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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/5946c85abcf66555cdbcd3eed02cb8f512b6110c">5946c85a</a></strong>
<div>
<span>by Ben Gamari</span>
<i>at 2020-04-23T11:40:38-04:00</i>
</div>
<pre class="commit-message" style="white-space: pre-wrap; margin: 0;">testsuite: Don't attempt to read .std{err,out} files if they don't exist

Simon reports that he was previously seeing framework failures due to
an attempt to read the non-existing T13456.stderr. While I don't know
exactly what this is due to, it does seem like a non-existing
.std{out,err} file should be equivalent to an empty file. Teach the
testsuite driver to treat it as such.
</pre>
</li>
</ul>
<h4>1 changed file:</h4>
<ul>
<li class="file-stats">
<a href="#c591f85f122007bac88228c5ff6fd76b40e6a811">
testsuite/driver/testlib.py
</a>
</li>
</ul>
<h4>Changes:</h4>
<li id="c591f85f122007bac88228c5ff6fd76b40e6a811">
<a href="https://gitlab.haskell.org/ghc/ghc/-/commit/5946c85abcf66555cdbcd3eed02cb8f512b6110c#c591f85f122007bac88228c5ff6fd76b40e6a811"><strong>testsuite/driver/testlib.py</strong></a>
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<td class="diff-line-num unfold js-unfold old_line" data-linenumber="1787" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">...</td>
<td class="diff-line-num unfold js-unfold new_line" data-linenumber="1787" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">...</td>
<td class="line_content match " style="padding-left: 0.5em; padding-right: 0.5em; color: rgba(0,0,0,0.3);" bgcolor="#fafafa">@@ -1787,7 +1787,11 @@ def stdout_ok(name: TestName, way: WayName) -> bool:</td>
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<pre style="margin: 0;"> <span id="LC1787" class="line" lang="python">                          <span class="n" style="color: #333;">expected_stdout_file</span><span class="p">,</span> <span class="n" style="color: #333;">actual_stdout_file</span><span class="p">)</span></span>
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<pre style="margin: 0;"> <span id="LC1788" class="line" lang="python"></span>
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<pre style="margin: 0;"> <span id="LC1789" class="line" lang="python"><span class="k" style="font-weight: 600;">def</span> <span class="nf" style="color: #900; font-weight: 600;">read_stdout</span><span class="p">(</span> <span class="n" style="color: #333;">name</span><span class="p">:</span> <span class="n" style="color: #333;">TestName</span> <span class="p">)</span> <span class="o" style="font-weight: 600;">-></span> <span class="nb" style="color: #0086b3;">str</span><span class="p">:</span></span>
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<td class="diff-line-num new_line old" data-linenumber="1790" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #fac5cd; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#f9d7dc">
 
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<pre style="margin: 0;">-<span id="LC1790" class="line" lang="python">    <span class="k" style="font-weight: 600;">return</span> <span class="n" style="color: #333;">in_testdir</span><span class="p">(</span><span class="n" style="color: #333;">name</span><span class="p">,</span> <span class="s" style="color: #d14;">'run.stdout'</span><span class="p">)</span><span class="o" style="font-weight: 600;">.</span><span class="n" style="color: #333;">read_text</span><span class="p">(</span><span class="n" style="color: #333;">encoding</span><span class="o" style="font-weight: 600;">=</span><span class="s" style="color: #d14;">'UTF-8'</span><span class="p">)</span></span>
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<pre style="margin: 0;">+<span id="LC1790" class="line" lang="python">    <span class="n" style="color: #333;">path</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">in_testdir</span><span class="p">(</span><span class="n" style="color: #333;">name</span><span class="p">,</span> <span class="s" style="color: #d14;">'run.stdout'</span><span class="p">)</span></span>
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<pre style="margin: 0;">+<span id="LC1791" class="line" lang="python">    <span class="k" style="font-weight: 600;">if</span> <span class="n" style="color: #333;">path</span><span class="o" style="font-weight: 600;">.</span><span class="n" style="color: #333;">exists</span><span class="p">():</span></span>
</pre>
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<pre style="margin: 0;">+<span id="LC1792" class="line" lang="python">        <span class="k" style="font-weight: 600;">return</span> <span class="n" style="color: #333;">path</span><span class="o" style="font-weight: 600;">.</span><span class="n" style="color: #333;">read_text</span><span class="p">(</span><span class="n" style="color: #333;">encoding</span><span class="o" style="font-weight: 600;">=</span><span class="s" style="color: #d14;">'UTF-8'</span><span class="p">)</span></span>
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<pre style="margin: 0;">+<span id="LC1793" class="line" lang="python">    <span class="k" style="font-weight: 600;">else</span><span class="p">:</span></span>
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<pre style="margin: 0;">+<span id="LC1794" class="line" lang="python">        <span class="k" style="font-weight: 600;">return</span> <span class="s" style="color: #d14;">''</span></span>
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<pre style="margin: 0;"> <span id="LC1795" class="line" lang="python"></span>
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<pre style="margin: 0;"> <span id="LC1796" class="line" lang="python"><span class="k" style="font-weight: 600;">def</span> <span class="nf" style="color: #900; font-weight: 600;">dump_stdout</span><span class="p">(</span> <span class="n" style="color: #333;">name</span><span class="p">:</span> <span class="n" style="color: #333;">TestName</span> <span class="p">)</span> <span class="o" style="font-weight: 600;">-></span> <span class="bp" style="color: #999;">None</span><span class="p">:</span></span>
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<pre style="margin: 0;"> <span id="LC1797" class="line" lang="python">    <span class="n" style="color: #333;">s</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">read_stdout</span><span class="p">(</span><span class="n" style="color: #333;">name</span><span class="p">)</span><span class="o" style="font-weight: 600;">.</span><span class="n" style="color: #333;">strip</span><span class="p">()</span></span>
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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">@@ -1805,7 +1809,11 @@ def stderr_ok(name: TestName, way: WayName) -> bool:</td>
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<pre style="margin: 0;"> <span id="LC1809" class="line" lang="python">                          <span class="n" style="color: #333;">whitespace_normaliser</span><span class="o" style="font-weight: 600;">=</span><span class="n" style="color: #333;">normalise_whitespace</span><span class="p">)</span></span>
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<pre style="margin: 0;"> <span id="LC1810" class="line" lang="python"></span>
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1807
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<td class="diff-line-num new_line" data-linenumber="1811" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">
1811
</td>
<td class="line_content" style="padding-left: 0.5em; padding-right: 0.5em;">
<pre style="margin: 0;"> <span id="LC1811" class="line" lang="python"><span class="k" style="font-weight: 600;">def</span> <span class="nf" style="color: #900; font-weight: 600;">read_stderr</span><span class="p">(</span> <span class="n" style="color: #333;">name</span><span class="p">:</span> <span class="n" style="color: #333;">TestName</span> <span class="p">)</span> <span class="o" style="font-weight: 600;">-></span> <span class="nb" style="color: #0086b3;">str</span><span class="p">:</span></span>
</pre>
</td>
</tr>
<tr class="line_holder old" id="" style="line-height: 1.6;">
<td class="diff-line-num old old_line" data-linenumber="1808" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #fac5cd; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#f9d7dc">
1808
</td>
<td class="diff-line-num new_line old" data-linenumber="1812" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #fac5cd; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#f9d7dc">
 
</td>
<td class="line_content old" style="padding-left: 0.5em; padding-right: 0.5em;" bgcolor="#fbe9eb">
<pre style="margin: 0;">-<span id="LC1808" class="line" lang="python">    <span class="k" style="font-weight: 600;">return</span> <span class="n" style="color: #333;">in_testdir</span><span class="p">(</span><span class="n" style="color: #333;">name</span><span class="p">,</span> <span class="s" style="color: #d14;">'run.stderr'</span><span class="p">)</span><span class="o" style="font-weight: 600;">.</span><span class="n" style="color: #333;">read_text</span><span class="p">(</span><span class="n" style="color: #333;">encoding</span><span class="o" style="font-weight: 600;">=</span><span class="s" style="color: #d14;">'UTF-8'</span><span class="p">)</span></span>
</pre>
</td>
</tr>
<tr class="line_holder new" id="" style="line-height: 1.6;">
<td class="diff-line-num new old_line" data-linenumber="1809" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">
 
</td>
<td class="diff-line-num new new_line" data-linenumber="1812" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">
1812
</td>
<td class="line_content new" style="padding-left: 0.5em; padding-right: 0.5em;" bgcolor="#ecfdf0">
<pre style="margin: 0;">+<span id="LC1812" class="line" lang="python">    <span class="n" style="color: #333;">path</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">in_testdir</span><span class="p">(</span><span class="n" style="color: #333;">name</span><span class="p">,</span> <span class="s" style="color: #d14;">'run.stderr'</span><span class="p">)</span></span>
</pre>
</td>
</tr>
<tr class="line_holder new" id="" style="line-height: 1.6;">
<td class="diff-line-num new old_line" data-linenumber="1809" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">
 
</td>
<td class="diff-line-num new new_line" data-linenumber="1813" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">
1813
</td>
<td class="line_content new" style="padding-left: 0.5em; padding-right: 0.5em;" bgcolor="#ecfdf0">
<pre style="margin: 0;">+<span id="LC1813" class="line" lang="python">    <span class="k" style="font-weight: 600;">if</span> <span class="n" style="color: #333;">path</span><span class="o" style="font-weight: 600;">.</span><span class="n" style="color: #333;">exists</span><span class="p">():</span></span>
</pre>
</td>
</tr>
<tr class="line_holder new" id="" style="line-height: 1.6;">
<td class="diff-line-num new old_line" data-linenumber="1809" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">
 
</td>
<td class="diff-line-num new new_line" data-linenumber="1814" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">
1814
</td>
<td class="line_content new" style="padding-left: 0.5em; padding-right: 0.5em;" bgcolor="#ecfdf0">
<pre style="margin: 0;">+<span id="LC1814" class="line" lang="python">        <span class="k" style="font-weight: 600;">return</span> <span class="n" style="color: #333;">path</span><span class="o" style="font-weight: 600;">.</span><span class="n" style="color: #333;">read_text</span><span class="p">(</span><span class="n" style="color: #333;">encoding</span><span class="o" style="font-weight: 600;">=</span><span class="s" style="color: #d14;">'UTF-8'</span><span class="p">)</span></span>
</pre>
</td>
</tr>
<tr class="line_holder new" id="" style="line-height: 1.6;">
<td class="diff-line-num new old_line" data-linenumber="1809" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">
 
</td>
<td class="diff-line-num new new_line" data-linenumber="1815" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">
1815
</td>
<td class="line_content new" style="padding-left: 0.5em; padding-right: 0.5em;" bgcolor="#ecfdf0">
<pre style="margin: 0;">+<span id="LC1815" class="line" lang="python">    <span class="k" style="font-weight: 600;">else</span><span class="p">:</span></span>
</pre>
</td>
</tr>
<tr class="line_holder new" id="" style="line-height: 1.6;">
<td class="diff-line-num new old_line" data-linenumber="1809" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">
 
</td>
<td class="diff-line-num new new_line" data-linenumber="1816" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">
1816
</td>
<td class="line_content new" style="padding-left: 0.5em; padding-right: 0.5em;" bgcolor="#ecfdf0">
<pre style="margin: 0;">+<span id="LC1816" class="line" lang="python">        <span class="k" style="font-weight: 600;">return</span> <span class="s" style="color: #d14;">''</span></span>
</pre>
</td>
</tr>
<tr class="line_holder" id="" style="line-height: 1.6;">
<td class="diff-line-num old_line" data-linenumber="1809" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">
1809
</td>
<td class="diff-line-num new_line" data-linenumber="1817" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">
1817
</td>
<td class="line_content" style="padding-left: 0.5em; padding-right: 0.5em;">
<pre style="margin: 0;"> <span id="LC1817" class="line" lang="python"></span>
</pre>
</td>
</tr>
<tr class="line_holder" id="" style="line-height: 1.6;">
<td class="diff-line-num old_line" data-linenumber="1810" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">
1810
</td>
<td class="diff-line-num new_line" data-linenumber="1818" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">
1818
</td>
<td class="line_content" style="padding-left: 0.5em; padding-right: 0.5em;">
<pre style="margin: 0;"> <span id="LC1818" class="line" lang="python"><span class="k" style="font-weight: 600;">def</span> <span class="nf" style="color: #900; font-weight: 600;">dump_stderr</span><span class="p">(</span> <span class="n" style="color: #333;">name</span><span class="p">:</span> <span class="n" style="color: #333;">TestName</span> <span class="p">)</span> <span class="o" style="font-weight: 600;">-></span> <span class="bp" style="color: #999;">None</span><span class="p">:</span></span>
</pre>
</td>
</tr>
<tr class="line_holder" id="" style="line-height: 1.6;">
<td class="diff-line-num old_line" data-linenumber="1811" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">
1811
</td>
<td class="diff-line-num new_line" data-linenumber="1819" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">
1819
</td>
<td class="line_content" style="padding-left: 0.5em; padding-right: 0.5em;">
<pre style="margin: 0;"> <span id="LC1819" class="line" lang="python">    <span class="n" style="color: #333;">s</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">read_stderr</span><span class="p">(</span><span class="n" style="color: #333;">name</span><span class="p">)</span><span class="o" style="font-weight: 600;">.</span><span class="n" style="color: #333;">strip</span><span class="p">()</span></span>
</pre>
</td>
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