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<h3>
Marge Bot pushed to branch master
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/2420c555e6cb681f4ef7c4ae3192a850ab431759">2420c555</a></strong>
<div>
<span>by Ryan Scott</span>
<i>at 2020-05-05T03:24:53-04:00</i>
</div>
<pre class="commit-message" style="white-space: pre-wrap; margin: 0;">Add regression tests for #16244, #16245, #16758
Commit e3c374cc5bd7eb49649b9f507f9f7740697e3f70 ended up
fixing quite a few bugs:
* This commit fixes #16244 completely. A regression test has been
added.
* This commit fixes one program from #16245. (The program in
https://gitlab.haskell.org/ghc/ghc/issues/16245#note_211369 still
panics, and the program in
https://gitlab.haskell.org/ghc/ghc/issues/16245#note_211400 still
loops infinitely.) A regression test has been added for this
program.
* This commit fixes #16758. Accordingly, this patch removes the
`expect_broken` label from the `T16758` test case, moves it from
`should_compile` to `should_fail` (as it should produce an error
message), and checks in the expected stderr.
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<h4>9 changed files:</h4>
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testsuite/tests/polykinds/T16244.hs
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testsuite/tests/polykinds/T16244.stderr
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testsuite/tests/polykinds/T16245.hs
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testsuite/tests/polykinds/T16245.stderr
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<li class="file-stats">
<a href="#37bb83d0a916288b2296ba25cdbbef228eed6484">
testsuite/tests/polykinds/all.T
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<li class="file-stats">
<a href="#abc046524442632fbe19ec7b03022953e85dad8e">
testsuite/tests/saks/should_compile/all.T
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<a href="#ea939c98d9406fd7369767e141117d94f55a777d">
testsuite/tests/saks/should_compile/T16758.hs
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testsuite/tests/saks/should_fail/T16758.hs
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testsuite/tests/saks/should_fail/T16758.stderr
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<a href="#65991711f90a1da50a63ac5fa76e420ef92b2a77">
testsuite/tests/saks/should_fail/all.T
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<h4>Changes:</h4>
<li id="6555aebd38aff55a0c2465b5549cb5ac7c84184e">
<a href="https://gitlab.haskell.org/ghc/ghc/-/commit/2420c555e6cb681f4ef7c4ae3192a850ab431759#6555aebd38aff55a0c2465b5549cb5ac7c84184e"><strong>testsuite/tests/polykinds/T16244.hs</strong></a>
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<pre style="margin: 0;">+<span id="LC1" class="line" lang="haskell"><span class="cp" style="color: #999; font-weight: 600;">{-# LANGUAGE ConstraintKinds #-}</span></span>
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<pre style="margin: 0;">+<span id="LC2" class="line" lang="haskell"><span class="cp" style="color: #999; font-weight: 600;">{-# LANGUAGE DataKinds #-}</span></span>
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<pre style="margin: 0;">+<span id="LC3" class="line" lang="haskell"><span class="cp" style="color: #999; font-weight: 600;">{-# LANGUAGE MultiParamTypeClasses #-}</span></span>
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<pre style="margin: 0;">+<span id="LC4" class="line" lang="haskell"><span class="cp" style="color: #999; font-weight: 600;">{-# LANGUAGE PolyKinds #-}</span></span>
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<pre style="margin: 0;">+<span id="LC5" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">module</span> <span class="nn" style="color: #555;">T16244</span> <span class="kr" style="font-weight: 600;">where</span></span>
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<pre style="margin: 0;">+<span id="LC6" class="line" lang="haskell"></span>
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<pre style="margin: 0;">+<span id="LC7" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">import</span> <span class="nn" style="color: #555;">Data.Kind</span></span>
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<pre style="margin: 0;">+<span id="LC8" class="line" lang="haskell"></span>
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<pre style="margin: 0;">+<span id="LC9" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">type</span> <span class="kt" style="color: #458; font-weight: 600;">Const</span> <span class="n" style="color: #333;">a</span> <span class="n" style="color: #333;">b</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">a</span></span>
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<pre style="margin: 0;">+<span id="LC10" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">type</span> <span class="kt" style="color: #458; font-weight: 600;">SameKind</span> <span class="p">(</span><span class="n" style="color: #333;">a</span> <span class="o" style="font-weight: 600;">::</span> <span class="n" style="color: #333;">k</span><span class="p">)</span> <span class="p">(</span><span class="n" style="color: #333;">b</span> <span class="o" style="font-weight: 600;">::</span> <span class="n" style="color: #333;">k</span><span class="p">)</span> <span class="o" style="font-weight: 600;">=</span> <span class="p">(</span><span class="nb" style="color: #0086b3;">()</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">Constraint</span><span class="p">)</span></span>
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<pre style="margin: 0;">+<span id="LC11" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">class</span> <span class="kt" style="color: #458; font-weight: 600;">SameKind</span> <span class="n" style="color: #333;">a</span> <span class="n" style="color: #333;">b</span> <span class="o" style="font-weight: 600;">=></span> <span class="kt" style="color: #458; font-weight: 600;">C</span> <span class="p">(</span><span class="n" style="color: #333;">k</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">Const</span> <span class="kt" style="color: #458; font-weight: 600;">Type</span> <span class="n" style="color: #333;">a</span><span class="p">)</span> <span class="p">(</span><span class="n" style="color: #333;">b</span> <span class="o" style="font-weight: 600;">::</span> <span class="n" style="color: #333;">k</span><span class="p">)</span></span></pre>
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<li id="a6d092704b41ff8df80b557ea834c14d1977fba7">
<a href="https://gitlab.haskell.org/ghc/ghc/-/commit/2420c555e6cb681f4ef7c4ae3192a850ab431759#a6d092704b41ff8df80b557ea834c14d1977fba7"><strong>testsuite/tests/polykinds/T16244.stderr</strong></a>
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<pre style="margin: 0;">+<span id="LC1" class="line" lang="plaintext"></span>
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<pre style="margin: 0;">+<span id="LC2" class="line" lang="plaintext">T16244.hs:11:18: error:</span>
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<pre style="margin: 0;">+<span id="LC3" class="line" lang="plaintext"> • Couldn't match kind ‘k1’ with ‘k’</span>
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<pre style="margin: 0;">+<span id="LC4" class="line" lang="plaintext"> ‘k1’ is a rigid type variable bound by</span>
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<pre style="margin: 0;">+<span id="LC5" class="line" lang="plaintext"> the class declaration for ‘C’</span>
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<pre style="margin: 0;">+<span id="LC6" class="line" lang="plaintext"> at T16244.hs:11:26</span>
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<pre style="margin: 0;">+<span id="LC7" class="line" lang="plaintext"> ‘k’ is a rigid type variable bound by</span>
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<pre style="margin: 0;">+<span id="LC8" class="line" lang="plaintext"> the class declaration for ‘C’</span>
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<pre style="margin: 0;">+<span id="LC9" class="line" lang="plaintext"> at T16244.hs:11:1-52</span>
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<pre style="margin: 0;">+<span id="LC10" class="line" lang="plaintext"> • In the second argument of ‘SameKind’, namely ‘b’</span>
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<pre style="margin: 0;">+<span id="LC11" class="line" lang="plaintext"> In the class declaration for ‘C’</span></pre>
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<a href="https://gitlab.haskell.org/ghc/ghc/-/commit/2420c555e6cb681f4ef7c4ae3192a850ab431759#d10e36bb93e2175d95f7104332d1ceb9d423c41a"><strong>testsuite/tests/polykinds/T16245.hs</strong></a>
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<pre style="margin: 0;">+<span id="LC1" class="line" lang="haskell"><span class="cp" style="color: #999; font-weight: 600;">{-# LANGUAGE ConstraintKinds #-}</span></span>
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<pre style="margin: 0;">+<span id="LC2" class="line" lang="haskell"><span class="cp" style="color: #999; font-weight: 600;">{-# LANGUAGE DataKinds #-}</span></span>
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<pre style="margin: 0;">+<span id="LC3" class="line" lang="haskell"><span class="cp" style="color: #999; font-weight: 600;">{-# LANGUAGE PolyKinds #-}</span></span>
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<pre style="margin: 0;">+<span id="LC4" class="line" lang="haskell"><span class="cp" style="color: #999; font-weight: 600;">{-# LANGUAGE QuantifiedConstraints #-}</span></span>
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<pre style="margin: 0;">+<span id="LC5" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">module</span> <span class="nn" style="color: #555;">T16245</span> <span class="kr" style="font-weight: 600;">where</span></span>
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<pre style="margin: 0;">+<span id="LC6" class="line" lang="haskell"></span>
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<pre style="margin: 0;">+<span id="LC7" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">import</span> <span class="nn" style="color: #555;">Data.Kind</span></span>
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<pre style="margin: 0;">+<span id="LC8" class="line" lang="haskell"></span>
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<pre style="margin: 0;">+<span id="LC9" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">type</span> <span class="kt" style="color: #458; font-weight: 600;">Const</span> <span class="n" style="color: #333;">a</span> <span class="n" style="color: #333;">b</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">a</span></span>
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<pre style="margin: 0;">+<span id="LC10" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">type</span> <span class="kt" style="color: #458; font-weight: 600;">SameKind</span> <span class="p">(</span><span class="n" style="color: #333;">a</span> <span class="o" style="font-weight: 600;">::</span> <span class="n" style="color: #333;">k</span><span class="p">)</span> <span class="p">(</span><span class="n" style="color: #333;">b</span> <span class="o" style="font-weight: 600;">::</span> <span class="n" style="color: #333;">k</span><span class="p">)</span> <span class="o" style="font-weight: 600;">=</span> <span class="p">(</span><span class="nb" style="color: #0086b3;">()</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">Constraint</span><span class="p">)</span></span>
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<pre style="margin: 0;">+<span id="LC11" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">class</span> <span class="p">(</span><span class="n" style="color: #333;">forall</span> <span class="p">(</span><span class="n" style="color: #333;">b</span> <span class="o" style="font-weight: 600;">::</span> <span class="n" style="color: #333;">k</span><span class="p">)</span><span class="o" style="font-weight: 600;">.</span> <span class="kt" style="color: #458; font-weight: 600;">SameKind</span> <span class="n" style="color: #333;">a</span> <span class="n" style="color: #333;">b</span><span class="p">)</span> <span class="o" style="font-weight: 600;">=></span> <span class="kt" style="color: #458; font-weight: 600;">C</span> <span class="p">(</span><span class="n" style="color: #333;">k</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">Const</span> <span class="kt" style="color: #458; font-weight: 600;">Type</span> <span class="n" style="color: #333;">a</span><span class="p">)</span></span></pre>
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<a href="https://gitlab.haskell.org/ghc/ghc/-/commit/2420c555e6cb681f4ef7c4ae3192a850ab431759#2494151052387a73b9b8f48e3794f3d140450c78"><strong>testsuite/tests/polykinds/T16245.stderr</strong></a>
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<pre style="margin: 0;">+<span id="LC2" class="line" lang="plaintext">T16245.hs:11:36: error:</span>
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<pre style="margin: 0;">+<span id="LC3" class="line" lang="plaintext"> • Couldn't match kind ‘k1’ with ‘k’</span>
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<pre style="margin: 0;">+<span id="LC4" class="line" lang="plaintext"> ‘k1’ is a rigid type variable bound by</span>
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<pre style="margin: 0;">+<span id="LC5" class="line" lang="plaintext"> the class declaration for ‘C’</span>
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<pre style="margin: 0;">+<span id="LC6" class="line" lang="plaintext"> at T16245.hs:11:45</span>
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<pre style="margin: 0;">+<span id="LC7" class="line" lang="plaintext"> ‘k’ is a rigid type variable bound by</span>
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<pre style="margin: 0;">+<span id="LC8" class="line" lang="plaintext"> the class declaration for ‘C’</span>
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<pre style="margin: 0;">+<span id="LC9" class="line" lang="plaintext"> at T16245.hs:11:1-62</span>
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<pre style="margin: 0;">+<span id="LC10" class="line" lang="plaintext"> • In the second argument of ‘SameKind’, namely ‘b’</span>
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<pre style="margin: 0;">+<span id="LC11" class="line" lang="plaintext"> In the class declaration for ‘C’</span></pre>
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<a href="https://gitlab.haskell.org/ghc/ghc/-/commit/2420c555e6cb681f4ef7c4ae3192a850ab431759#37bb83d0a916288b2296ba25cdbbef228eed6484"><strong>testsuite/tests/polykinds/all.T</strong></a>
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<td class="line_content match " style="padding-left: 0.5em; padding-right: 0.5em; color: rgba(0,0,0,0.3);" bgcolor="#fafafa">@@ -211,6 +211,8 @@ test('T16247a', normal, compile_fail, [''])</td>
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<pre style="margin: 0;"> <span id="LC211" class="line" lang="perl"><span class="nv" style="color: #008080;">test</span><span class="p">('</span><span class="s1" style="color: #d14;">KindVarOrder</span><span class="p">',</span> <span class="nv" style="color: #008080;">normal</span><span class="p">,</span> <span class="nv" style="color: #008080;">ghci_script</span><span class="p">,</span> <span class="p">['</span><span class="s1" style="color: #d14;">KindVarOrder.script</span><span class="p">'])</span></span>
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212
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212
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<pre style="margin: 0;"> <span id="LC212" class="line" lang="perl"><span class="nv" style="color: #008080;">test</span><span class="p">('</span><span class="s1" style="color: #d14;">T16221</span><span class="p">',</span> <span class="nv" style="color: #008080;">normal</span><span class="p">,</span> <span class="nv" style="color: #008080;">compile</span><span class="p">,</span> <span class="p">[''])</span></span>
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213
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213
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<pre style="margin: 0;"> <span id="LC213" class="line" lang="perl"><span class="nv" style="color: #008080;">test</span><span class="p">('</span><span class="s1" style="color: #d14;">T16221a</span><span class="p">',</span> <span class="nv" style="color: #008080;">normal</span><span class="p">,</span> <span class="nv" style="color: #008080;">compile_fail</span><span class="p">,</span> <span class="p">[''])</span></span>
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214
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<pre style="margin: 0;">+<span id="LC214" class="line" lang="perl"><span class="nv" style="color: #008080;">test</span><span class="p">('</span><span class="s1" style="color: #d14;">T16244</span><span class="p">',</span> <span class="nv" style="color: #008080;">normal</span><span class="p">,</span> <span class="nv" style="color: #008080;">compile_fail</span><span class="p">,</span> <span class="p">[''])</span></span>
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215
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<pre style="margin: 0;">+<span id="LC215" class="line" lang="perl"><span class="nv" style="color: #008080;">test</span><span class="p">('</span><span class="s1" style="color: #d14;">T16245</span><span class="p">',</span> <span class="nv" style="color: #008080;">normal</span><span class="p">,</span> <span class="nv" style="color: #008080;">compile_fail</span><span class="p">,</span> <span class="p">[''])</span></span>
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214
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216
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<pre style="margin: 0;"> <span id="LC216" class="line" lang="perl"><span class="nv" style="color: #008080;">test</span><span class="p">('</span><span class="s1" style="color: #d14;">T16342</span><span class="p">',</span> <span class="nv" style="color: #008080;">normal</span><span class="p">,</span> <span class="nv" style="color: #008080;">compile</span><span class="p">,</span> <span class="p">[''])</span></span>
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215
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217
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<pre style="margin: 0;"> <span id="LC217" class="line" lang="perl"><span class="nv" style="color: #008080;">test</span><span class="p">('</span><span class="s1" style="color: #d14;">T16263</span><span class="p">',</span> <span class="nv" style="color: #008080;">normal</span><span class="p">,</span> <span class="nv" style="color: #008080;">compile_fail</span><span class="p">,</span> <span class="p">[''])</span></span>
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216
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218
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<pre style="margin: 0;"> <span id="LC218" class="line" lang="perl"><span class="nv" style="color: #008080;">test</span><span class="p">('</span><span class="s1" style="color: #d14;">T16902</span><span class="p">',</span> <span class="nv" style="color: #008080;">normal</span><span class="p">,</span> <span class="nv" style="color: #008080;">compile_fail</span><span class="p">,</span> <span class="p">[''])</span></span>
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<a href="https://gitlab.haskell.org/ghc/ghc/-/commit/2420c555e6cb681f4ef7c4ae3192a850ab431759#abc046524442632fbe19ec7b03022953e85dad8e"><strong>testsuite/tests/saks/should_compile/all.T</strong></a>
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<td class="line_content match " style="padding-left: 0.5em; padding-right: 0.5em; color: rgba(0,0,0,0.3);" bgcolor="#fafafa">@@ -34,7 +34,6 @@ test('T16723', normal, compile, [''])</td>
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34
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<pre style="margin: 0;"> <span id="LC34" class="line" lang="perl"><span class="nv" style="color: #008080;">test</span><span class="p">('</span><span class="s1" style="color: #d14;">T16724</span><span class="p">',</span> <span class="nv" style="color: #008080;">extra_files</span><span class="p">(['</span><span class="s1" style="color: #d14;">T16724.hs</span><span class="p">']),</span> <span class="nv" style="color: #008080;">ghci_script</span><span class="p">,</span> <span class="p">['</span><span class="s1" style="color: #d14;">T16724.script</span><span class="p">'])</span></span>
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35
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35
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<pre style="margin: 0;"> <span id="LC35" class="line" lang="perl"><span class="nv" style="color: #008080;">test</span><span class="p">('</span><span class="s1" style="color: #d14;">T16726</span><span class="p">',</span> <span class="nv" style="color: #008080;">normal</span><span class="p">,</span> <span class="nv" style="color: #008080;">compile</span><span class="p">,</span> <span class="p">[''])</span></span>
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36
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36
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<pre style="margin: 0;"> <span id="LC36" class="line" lang="perl"><span class="nv" style="color: #008080;">test</span><span class="p">('</span><span class="s1" style="color: #d14;">T16731</span><span class="p">',</span> <span class="nv" style="color: #008080;">normal</span><span class="p">,</span> <span class="nv" style="color: #008080;">compile</span><span class="p">,</span> <span class="p">[''])</span></span>
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37
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<pre style="margin: 0;">-<span id="LC37" class="line" lang="perl"><span class="nv" style="color: #008080;">test</span><span class="p">('</span><span class="s1" style="color: #d14;">T16758</span><span class="p">',</span> <span class="nv" style="color: #008080;">expect_broken</span><span class="p">(</span><span class="mi" style="color: #099;">16758</span><span class="p">),</span> <span class="nv" style="color: #008080;">compile</span><span class="p">,</span> <span class="p">[''])</span></span>
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37
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<pre style="margin: 0;"> <span id="LC37" class="line" lang="perl"><span class="nv" style="color: #008080;">test</span><span class="p">('</span><span class="s1" style="color: #d14;">T16721</span><span class="p">',</span> <span class="nv" style="color: #008080;">normal</span><span class="p">,</span> <span class="nv" style="color: #008080;">ghci_script</span><span class="p">,</span> <span class="p">['</span><span class="s1" style="color: #d14;">T16721.script</span><span class="p">'])</span></span>
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39
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<pre style="margin: 0;"> <span id="LC38" class="line" lang="perl"><span class="nv" style="color: #008080;">test</span><span class="p">('</span><span class="s1" style="color: #d14;">T16756a</span><span class="p">',</span> <span class="nv" style="color: #008080;">normal</span><span class="p">,</span> <span class="nv" style="color: #008080;">compile</span><span class="p">,</span> <span class="p">[''])</span></span>
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<pre style="margin: 0;"> <span id="LC39" class="line" lang="perl"></span>
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<strong>testsuite/tests/saks/should_fail/T16758.hs</strong>
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<pre style="margin: 0;">+<span id="LC1" class="line" lang="plaintext"></span>
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<pre style="margin: 0;">+<span id="LC2" class="line" lang="plaintext">T16758.hs:14:8: error:</span>
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<pre style="margin: 0;">+<span id="LC3" class="line" lang="plaintext"> • Couldn't match expected kind ‘Int’ with actual kind ‘a’</span>
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<pre style="margin: 0;">+<span id="LC4" class="line" lang="plaintext"> ‘a’ is a rigid type variable bound by</span>
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<pre style="margin: 0;">+<span id="LC5" class="line" lang="plaintext"> the class declaration for ‘C’</span>
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<pre style="margin: 0;">+<span id="LC6" class="line" lang="plaintext"> at T16758.hs:12:19</span>
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<pre style="margin: 0;">+<span id="LC7" class="line" lang="plaintext"> • In the type signature: f :: C a => a -> Int</span>
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<pre style="margin: 0;">+<span id="LC8" class="line" lang="plaintext"> In the class declaration for ‘C’</span></pre>
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<a href="https://gitlab.haskell.org/ghc/ghc/-/commit/2420c555e6cb681f4ef7c4ae3192a850ab431759#65991711f90a1da50a63ac5fa76e420ef92b2a77"><strong>testsuite/tests/saks/should_fail/all.T</strong></a>
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<td class="line_content match " style="padding-left: 0.5em; padding-right: 0.5em; color: rgba(0,0,0,0.3);" bgcolor="#fafafa">@@ -30,3 +30,4 @@ test('T16727b', normal, compile_fail, [''])</td>
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<pre style="margin: 0;"> <span id="LC30" class="line" lang="perl"><span class="nv" style="color: #008080;">test</span><span class="p">('</span><span class="s1" style="color: #d14;">T16725</span><span class="p">',</span> <span class="nv" style="color: #008080;">normal</span><span class="p">,</span> <span class="nv" style="color: #008080;">compile_fail</span><span class="p">,</span> <span class="p">[''])</span></span>
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31
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<pre style="margin: 0;"> <span id="LC31" class="line" lang="perl"><span class="nv" style="color: #008080;">test</span><span class="p">('</span><span class="s1" style="color: #d14;">T16826</span><span class="p">',</span> <span class="nv" style="color: #008080;">normal</span><span class="p">,</span> <span class="nv" style="color: #008080;">compile_fail</span><span class="p">,</span> <span class="p">[''])</span></span>
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32
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<pre style="margin: 0;"> <span id="LC32" class="line" lang="perl"><span class="nv" style="color: #008080;">test</span><span class="p">('</span><span class="s1" style="color: #d14;">T16756b</span><span class="p">',</span> <span class="nv" style="color: #008080;">normal</span><span class="p">,</span> <span class="nv" style="color: #008080;">compile_fail</span><span class="p">,</span> <span class="p">[''])</span></span>
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<pre style="margin: 0;">+<span id="LC33" class="line" lang="perl"><span class="nv" style="color: #008080;">test</span><span class="p">('</span><span class="s1" style="color: #d14;">T16758</span><span class="p">',</span> <span class="nv" style="color: #008080;">normal</span><span class="p">,</span> <span class="nv" style="color: #008080;">compile_fail</span><span class="p">,</span> <span class="p">[''])</span></span></pre>
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