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<h3>
Ben Gamari pushed to branch wip/T16742
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/5ffc266e9c5ec8ed6010835165a65bd1f6b56dd4">5ffc266e</a></strong>
<div>
<span>by Ben Gamari</span>
<i>at 2019-06-13T06:48:13Z</i>
</div>
<pre class="commit-message" style="white-space: pre-wrap; margin: 0;">Add a few missing llvm-targets
This should finally fix #14261.
[skip ci]
</pre>
</li>
<li>
<strong><a href="https://gitlab.haskell.org/ghc/ghc/commit/fc6b23be509e290f8d27775a1c637284a335ed81">fc6b23be</a></strong>
<div>
<span>by Phuong Trinh</span>
<i>at 2019-06-13T06:48:50Z</i>
</div>
<pre class="commit-message" style="white-space: pre-wrap; margin: 0;">Fix #16525: ObjectCode freed wrongly because of lack of info header check
`checkUnload` currently doesn't check the info header of static objects.
Thus, it may free an `ObjectCode` struct wrongly even if there's still a
live static object whose info header lies in a mapped section of that
`ObjectCode`. This fixes the issue by adding an appropriate check.
</pre>
</li>
<li>
<strong><a href="https://gitlab.haskell.org/ghc/ghc/commit/a657543c4d676b7e6e0984b72b31dd95949855e4">a657543c</a></strong>
<div>
<span>by Ben Gamari</span>
<i>at 2019-06-13T06:49:25Z</i>
</div>
<pre class="commit-message" style="white-space: pre-wrap; margin: 0;">PrelRules: Ensure that string unpack/append rule fires with source notes
Previously the presence of source notes could hide nested applications
of `unpackFoldrCString#` from our constant folding logic. For instance,
consider the expression:
```haskell
unpackFoldrCString# "foo" c (unpackFoldrCString# "baz" c n)
```
Specifically, ticks appearing in two places can defeat the rule:
a. Surrounding the inner application of `unpackFoldrCString#`
b. Surrounding the fold function, `c`
The latter caused the `str_rules` testcase to fail when `base` was built
with `-g3`.
Fixes #16740.
</pre>
</li>
<li>
<strong><a href="https://gitlab.haskell.org/ghc/ghc/commit/e98d32a62977fe1057ebbb1b6ed8990438cb9896">e98d32a6</a></strong>
<div>
<span>by David Eichmann</span>
<i>at 2019-06-13T06:50:00Z</i>
</div>
<pre class="commit-message" style="white-space: pre-wrap; margin: 0;">Hadrian: Track RTS library symlink targets
This requires creating RTS library symlinks when registering, outside
of the rule for the registered library file.
</pre>
</li>
<li>
<strong><a href="https://gitlab.haskell.org/ghc/ghc/commit/35113117436c4936d97aae90693b93206d9ff213">35113117</a></strong>
<div>
<span>by Alp Mestanogullari</span>
<i>at 2019-06-13T06:50:37Z</i>
</div>
<pre class="commit-message" style="white-space: pre-wrap; margin: 0;">Hadrian: Do not allow the Linux jobs to fail anymore
MR !1151 makes the Hadrian/Linux job pass by fixing the last two test failures,
so we can now be stricter and not allow those jobs to fail anymore, easily
letting us see when patches introduce test failures.
</pre>
</li>
<li>
<strong><a href="https://gitlab.haskell.org/ghc/ghc/commit/70b5eefe09823f77bcfdd7b4fa8dbaee18ab316c">70b5eefe</a></strong>
<div>
<span>by Ben Gamari</span>
<i>at 2019-06-13T06:51:13Z</i>
</div>
<pre class="commit-message" style="white-space: pre-wrap; margin: 0;">users-guide: Fix a few markup issues
Strangely these were only causing the build to fail in the aarch64-linux
job, despite Sphinx throwing errors in all jobs I checked.
Also changes some `#ifdef`s to `#if defined` to satisfy the linter.
</pre>
</li>
<li>
<strong><a href="https://gitlab.haskell.org/ghc/ghc/commit/9721b40db9b87c0135613649f9f1e129eb49795b">9721b40d</a></strong>
<div>
<span>by Ben Gamari</span>
<i>at 2019-06-13T06:51:13Z</i>
</div>
<pre class="commit-message" style="white-space: pre-wrap; margin: 0;">gitlab-ci: Don't build PDF user's guide on AArch64
For reasons I don't understand sphinx seems to fail to produce a .idx
file for makeindex.
</pre>
</li>
<li>
<strong><a href="https://gitlab.haskell.org/ghc/ghc/commit/d550b771f6ebb91bfe860fc08811a7d74b39eb38">d550b771</a></strong>
<div>
<span>by Ben Gamari</span>
<i>at 2019-06-13T06:51:50Z</i>
</div>
<pre class="commit-message" style="white-space: pre-wrap; margin: 0;">Clean up .circleci
Move prepare-system.sh to .gitlab and remove everything else.
</pre>
</li>
<li>
<strong><a href="https://gitlab.haskell.org/ghc/ghc/commit/c53dfb3b2cddfe2d00d9017c9240042cc6bc7fcf">c53dfb3b</a></strong>
<div>
<span>by Ben Gamari</span>
<i>at 2019-06-13T15:52:47Z</i>
</div>
<pre class="commit-message" style="white-space: pre-wrap; margin: 0;">testsuite: A more portable solution to #9399
Previously we used an awful hybrid batch script/Bourne shell script to
allow this test to run both on Windows and Linux (fixing #9399).
However, this breaks on some libc implementations (e.g. musl). Fix this.
Fixes #16798.
</pre>
</li>
<li>
<strong><a href="https://gitlab.haskell.org/ghc/ghc/commit/74b5d0496f60b30c3fd4de2e7f8a96d1c481bdd6">74b5d049</a></strong>
<div>
<span>by Ben Gamari</span>
<i>at 2019-06-13T15:53:22Z</i>
</div>
<pre class="commit-message" style="white-space: pre-wrap; margin: 0;">gitlab-ci: Disable deb9-llvm job, introduce nightly LLVM job
This should help alleviate queue times as the LLVM job is one of the
longest that we have.
</pre>
</li>
<li>
<strong><a href="https://gitlab.haskell.org/ghc/ghc/commit/5ce63d52fed05371edb34b4f330c33bc85a45127">5ce63d52</a></strong>
<div>
<span>by Ben Gamari</span>
<i>at 2019-06-13T15:53:22Z</i>
</div>
<pre class="commit-message" style="white-space: pre-wrap; margin: 0;">gitlab-ci: Disable validate-x86_64-linux-deb9 job to reduce load
Enable artifacts on to ensure we have bindist coverage.
</pre>
</li>
<li>
<strong><a href="https://gitlab.haskell.org/ghc/ghc/commit/0bd3b9dd0428855b6f72f757c1214b5253aa7753">0bd3b9dd</a></strong>
<div>
<span>by Ben Gamari</span>
<i>at 2019-06-13T16:08:28Z</i>
</div>
<pre class="commit-message" style="white-space: pre-wrap; margin: 0;">PrelRules: Don't break let/app invariant in shiftRule
Previously shiftRule would rewrite as invalid shift like
```
let x = I# (uncheckedIShiftL# n 80)
in ...
```
to
```
let x = I# (error "invalid shift")
in ...
```
However, this breaks the let/app invariant as `error` is not
okay-for-speculation. There isn't an easy way to avoid this so let's not
try. Instead we just take advantage of the undefined nature of invalid
shifts and return zero.
Fixes #16742.
</pre>
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