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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/21272670581608b96a85cfb942af81ada3cfd450">21272670</a></strong>
<div>
<span>by Michael Sloan</span>
<i>at 2019-05-22T20:37:57Z</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/ddae344e80eee3044f773061126937a69d16c957">ddae344e</a></strong>
<div>
<span>by Michael Sloan</span>
<i>at 2019-05-22T20:41:31Z</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/78c3f3305e173c7667ffb47b97ff0ecacc279fe5">78c3f330</a></strong>
<div>
<span>by Kevin Buhr</span>
<i>at 2019-05-22T20:45:08Z</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/ecc9366a0e0db107c286935130837b2222e2dd82">ecc9366a</a></strong>
<div>
<span>by Alec Theriault</span>
<i>at 2019-05-22T20:48:45Z</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/2c15b85eb2541a64df0cdf3705fb9aa068634004">2c15b85e</a></strong>
<div>
<span>by Alp Mestanogullari</span>
<i>at 2019-05-22T20:52:22Z</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/6efe04dee3f4c584e0cd043b8424718f0791d1be">6efe04de</a></strong>
<div>
<span>by Ryan Scott</span>
<i>at 2019-05-22T20:56:01Z</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/4ba73e00c4887b58d85131601a15d00608acaa60">4ba73e00</a></strong>
<div>
<span>by Luite Stegeman</span>
<i>at 2019-05-22T20:59:39Z</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/7948f7702c23dcd474353c2843e82c01d81e3d53">7948f770</a></strong>
<div>
<span>by Sandy Maguire</span>
<i>at 2019-05-22T23:35:45Z</i>
</div>
<pre class="commit-message" style="white-space: pre-wrap; margin: 0;">Let the specialiser work on dicts under lambdas
Following the discussion under #16473, this change allows the
specializer to work on any dicts in a lambda, not just those that occur
at the beginning. This plays much more nicely for higher-rank
continuations that pack dicts.
</pre>
</li>
<li>
<strong><a href="https://gitlab.haskell.org/ghc/ghc/commit/73b0ac224ea82605875f69ca649acfc91bad4249">73b0ac22</a></strong>
<div>
<span>by Alp Mestanogullari</span>
<i>at 2019-05-22T23:35:47Z</i>
</div>
<pre class="commit-message" style="white-space: pre-wrap; margin: 0;">add an --hadrian mode to ./validate
When the '--hadrian' flag is passed to the validate script, we use hadrian
to build GHC, package it up in a binary distribution and later on run GHC's
testsuite against the said bindist, which gets installed locally in the process.
Along the way, this commit fixes a typo, an omission (build iserv binaries
before producing the bindist archive) and moves the Makefile that enables
'make install' on those bindists from being a list of strings in the code to
an actual file (it was becoming increasingly annoying to work with).
Finally, the Settings.Builders.Ghc part of this patch is necessary for being
able to use the installed binary distribution, in 'validate'.
</pre>
</li>
<li>
<strong><a href="https://gitlab.haskell.org/ghc/ghc/commit/7093cffaeedeaecf7b0bf9705a3cbfeed673f830">7093cffa</a></strong>
<div>
<span>by Iavor Diatchki</span>
<i>at 2019-05-22T23:35:49Z</i>
</div>
<pre class="commit-message" style="white-space: pre-wrap; margin: 0;">Add a `NOINLINE` pragma on `someNatVal` (#16586)
This fixes #16586, see `Note [NOINLINE someNatVal]` for details.
</pre>
</li>
<li>
<strong><a href="https://gitlab.haskell.org/ghc/ghc/commit/480acf975c5e7cf146e792dd2fb1511605a3ecb3">480acf97</a></strong>
<div>
<span>by Moritz Angermann</span>
<i>at 2019-05-22T23:35:49Z</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/136d05ad33804c55e0e309e5c5634c079efeae03">136d05ad</a></strong>
<div>
<span>by Moritz Angermann</span>
<i>at 2019-05-22T23:35:49Z</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/83ba4186f4557878a0a3524ca3abb350fad31d4c">83ba4186</a></strong>
<div>
<span>by Joshua Price</span>
<i>at 2019-05-22T23:35:51Z</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/40f37c4321fa5bde792970e6a4ae9e51781b7ef9">40f37c43</a></strong>
<div>
<span>by Krzysztof Gogolewski</span>
<i>at 2019-05-22T23:35:51Z</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/c57d58556d6641aabd3d7b0d3387ad7476faab29">c57d5855</a></strong>
<div>
<span>by Sebastian Graf</span>
<i>at 2019-05-22T23:35:51Z</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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<a href="#cb94ea134d6d52fab318831e397d2a5c789f2ef3">
compiler/deSugar/DsMeta.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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compiler/nativeGen/AsmCodeGen.hs
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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="#8e5716cfebabf9b3b1774b148dca4e897301a054">
compiler/specialise/Specialise.hs
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compiler/typecheck/TcSplice.hs
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compiler/typecheck/TcTyClsDecls.hs
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compiler/utils/Outputable.hs
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docs/users_guide/8.10.1-notes.rst
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docs/users_guide/bugs.rst
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docs/users_guide/ghci.rst
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docs/users_guide/glasgow_exts.rst
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<a href="#3756eedce60c7b2c32088b0f5f03fa4c31b626e8">
driver/utils/dynwrapper.c
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hadrian/bindist/Makefile
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hadrian/doc/testsuite.md
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hadrian/src/CommandLine.hs
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hadrian/src/Rules/BinaryDist.hs
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<a href="#52ac3fb9d79a975886f930e407b4c98c993e9e8e">
hadrian/src/Settings/Builders/Ghc.hs
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hadrian/src/Settings/Builders/RunTest.hs
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<a href="#92fed88efc6a2e0461a84dd0d0f0bfb89bdbc799">
libraries/base/GHC/TypeLits.hs
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<a href="#613eb2a1c706c7ea57be637d2c8ed135d1d2af29">
libraries/base/GHC/TypeNats.hs
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<a href="#69ef85a6e7ab6d9c208fe739eb45e851efa03461">
libraries/template-haskell/Language/Haskell/TH/PprLib.hs
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