haskell.org/ghc/ghc/commit/7adadc8bd3ff412794adb5ac4a713d55977297ed">7adadc8b</a></strong>
<div>
<span>by Sebastian Graf</span>
<i>at 2019-05-22T14:54:06Z</i>
</div>
<pre class="commit-message" style="white-space: pre-wrap; margin: 0;">Add a pprTraceWith function
</pre>
</li>
</ul>
<h4>30 changed files:</h4>
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<a href="#2da47fed955dc80b79c67ba640b94aeecf9d5524">
compiler/basicTypes/UniqSupply.hs
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<li class="file-stats">
<a href="#cb94ea134d6d52fab318831e397d2a5c789f2ef3">
compiler/deSugar/DsMeta.hs
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<a href="#0f33fd88c617246c7f89c4477d2d1d24f942df23">
compiler/ghc.cabal.in
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<li class="file-stats">
<a href="#7cf100051b3d8b0e1a0d4f723a9675e6c1540405">
compiler/ghci/Debugger.hs
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<a href="#47f4bea1d308dee249030e6063d92071b5aac240">
compiler/ghci/Linker.hs
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<a href="#56a2aef3e536ed0c92ee3fe12720d26f6c84d541">
<span class="new-file">
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compiler/ghci/LinkerTypes.hs
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<a href="#7f924eb82ea52b493e50fc467c301adb6a0eaf32">
compiler/hieFile/HieAst.hs
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<a href="#8edc819d4b7e02c1439ca8bb128a773a9d2ab2cd">
compiler/hsSyn/Convert.hs
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<a href="#0db90e3d6e6150a586bbd58f75f250c3c71766f9">
compiler/hsSyn/HsDecls.hs
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<a href="#3ec3774412294d7ceaaa0572f116dc7c911d3f6d">
compiler/hsSyn/HsExtension.hs
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<a href="#e7673c6d90538d1c5ad8b53d152421a616776073">
compiler/hsSyn/HsInstances.hs
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<a href="#b5c3aab16d766666149eb971c126ff3cfc4eccf6">
compiler/main/GhcMake.hs
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<a href="#a5d2f1f03da18c26aa3c615ca829648a4a806a5b">
compiler/main/HscMain.hs
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<a href="#a7d05a7194ce9665362b8cb2a6e3cb5bd39f2965">
compiler/main/HscTypes.hs
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<a href="#6bafdfb7a5cd7d70cb64f09f197c29291aa0f6b9">
compiler/main/InteractiveEval.hs
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<a href="#34189e68ae2846ea6a5011a0869bbf30db1f73e5">
compiler/nativeGen/AsmCodeGen.hs
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<a href="#23aebcdf16673b735e637debea3f144bd0c88d9b">
compiler/nativeGen/RegAlloc/Linear/State.hs
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<a href="#f68eb03961d8e370e8d3f41bd51ea01fd168779e">
compiler/parser/RdrHsSyn.hs
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<a href="#a55612b2faf1041b010514ceb222ddf75c15a326">
compiler/rename/RnSource.hs
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<a href="#4f8d5e20ad75b577322cf46f2e146466d905fe43">
compiler/typecheck/TcSplice.hs
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<a href="#bdfa0cc139f61d1236abc1598c5d684b43c357f9">
compiler/typecheck/TcTyClsDecls.hs
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<a href="#7cb0c3b8a55988740abfeec25509f3897dd73950">
compiler/utils/Outputable.hs
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<a href="#d6904e295957d55c64f4949aa3b54695dd57dd76">
docs/users_guide/8.10.1-notes.rst
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<a href="#04359c28c9e4de11d44a0c6ab10e9245d68ee640">
docs/users_guide/bugs.rst
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docs/users_guide/ghci.rst
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<a href="#40d93f06cdb95d1c98a6b3832d0153e59839d832">
docs/users_guide/glasgow_exts.rst
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<a href="#3756eedce60c7b2c32088b0f5f03fa4c31b626e8">
driver/utils/dynwrapper.c
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<a href="#c30f4ac98f08779ad1bd5a02a27802862c1e9521">
ghc/GHCi/UI.hs
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<a href="#6f5243c87d7b56751dbcefbdef20e86ba0a4c643">
hadrian/doc/testsuite.md
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<a href="#5c7e93589da23c93a226ca545d584a21e5c8b87a">
hadrian/src/CommandLine.hs
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<h5>The diff was not included because it is too large.</h5>
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