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<div class="content">
<h3 style="margin-top: 20px; margin-bottom: 10px;">
Ben Gamari pushed to branch wip/T13660 at <a href="https://gitlab.haskell.org/ghc/ghc">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/ec2d93ebf2468e9250676da256936d8940de4723">ec2d93eb</a></strong>
<div>
<span> by Sebastian Graf </span> <i> at 2023-03-10T10:18:54-05:00 </i>
</div>
<pre class="commit-message" style='white-space: pre-wrap; display: block; font-size: 0.875rem; color: #333238; position: relative; font-family: var(--default-mono-font, "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: #fbfafd; border-radius: 2px; margin: 0; padding: 8px 12px; border: 1px solid #dcdcde;'>DmdAnal: Fix a panic on OPAQUE and trivial/PAP RHS (#22997)
We should not panic in `add_demands` (now `set_lam_dmds`), because that code
path is legimitely taken for OPAQUE PAP bindings, as in T22997.
Fixes #22997.
</pre>
</li>
<li>
<strong style="font-weight: bold;"><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/5b4628aeeca9b7ae0665378f0ce1b1d967c6a1c9">5b4628ae</a></strong>
<div>
<span> by Sylvain Henry </span> <i> at 2023-03-10T10:19:34-05:00 </i>
</div>
<pre class="commit-message" style='white-space: pre-wrap; display: block; font-size: 0.875rem; color: #333238; position: relative; font-family: var(--default-mono-font, "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: #fbfafd; border-radius: 2px; margin: 0; padding: 8px 12px; border: 1px solid #dcdcde;'>JS: remove dead code for old integer-gmp
</pre>
</li>
<li>
<strong style="font-weight: bold;"><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/bab232795865e9abb82b75c7e72329778e23a345">bab23279</a></strong>
<div>
<span> by Josh Meredith </span> <i> at 2023-03-10T23:24:49-05:00 </i>
</div>
<pre class="commit-message" style='white-space: pre-wrap; display: block; font-size: 0.875rem; color: #333238; position: relative; font-family: var(--default-mono-font, "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: #fbfafd; border-radius: 2px; margin: 0; padding: 8px 12px; border: 1px solid #dcdcde;'>JS: Fix implementation of MK_JSVAL
</pre>
</li>
<li>
<strong style="font-weight: bold;"><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/ec263a59b886ea616dabce349df7a377d5356dd5">ec263a59</a></strong>
<div>
<span> by Sebastian Graf </span> <i> at 2023-03-10T23:25:25-05:00 </i>
</div>
<pre class="commit-message" style='white-space: pre-wrap; display: block; font-size: 0.875rem; color: #333238; position: relative; font-family: var(--default-mono-font, "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: #fbfafd; border-radius: 2px; margin: 0; padding: 8px 12px; border: 1px solid #dcdcde;'>Simplify: Move `wantEtaExpansion` before expensive `do_eta_expand` check
There is no need to run arity analysis and what not if we are not in a
Simplifier phase that eta-expands or if we don't want to eta-expand the
expression in the first place.
Purely a refactoring with the goal of improving compiler perf.
</pre>
</li>
<li>
<strong style="font-weight: bold;"><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/047e9d4f10e4124899887449dc52b9e72a7d3ea6">047e9d4f</a></strong>
<div>
<span> by Josh Meredith </span> <i> at 2023-03-13T03:56:03+00:00 </i>
</div>
<pre class="commit-message" style='white-space: pre-wrap; display: block; font-size: 0.875rem; color: #333238; position: relative; font-family: var(--default-mono-font, "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: #fbfafd; border-radius: 2px; margin: 0; padding: 8px 12px; border: 1px solid #dcdcde;'>JS: fix implementation of forceBool to use JS backend syntax
</pre>
</li>
<li>
<strong style="font-weight: bold;"><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/559a480427a841b5189f2e6a84a38b02a7c2b8a1">559a4804</a></strong>
<div>
<span> by Sebastian Graf </span> <i> at 2023-03-13T07:31:23-04:00 </i>
</div>
<pre class="commit-message" style='white-space: pre-wrap; display: block; font-size: 0.875rem; color: #333238; position: relative; font-family: var(--default-mono-font, "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: #fbfafd; border-radius: 2px; margin: 0; padding: 8px 12px; border: 1px solid #dcdcde;'>Simplifier: `countValArgs` should not count Type args (#23102)
I observed miscompilations while working on !10088 caused by this.
Fixes #23102.
Metric Decrease:
T10421
</pre>
</li>
<li>
<strong style="font-weight: bold;"><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/536d1f90020dfd74c9e4211e128e051317da5bf6">536d1f90</a></strong>
<div>
<span> by Matthew Pickering </span> <i> at 2023-03-13T14:04:49+00:00 </i>
</div>
<pre class="commit-message" style='white-space: pre-wrap; display: block; font-size: 0.875rem; color: #333238; position: relative; font-family: var(--default-mono-font, "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: #fbfafd; border-radius: 2px; margin: 0; padding: 8px 12px; border: 1px solid #dcdcde;'>Bump Win32 to 2.13.4.0
Updates Win32 submodule
</pre>
</li>
<li>
<strong style="font-weight: bold;"><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/ee17001e54c3c6adccc5e3b67b629655c14da43a">ee17001e</a></strong>
<div>
<span> by Ben Gamari </span> <i> at 2023-03-13T21:18:24-04:00 </i>
</div>
<pre class="commit-message" style='white-space: pre-wrap; display: block; font-size: 0.875rem; color: #333238; position: relative; font-family: var(--default-mono-font, "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: #fbfafd; border-radius: 2px; margin: 0; padding: 8px 12px; border: 1px solid #dcdcde;'>ghc-bignum: Drop redundant include-dirs field</pre>
</li>
<li>
<strong style="font-weight: bold;"><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/c9c26cd60692feadcec78c51041df1dbf0caaf8f">c9c26cd6</a></strong>
<div>
<span> by Teo Camarasu </span> <i> at 2023-03-16T12:17:50-04:00 </i>
</div>
<pre class="commit-message" style='white-space: pre-wrap; display: block; font-size: 0.875rem; color: #333238; position: relative; font-family: var(--default-mono-font, "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: #fbfafd; border-radius: 2px; margin: 0; padding: 8px 12px; border: 1px solid #dcdcde;'>Fix BCO creation setting caps when -j > -N
* Remove calls to 'setNumCapabilities' in 'createBCOs'
These calls exist to ensure that 'createBCOs' can benefit from
parallelism. But this is not the right place to call
`setNumCapabilities`. Furthermore the logic differs from that in the
driver causing the capability count to be raised and lowered at each TH
call if -j > -N.
* Remove 'BCOOpts'
No longer needed as it was only used to thread the job count down to `createBCOs`
Resolves #23049
</pre>
</li>
<li>
<strong style="font-weight: bold;"><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/5ddbf5edcb64f04b3527efcac727813080380aa6">5ddbf5ed</a></strong>
<div>
<span> by Teo Camarasu </span> <i> at 2023-03-16T12:17:50-04:00 </i>
</div>
<pre class="commit-message" style='white-space: pre-wrap; display: block; font-size: 0.875rem; color: #333238; position: relative; font-family: var(--default-mono-font, "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: #fbfafd; border-radius: 2px; margin: 0; padding: 8px 12px; border: 1px solid #dcdcde;'>Add changelog entry for #23049
</pre>
</li>
<li>
<strong style="font-weight: bold;"><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/6e3ce9a4ce2509ce779102ec6f8e8ddcb676f94b">6e3ce9a4</a></strong>
<div>
<span> by Ben Gamari </span> <i> at 2023-03-16T12:18:26-04:00 </i>
</div>
<pre class="commit-message" style='white-space: pre-wrap; display: block; font-size: 0.875rem; color: #333238; position: relative; font-family: var(--default-mono-font, "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: #fbfafd; border-radius: 2px; margin: 0; padding: 8px 12px; border: 1px solid #dcdcde;'>configure: Fix FIND_CXX_STD_LIB test on Darwin
Annoyingly, Darwin's <cstddef> includes <version> and APFS is
case-insensitive. Consequently, it will end up #including the
`VERSION` file generated by the `configure` script on the second
and subsequent runs of the `configure` script.
See #23116.</pre>
</li>
<li>
<strong style="font-weight: bold;"><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/19d6d0397c223bbec3c372d2b8c04c2e356c44a8">19d6d039</a></strong>
<div>
<span> by sheaf </span> <i> at 2023-03-16T21:31:22+01:00 </i>
</div>
<pre class="commit-message" style='white-space: pre-wrap; display: block; font-size: 0.875rem; color: #333238; position: relative; font-family: var(--default-mono-font, "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: #fbfafd; border-radius: 2px; margin: 0; padding: 8px 12px; border: 1px solid #dcdcde;'>ghci: only keep the GlobalRdrEnv in ModInfo
The datatype GHC.UI.Info.ModInfo used to store a ModuleInfo,
which includes a TypeEnv. This can easily cause space leaks as we
have no way of forcing everything in a type environment.
In GHC, we only use the GlobalRdrEnv, which we can force completely.
So we only store that instead of a fully-fledged ModuleInfo.
</pre>
</li>
<li>
<strong style="font-weight: bold;"><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/73d07c6e1986bd2b3516d4f009cc1e30ba804f06">73d07c6e</a></strong>
<div>
<span> by Torsten Schmits </span> <i> at 2023-03-17T14:36:49-04:00 </i>
</div>
<pre class="commit-message" style='white-space: pre-wrap; display: block; font-size: 0.875rem; color: #333238; position: relative; font-family: var(--default-mono-font, "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: #fbfafd; border-radius: 2px; margin: 0; padding: 8px 12px; border: 1px solid #dcdcde;'>Add structured error messages for GHC.Tc.Utils.Backpack
Tracking ticket: #20119
MR: !10127
This converts uses of `mkTcRnUnknownMessage` to newly added constructors
of `TcRnMessage`.
One occurrence, when handing a nested error from the interface loading
machinery, was omitted. It will be handled by a subsequent changeset
that addresses interface errors.
</pre>
</li>
<li>
<strong style="font-weight: bold;"><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/a13affce1a6196ccff6c126112ab26823c85e727">a13affce</a></strong>
<div>
<span> by Andrei Borzenkov </span> <i> at 2023-03-21T11:17:17-04:00 </i>
</div>
<pre class="commit-message" style='white-space: pre-wrap; display: block; font-size: 0.875rem; color: #333238; position: relative; font-family: var(--default-mono-font, "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: #fbfafd; border-radius: 2px; margin: 0; padding: 8px 12px; border: 1px solid #dcdcde;'>Rename () into Unit, (,,...,,) into Tuple<n> (#21294)
This patch implements a part of GHC Proposal #475.
The key change is in GHC.Tuple.Prim:
- data () = ()
- data (a,b) = (a,b)
- data (a,b,c) = (a,b,c)
...
+ data Unit = ()
+ data Tuple2 a b = (a,b)
+ data Tuple3 a b c = (a,b,c)
...
And the rest of the patch makes sure that Unit and Tuple<n>
are pretty-printed as () and (,,...,,) in various contexts.
Updates the haddock submodule.
Co-authored-by: Vladislav Zavialov <vlad.z.4096@gmail.com>
</pre>
</li>
<li>
<strong style="font-weight: bold;"><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/23642bf609a5da928992b4fae9242194f848ff2f">23642bf6</a></strong>
<div>
<span> by Adam Sandberg Ericsson </span> <i> at 2023-03-21T11:17:53-04:00 </i>
</div>
<pre class="commit-message" style='white-space: pre-wrap; display: block; font-size: 0.875rem; color: #333238; position: relative; font-family: var(--default-mono-font, "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: #fbfafd; border-radius: 2px; margin: 0; padding: 8px 12px; border: 1px solid #dcdcde;'>docs: fix some wrongs in the eventlog format documentation
</pre>
</li>
<li>
<strong style="font-weight: bold;"><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/90159773f1aeaf52d7ac3ba82d21c0f92c86ea15">90159773</a></strong>
<div>
<span> by Adam Sandberg Ericsson </span> <i> at 2023-03-21T11:17:53-04:00 </i>
</div>
<pre class="commit-message" style='white-space: pre-wrap; display: block; font-size: 0.875rem; color: #333238; position: relative; font-family: var(--default-mono-font, "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: #fbfafd; border-radius: 2px; margin: 0; padding: 8px 12px; border: 1px solid #dcdcde;'>docs: explain the BLOCK_MARKER event
</pre>
</li>
<li>
<strong style="font-weight: bold;"><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/ab1c25e866ed39d60e378a6f46c0c89a39e599cd">ab1c25e8</a></strong>
<div>
<span> by Adam Sandberg Ericsson </span> <i> at 2023-03-21T11:17:53-04:00 </i>
</div>
<pre class="commit-message" style='white-space: pre-wrap; display: block; font-size: 0.875rem; color: #333238; position: relative; font-family: var(--default-mono-font, "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: #fbfafd; border-radius: 2px; margin: 0; padding: 8px 12px; border: 1px solid #dcdcde;'>docs: add BlockedOnMVarRead thread status in eventlog encodings
</pre>
</li>
<li>
<strong style="font-weight: bold;"><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/898afaef53470adbc03b4a8272c209b6f9aed6fa">898afaef</a></strong>
<div>
<span> by Adam Sandberg Ericsson </span> <i> at 2023-03-21T11:17:53-04:00 </i>
</div>
<pre class="commit-message" style='white-space: pre-wrap; display: block; font-size: 0.875rem; color: #333238; position: relative; font-family: var(--default-mono-font, "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: #fbfafd; border-radius: 2px; margin: 0; padding: 8px 12px; border: 1px solid #dcdcde;'>docs: add TASK_DELETE event in eventlog encodings
</pre>
</li>
<li>
<strong style="font-weight: bold;"><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/bb05b4ccdfe81e9fc60065337eafa9c94499ad61">bb05b4cc</a></strong>
<div>
<span> by Adam Sandberg Ericsson </span> <i> at 2023-03-21T11:17:53-04:00 </i>
</div>
<pre class="commit-message" style='white-space: pre-wrap; display: block; font-size: 0.875rem; color: #333238; position: relative; font-family: var(--default-mono-font, "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: #fbfafd; border-radius: 2px; margin: 0; padding: 8px 12px; border: 1px solid #dcdcde;'>docs: add WALL_CLOCK_TIME event in eventlog encodings
</pre>
</li>
<li>
<strong style="font-weight: bold;"><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/eeea0343f1bd5e3359c32c10fffb2a300c4924ba">eeea0343</a></strong>
<div>
<span> by Torsten Schmits </span> <i> at 2023-03-21T11:18:34-04:00 </i>
</div>
<pre class="commit-message" style='white-space: pre-wrap; display: block; font-size: 0.875rem; color: #333238; position: relative; font-family: var(--default-mono-font, "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: #fbfafd; border-radius: 2px; margin: 0; padding: 8px 12px; border: 1px solid #dcdcde;'>Add structured error messages for GHC.Tc.Utils.Env
Tracking ticket: #20119
MR: !10129
This converts uses of `mkTcRnUnknownMessage` to newly added constructors
of `TcRnMessage`.
</pre>
</li>
<li>
<strong style="font-weight: bold;"><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/be1d4be8d09072091b77cb68ccf234434754af00">be1d4be8</a></strong>
<div>
<span> by Bodigrim </span> <i> at 2023-03-21T11:19:13-04:00 </i>
</div>
<pre class="commit-message" style='white-space: pre-wrap; display: block; font-size: 0.875rem; color: #333238; position: relative; font-family: var(--default-mono-font, "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: #fbfafd; border-radius: 2px; margin: 0; padding: 8px 12px; border: 1px solid #dcdcde;'>Document pdep / pext primops
</pre>
</li>
<li>
<strong style="font-weight: bold;"><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/e8b4aac437b2620d93546a57eb5818f317a4549e">e8b4aac4</a></strong>
<div>
<span> by Alex Mason </span> <i> at 2023-03-21T18:11:04-04:00 </i>
</div>
<pre class="commit-message" style='white-space: pre-wrap; display: block; font-size: 0.875rem; color: #333238; position: relative; font-family: var(--default-mono-font, "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: #fbfafd; border-radius: 2px; margin: 0; padding: 8px 12px; border: 1px solid #dcdcde;'>Allow LLVM backend to use HDoc for faster file generation.
Also remove the MetaStmt constructor from LlvmStatement and places the annotations into the Store statement.
Includes “Implement a workaround for -no-asm-shortcutting bug“ (https://gitlab.haskell.org/ghc/ghc/-/commit/2fda9e0df886cc551e2cd6b9c2a384192bdc3045)
</pre>
</li>
<li>
<strong style="font-weight: bold;"><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/ea24360d0548c905b6b2427b5cdcb82d3cd296ae">ea24360d</a></strong>
<div>
<span> by Luite Stegeman </span> <i> at 2023-03-21T18:11:44-04:00 </i>
</div>
<pre class="commit-message" style='white-space: pre-wrap; display: block; font-size: 0.875rem; color: #333238; position: relative; font-family: var(--default-mono-font, "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: #fbfafd; border-radius: 2px; margin: 0; padding: 8px 12px; border: 1px solid #dcdcde;'>Compute LambdaFormInfo when using JavaScript backend.
CmmCgInfos is needed to write interface files, but the
JavaScript backend does not generate it, causing
"Name without LFInfo" warnings.
This patch adds a conservative but always correct
CmmCgInfos when the JavaScript backend is used.
Fixes #23053
</pre>
</li>
<li>
<strong style="font-weight: bold;"><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/926ad6ded5cb5e8162914e746ee001fc8d1658ec">926ad6de</a></strong>
<div>
<span> by Simon Peyton Jones </span> <i> at 2023-03-22T01:03:08-04:00 </i>
</div>
<pre class="commit-message" style='white-space: pre-wrap; display: block; font-size: 0.875rem; color: #333238; position: relative; font-family: var(--default-mono-font, "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: #fbfafd; border-radius: 2px; margin: 0; padding: 8px 12px; border: 1px solid #dcdcde;'>Be more careful about quantification
This MR is driven by #23051. It does several things:
* It is guided by the generalisation plan described in #20686.
But it is still far from a complete implementation of that plan.
* Add Note [Inferred type with escaping kind] to GHC.Tc.Gen.Bind.
This explains that we don't (yet, pending #20686) directly
prevent generalising over escaping kinds.
* In `GHC.Tc.Utils.TcMType.defaultTyVar` we default RuntimeRep
and Multiplicity variables, beause we don't want to quantify over
them. We want to do the same for a Concrete tyvar, but there is
nothing sensible to default it to (unless it has kind RuntimeRep,
in which case it'll be caught by an earlier case). So we promote
instead.
* Pure refactoring in GHC.Tc.Solver:
* Rename decideMonoTyVars to decidePromotedTyVars, since that's
what it does.
* Move the actual promotion of the tyvars-to-promote from
`defaultTyVarsAndSimplify` to `decidePromotedTyVars`. This is a
no-op; just tidies up the code. E.g then we don't need to
return the promoted tyvars from `decidePromotedTyVars`.
* A little refactoring in `defaultTyVarsAndSimplify`, but no
change in behaviour.
* When making a TauTv unification variable into a ConcreteTv
(in GHC.Tc.Utils.Concrete.makeTypeConcrete), preserve the occ-name
of the type variable. This just improves error messages.
* Kill off dead code: GHC.Tc.Utils.TcMType.newConcreteHole
</pre>
</li>
<li>
<strong style="font-weight: bold;"><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/0ab0cc119c6d222d50e0970fddb679a6eeef80de">0ab0cc11</a></strong>
<div>
<span> by Sylvain Henry </span> <i> at 2023-03-22T01:03:48-04:00 </i>
</div>
<pre class="commit-message" style='white-space: pre-wrap; display: block; font-size: 0.875rem; color: #333238; position: relative; font-family: var(--default-mono-font, "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: #fbfafd; border-radius: 2px; margin: 0; padding: 8px 12px; border: 1px solid #dcdcde;'>Testsuite: use appropriate predicate for ManyUbxSums test (#22576)
</pre>
</li>
<li>
<strong style="font-weight: bold;"><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/048c881ee5b11716e37cebe43f2d2eac878c04fb">048c881e</a></strong>
<div>
<span> by romes </span> <i> at 2023-03-22T01:04:24-04:00 </i>
</div>
<pre class="commit-message" style='white-space: pre-wrap; display: block; font-size: 0.875rem; color: #333238; position: relative; font-family: var(--default-mono-font, "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: #fbfafd; border-radius: 2px; margin: 0; padding: 8px 12px; border: 1px solid #dcdcde;'>fix: Incorrect @since annotations in GHC.TypeError
Fixes #23128
</pre>
</li>
<li>
<strong style="font-weight: bold;"><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/a1528b68318d5b94acad1f427037e4d326847468">a1528b68</a></strong>
<div>
<span> by Sylvain Henry </span> <i> at 2023-03-22T01:05:04-04:00 </i>
</div>
<pre class="commit-message" style='white-space: pre-wrap; display: block; font-size: 0.875rem; color: #333238; position: relative; font-family: var(--default-mono-font, "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: #fbfafd; border-radius: 2px; margin: 0; padding: 8px 12px; border: 1px solid #dcdcde;'>Testsuite: use req_interp predicate for T16318 (#22370)
</pre>
</li>
<li>
<strong style="font-weight: bold;"><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/ad765b6f0bb23576fb4e7690a29fa07fc1dfff11">ad765b6f</a></strong>
<div>
<span> by Sylvain Henry </span> <i> at 2023-03-22T01:05:04-04:00 </i>
</div>
<pre class="commit-message" style='white-space: pre-wrap; display: block; font-size: 0.875rem; color: #333238; position: relative; font-family: var(--default-mono-font, "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: #fbfafd; border-radius: 2px; margin: 0; padding: 8px 12px; border: 1px solid #dcdcde;'>Testsuite: use req_interp predicate for T20214
</pre>
</li>
<li>
<strong style="font-weight: bold;"><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/e0b8eaf3fc3d2ebbdcc86610b889930dbe5b4cdb">e0b8eaf3</a></strong>
<div>
<span> by Simon Peyton Jones </span> <i> at 2023-03-22T09:50:13+00:00 </i>
</div>
<pre class="commit-message" style='white-space: pre-wrap; display: block; font-size: 0.875rem; color: #333238; position: relative; font-family: var(--default-mono-font, "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: #fbfafd; border-radius: 2px; margin: 0; padding: 8px 12px; border: 1px solid #dcdcde;'>Refactor the constraint solver pipeline
The big change is to put the entire type-equality solver into
GHC.Tc.Solver.Equality, rather than scattering it over Canonical
and Interact. Other changes
* EqCt becomes its own data type, a bit like QCInst. This is
great because EqualCtList is then just [EqCt]
* New module GHC.Tc.Solver.Dict has come of the class-contraint
solver. In due course it will be all. One step at a time.
This MR is intended to have zero change in behaviour: it is a
pure refactor. It opens the way to subsequent tidying up, we
believe.
</pre>
</li>
<li>
<strong style="font-weight: bold;"><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/cedf9a3b7a74a7c1c09e8b994edc40a2447dae08">cedf9a3b</a></strong>
<div>
<span> by Torsten Schmits </span> <i> at 2023-03-22T15:31:18-04:00 </i>
</div>
<pre class="commit-message" style='white-space: pre-wrap; display: block; font-size: 0.875rem; color: #333238; position: relative; font-family: var(--default-mono-font, "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: #fbfafd; border-radius: 2px; margin: 0; padding: 8px 12px; border: 1px solid #dcdcde;'>Add structured error messages for GHC.Tc.Utils.TcMType
Tracking ticket: #20119
MR: !10138
This converts uses of `mkTcRnUnknownMessage` to newly added constructors
of `TcRnMessage`.
</pre>
</li>
<li>
<strong style="font-weight: bold;"><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/30d45e971d94b3c28296a3f20f94275f38bc89d1">30d45e97</a></strong>
<div>
<span> by Sylvain Henry </span> <i> at 2023-03-22T15:32:01-04:00 </i>
</div>
<pre class="commit-message" style='white-space: pre-wrap; display: block; font-size: 0.875rem; color: #333238; position: relative; font-family: var(--default-mono-font, "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: #fbfafd; border-radius: 2px; margin: 0; padding: 8px 12px; border: 1px solid #dcdcde;'>Testsuite: use js_skip for T2615 (#22374)
</pre>
</li>
<li>
<strong style="font-weight: bold;"><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/3ebaff02f74cb003f301f303a6dc3c361f2aafc6">3ebaff02</a></strong>
<div>
<span> by Ben Gamari </span> <i> at 2023-03-25T23:39:39-04:00 </i>
</div>
<pre class="commit-message" style='white-space: pre-wrap; display: block; font-size: 0.875rem; color: #333238; position: relative; font-family: var(--default-mono-font, "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: #fbfafd; border-radius: 2px; margin: 0; padding: 8px 12px; border: 1px solid #dcdcde;'>base: Add test for #13660
</pre>
</li>
<li>
<strong style="font-weight: bold;"><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/1ed35ec87c6bb82c09445dd0c3d27a98f5c104ce">1ed35ec8</a></strong>
<div>
<span> by Ben Gamari </span> <i> at 2023-03-25T23:47:56-04:00 </i>
</div>
<pre class="commit-message" style='white-space: pre-wrap; display: block; font-size: 0.875rem; color: #333238; position: relative; font-family: var(--default-mono-font, "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: #fbfafd; border-radius: 2px; margin: 0; padding: 8px 12px; border: 1px solid #dcdcde;'>base: Ensure that POSIX FilePaths don't contain NULs
POSIX filepaths may not contain the NUL octet but previously we did not
reject such paths. This could be exploited by untrusted input to cause
discrepancies between various `FilePath` queries and the opened
filename. For instance, `readFile "hello.so\x00.txt"` would open the
file `"hello.so"` yet `takeFileExtension` would return `".txt"`.
Fixes #13660 on POSIX platforms.
</pre>
</li>
<li>
<strong style="font-weight: bold;"><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/d641c7db81c4ecf07f0d6a82218bb6d93d40b450">d641c7db</a></strong>
<div>
<span> by Ben Gamari </span> <i> at 2023-03-25T23:47:56-04:00 </i>
</div>
<pre class="commit-message" style='white-space: pre-wrap; display: block; font-size: 0.875rem; color: #333238; position: relative; font-family: var(--default-mono-font, "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: #fbfafd; border-radius: 2px; margin: 0; padding: 8px 12px; border: 1px solid #dcdcde;'>base: Reject NUL codepoints in Windows FilePaths
Similarly to POSIX, Windows rejects NULs in FilePaths. Unlike POSIX, we
can check the `FilePath` rather than its encoding since all paths are
UTF-16 on Windows.
Fixes #13660 on Windows.
</pre>
</li>
</ul>
<h4 style="margin-top: 10px; margin-bottom: 10px;">
30 changed files:
</h4>
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<a href="#d0d96a6d03668aeab20ebe05e2c4ccb798c7e64c">
compiler/GHC.hs
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<a href="#0887cf39c5cdf9cf8d6758f410d7dab3023c0d77">
compiler/GHC/Builtin/Names.hs
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<a href="#377cfd14c1f92357465df995ec6537b074051322">
compiler/GHC/Builtin/Types.hs
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<a href="#8dc7109003a77f8a82e987dc1de31466aa956174">
compiler/GHC/Builtin/Uniques.hs
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<a href="#451725cc4e5d443a3b7c2adcdf224840f953b7e2">
compiler/GHC/Builtin/primops.txt.pp
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<a href="#1aff3a222f2ec5c5498930c3d145b401cc300028">
compiler/GHC/CmmToLlvm.hs
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compiler/GHC/CmmToLlvm/Base.hs
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<a href="#a49dbda5c8a9c380f638f55cf5ade791db0017cc">
compiler/GHC/CmmToLlvm/CodeGen.hs
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compiler/GHC/CmmToLlvm/Ppr.hs
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compiler/GHC/Core/InstEnv.hs
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compiler/GHC/Core/Opt/DmdAnal.hs
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compiler/GHC/Core/Opt/Simplify/Utils.hs
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compiler/GHC/Data/Bag.hs
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compiler/GHC/Driver/Config.hs
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compiler/GHC/Driver/Main.hs
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compiler/GHC/HsToCore/Foreign/JavaScript.hs
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compiler/GHC/Linker/Loader.hs
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compiler/GHC/Llvm/MetaData.hs
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compiler/GHC/Llvm/Ppr.hs
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compiler/GHC/Llvm/Syntax.hs
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compiler/GHC/Llvm/Types.hs
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compiler/GHC/Rename/Splice.hs
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compiler/GHC/Rename/Utils.hs
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compiler/GHC/Runtime/Interpreter.hs
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compiler/GHC/StgToJS/Linker/Utils.hs
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compiler/GHC/Tc/Errors/Ppr.hs
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compiler/GHC/Tc/Errors/Types.hs
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compiler/GHC/Tc/Gen/Bind.hs
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compiler/GHC/Tc/Gen/HsType.hs
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compiler/GHC/Tc/Instance/Class.hs
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</h5>
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