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<h3 style="margin-top: 20px; margin-bottom: 10px;">
Vladislav Zavialov pushed to branch wip/int-index/decl-invis-binders at <a href="https://gitlab.haskell.org/ghc/ghc" style="color: #1068bf;">Glasgow Haskell Compiler / GHC</a>
</h3>
<h4 style="margin-top: 10px; margin-bottom: 10px;">
Commits:
</h4>
<ul>
<li>
<strong style="font-weight: bold;"><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/6206cb9287f3f6e70c669660a646a65274870d2b" style="color: #1068bf;">6206cb92</a></strong>
<div>
<span> by Simon Peyton Jones </span> <i> at 2023-01-07T12:14:40-05:00 </i>
</div>
<pre class="commit-message" style='white-space: pre-wrap; display: block; font-size: 0.8125rem; color: #303030; position: relative; font-family: "Menlo", "DejaVu Sans Mono", "Liberation Mono", "Consolas", "Ubuntu Mono", "Courier New", "andale mono", "lucida console", monospace; word-break: break-all; word-wrap: break-word; background-color: #fafafa; border-radius: 2px; margin: 0; padding: 8px 12px; border: 1px solid #dbdbdb;'>Make FloatIn robust to shadowing
This MR fixes #22622. See the new
Note [Shadowing and name capture]
I did a bit of refactoring in sepBindsByDropPoint too.
The bug doesn't manifest in HEAD, but it did show up in 9.4,
so we should backport this patch to 9.4
</pre>
</li>
<li>
<strong style="font-weight: bold;"><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/a960ca817d6ad0109ea6edda50da3902cc538e86" style="color: #1068bf;">a960ca81</a></strong>
<div>
<span> by Matthew Pickering </span> <i> at 2023-01-07T12:15:15-05:00 </i>
</div>
<pre class="commit-message" style='white-space: pre-wrap; display: block; font-size: 0.8125rem; color: #303030; position: relative; font-family: "Menlo", "DejaVu Sans Mono", "Liberation Mono", "Consolas", "Ubuntu Mono", "Courier New", "andale mono", "lucida console", monospace; word-break: break-all; word-wrap: break-word; background-color: #fafafa; border-radius: 2px; margin: 0; padding: 8px 12px; border: 1px solid #dbdbdb;'>T10955: Set DYLD_LIBRARY_PATH for darwin
The correct path to direct the dynamic linker on darwin is
DYLD_LIBRARY_PATH rather than LD_LIBRARY_PATH. On recent versions of OSX
using LD_LIBRARY_PATH seems to have stopped working.
For more reading see:
https://stackoverflow.com/questions/3146274/is-it-ok-to-use-dyld-library-path-on-mac-os-x-and-whats-the-dynamic-library-s
</pre>
</li>
<li>
<strong style="font-weight: bold;"><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/734847108420cf826a807c30ad54651659cf3a08" style="color: #1068bf;">73484710</a></strong>
<div>
<span> by Matthew Pickering </span> <i> at 2023-01-07T12:15:15-05:00 </i>
</div>
<pre class="commit-message" style='white-space: pre-wrap; display: block; font-size: 0.8125rem; color: #303030; position: relative; font-family: "Menlo", "DejaVu Sans Mono", "Liberation Mono", "Consolas", "Ubuntu Mono", "Courier New", "andale mono", "lucida console", monospace; word-break: break-all; word-wrap: break-word; background-color: #fafafa; border-radius: 2px; margin: 0; padding: 8px 12px; border: 1px solid #dbdbdb;'>Skip T18623 on darwin (to add to the long list of OSs)
On recent versions of OSX, running `ulimit -v` results in
```
ulimit: setrlimit failed: invalid argument
```
Time is too short to work out what random stuff Apple has been doing
with ulimit, so just skip the test like we do for other platforms.
</pre>
</li>
<li>
<strong style="font-weight: bold;"><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/8c0ea25fb4a27d4729aabf73f4c00b912bb0c58d" style="color: #1068bf;">8c0ea25f</a></strong>
<div>
<span> by Matthew Pickering </span> <i> at 2023-01-07T12:15:15-05:00 </i>
</div>
<pre class="commit-message" style='white-space: pre-wrap; display: block; font-size: 0.8125rem; color: #303030; position: relative; font-family: "Menlo", "DejaVu Sans Mono", "Liberation Mono", "Consolas", "Ubuntu Mono", "Courier New", "andale mono", "lucida console", monospace; word-break: break-all; word-wrap: break-word; background-color: #fafafa; border-radius: 2px; margin: 0; padding: 8px 12px; border: 1px solid #dbdbdb;'>Pass -Wl,-no_fixup_chains to ld64 when appropiate
Recent versions of MacOS use a version of ld where `-fixup_chains` is on by default.
This is incompatible with our usage of `-undefined dynamic_lookup`. Therefore we
explicitly disable `fixup-chains` by passing `-no_fixup_chains` to the linker on
darwin. This results in a warning of the form:
ld: warning: -undefined dynamic_lookup may not work with chained fixups
The manual explains the incompatible nature of these two flags:
-undefined treatment
Specifies how undefined symbols are to be treated. Options are: error, warning,
suppress, or dynamic_lookup. The default is error. Note: dynamic_lookup that
depends on lazy binding will not work with chained fixups.
A relevant ticket is #22429
Here are also a few other links which are relevant to the issue:
Official comment: https://developer.apple.com/forums/thread/719961
More relevant links:
https://openradar.appspot.com/radar?id=5536824084660224
https://github.com/python/cpython/issues/97524
Note in release notes: https://developer.apple.com/documentation/xcode-release-notes/xcode-13-releas e-notes
</pre>
</li>
<li>
<strong style="font-weight: bold;"><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/365b30453f0f7361edd40d32ebaa4bea784f3a2b" style="color: #1068bf;">365b3045</a></strong>
<div>
<span> by Matthew Pickering </span> <i> at 2023-01-09T02:36:20-05:00 </i>
</div>
<pre class="commit-message" style='white-space: pre-wrap; display: block; font-size: 0.8125rem; color: #303030; position: relative; font-family: "Menlo", "DejaVu Sans Mono", "Liberation Mono", "Consolas", "Ubuntu Mono", "Courier New", "andale mono", "lucida console", monospace; word-break: break-all; word-wrap: break-word; background-color: #fafafa; border-radius: 2px; margin: 0; padding: 8px 12px; border: 1px solid #dbdbdb;'>Disable split sections on aarch64-deb10 build
See #22722
Failure on this job:
https://gitlab.haskell.org/ghc/ghc/-/jobs/1287852
```
Unexpected failures:
/builds/ghc/ghc/tmp/ghctest-s3d8g1hj/test spaces/testsuite/tests/th/T10828.run T10828 [exit code non-0] (ext-interp)
/builds/ghc/ghc/tmp/ghctest-s3d8g1hj/test spaces/testsuite/tests/th/T13123.run T13123 [exit code non-0] (ext-interp)
/builds/ghc/ghc/tmp/ghctest-s3d8g1hj/test spaces/testsuite/tests/th/T20590.run T20590 [exit code non-0] (ext-interp)
Appending 232 stats to file: /builds/ghc/ghc/performance-metrics.tsv
```
```
Compile failed (exit code 1) errors were:
data family D_0 a_1 :: * -> *
data instance D_0 GHC.Types.Int GHC.Types.Bool :: * where
DInt_2 :: D_0 GHC.Types.Int GHC.Types.Bool
data E_3 where MkE_4 :: a_5 -> E_3
data Foo_6 a_7 b_8 where
MkFoo_9, MkFoo'_10 :: a_11 -> Foo_6 a_11 b_12
newtype Bar_13 :: * -> GHC.Types.Bool -> * where
MkBar_14 :: a_15 -> Bar_13 a_15 b_16
data T10828.T (a_0 :: *) where
T10828.MkT :: forall (a_1 :: *) . a_1 -> a_1 -> T10828.T a_1
T10828.MkC :: forall (a_2 :: *) (b_3 :: *) . (GHC.Types.~) a_2
GHC.Types.Int => {T10828.foo :: a_2,
T10828.bar :: b_3} -> T10828.T GHC.Types.Int
T10828.hs:1:1: error: [GHC-87897]
Exception when trying to run compile-time code:
ghc-iserv terminated (-4)
Code: (do TyConI dec <- runQ $ reify (mkName "T")
runIO $ putStrLn (pprint dec) >> hFlush stdout
d <- runQ
$ [d| data T' a :: Type
where
MkT' :: a -> a -> T' a
MkC' :: forall a b. (a ~ Int) => {foo :: a, bar :: b} -> T' Int |]
runIO $ putStrLn (pprint d) >> hFlush stdout
....)
*** unexpected failure for T10828(ext-interp)
=====> 7000 of 9215 [0, 1, 0]
=====> 7000 of 9215 [0, 1, 0]
=====> 7000 of 9215 [0, 1, 0]
=====> 7000 of 9215 [0, 1, 0]
Compile failed (exit code 1) errors were:
T13123.hs:1:1: error: [GHC-87897]
Exception when trying to run compile-time code:
ghc-iserv terminated (-4)
Code: ([d| data GADT
where MkGADT :: forall k proxy (a :: k). proxy a -> GADT |])
*** unexpected failure for T13123(ext-interp)
=====> 7100 of 9215 [0, 2, 0]
=====> 7100 of 9215 [0, 2, 0]
=====> 7200 of 9215 [0, 2, 0]
Compile failed (exit code 1) errors were:
T20590.hs:1:1: error: [GHC-87897]
Exception when trying to run compile-time code:
ghc-iserv terminated (-4)
Code: ([d| data T where MkT :: forall a. a -> T |])
*** unexpected failure for T20590(ext-interp)
```
Looks fairly worrying to me.
</pre>
</li>
<li>
<strong style="font-weight: bold;"><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/965a273510adfac4f041a31182c2fec82e614e47" style="color: #1068bf;">965a2735</a></strong>
<div>
<span> by Alan Zimmerman </span> <i> at 2023-01-09T02:36:20-05:00 </i>
</div>
<pre class="commit-message" style='white-space: pre-wrap; display: block; font-size: 0.8125rem; color: #303030; position: relative; font-family: "Menlo", "DejaVu Sans Mono", "Liberation Mono", "Consolas", "Ubuntu Mono", "Courier New", "andale mono", "lucida console", monospace; word-break: break-all; word-wrap: break-word; background-color: #fafafa; border-radius: 2px; margin: 0; padding: 8px 12px; border: 1px solid #dbdbdb;'>EPA: exact print HsDocTy
To match ghc-exactprint
https://github.com/alanz/ghc-exactprint/pull/121
</pre>
</li>
<li>
<strong style="font-weight: bold;"><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/6d1a6fceb6551d86099803a347a4691ae7f279bd" style="color: #1068bf;">6d1a6fce</a></strong>
<div>
<span> by Vladislav Zavialov </span> <i> at 2023-01-09T18:20:59+03:00 </i>
</div>
<pre class="commit-message" style='white-space: pre-wrap; display: block; font-size: 0.8125rem; color: #303030; position: relative; font-family: "Menlo", "DejaVu Sans Mono", "Liberation Mono", "Consolas", "Ubuntu Mono", "Courier New", "andale mono", "lucida console", monospace; word-break: break-all; word-wrap: break-word; background-color: #fafafa; border-radius: 2px; margin: 0; padding: 8px 12px; border: 1px solid #dbdbdb;'>workaround: bump template-haskell
</pre>
</li>
<li>
<strong style="font-weight: bold;"><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/7faabed42b59a1bbdd864d9dc936618b0b7ff3fb" style="color: #1068bf;">7faabed4</a></strong>
<div>
<span> by Vladislav Zavialov </span> <i> at 2023-01-09T22:52:21+03:00 </i>
</div>
<pre class="commit-message" style='white-space: pre-wrap; display: block; font-size: 0.8125rem; color: #303030; position: relative; font-family: "Menlo", "DejaVu Sans Mono", "Liberation Mono", "Consolas", "Ubuntu Mono", "Courier New", "andale mono", "lucida console", monospace; word-break: break-all; word-wrap: break-word; background-color: #fafafa; border-radius: 2px; margin: 0; padding: 8px 12px; border: 1px solid #dbdbdb;'>WIP: Invisible binders in type declarations
Metric Decrease:
MultiLayerModulesTH_OneShot
</pre>
</li>
</ul>
<h4 style="margin-top: 10px; margin-bottom: 10px;">
30 changed files:
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.gitlab/gen_ci.hs
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<a href="#06764eb0158306b83ab1998d18316392a51838c2" style="color: #1068bf;">
compiler/GHC/Builtin/Names/TH.hs
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<a href="#09072575aca2480de8c1966011972c529575ba5d" style="color: #1068bf;">
compiler/GHC/Core/Opt/FloatIn.hs
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compiler/GHC/Core/TyCon.hs
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compiler/GHC/Hs/Type.hs
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compiler/GHC/Tc/Errors/Types.hs
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compiler/GHC/Tc/Gen/HsType.hs
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compiler/GHC/Tc/Gen/Splice.hs
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compiler/GHC/Tc/TyCl.hs
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compiler/GHC/Tc/Utils/TcMType.hs
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compiler/GHC/ThToHs.hs
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compiler/GHC/Types/Error/Codes.hs
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compiler/Language/Haskell/Syntax/Type.hs
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libraries/ghci/GHCi/TH/Binary.hs
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libraries/template-haskell/Language/Haskell/TH.hs
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libraries/template-haskell/Language/Haskell/TH/Lib.hs
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libraries/template-haskell/Language/Haskell/TH/Lib/Internal.hs
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libraries/template-haskell/Language/Haskell/TH/Ppr.hs
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libraries/template-haskell/Language/Haskell/TH/Syntax.hs
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libraries/template-haskell/changelog.md
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