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<h3>
Andreas Klebinger pushed to branch wip/andreask/callstack-prelude
at <a href="https://gitlab.haskell.org/ghc/ghc">Glasgow Haskell Compiler / GHC</a>
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<h4>
Commits:
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<strong><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/85f6487ff04e857acd333d176f33e9c26e0256cd">85f6487f</a></strong>
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<span>by Andreas Klebinger</span>
<i>at 2020-05-26T14:30:57+02:00</i>
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<pre class="commit-message" style="white-space: pre-wrap; margin: 0;">Make use of DebugCallStack for plain panic.
Also move HasDebugCallStack into GHC.Prelude.
This allows it to be used without indirectly depending on
the Outputable module.
</pre>
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<h4>4 changed files:</h4>
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<li class="file-stats">
<a href="#41edd2efd0bae607c344b2c9f880d9a19f811ca5">
compiler/GHC/Prelude.hs
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<li class="file-stats">
<a href="#f021c52a6ccf306e88c9f760b2aee33b180ba341">
compiler/GHC/Tc/Utils/Env.hs
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<li class="file-stats">
<a href="#4d45cd1896284e4b4034580e431af68b09013b33">
compiler/GHC/Utils/Misc.hs
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<li class="file-stats">
<a href="#24c58f4447a259104c534fcb40cce7e31fb8df08">
compiler/GHC/Utils/Panic/Plain.hs
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<h4>Changes:</h4>
<li id="41edd2efd0bae607c344b2c9f880d9a19f811ca5">
<a href="https://gitlab.haskell.org/ghc/ghc/-/commit/85f6487ff04e857acd333d176f33e9c26e0256cd#41edd2efd0bae607c344b2c9f880d9a19f811ca5"><strong>compiler/GHC/Prelude.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 CPP #-}</span></span>
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<pre style="margin: 0;">-<span id="LC2" class="line" lang="haskell"></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 KindSignatures #-}</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 ConstraintKinds #-}</span></span>
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<pre style="margin: 0;"> <span id="LC4" class="line" lang="haskell"><span class="cd">-- | Custom GHC "Prelude"</span></span>
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<pre style="margin: 0;"> <span id="LC5" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">--</span></span>
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<pre style="margin: 0;"> <span id="LC6" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- This module serves as a replacement for the "Prelude" module</span></span>
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<td class="diff-line-num unfold js-unfold new_line" data-linenumber="11" 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">@@ -10,7 +11,7 @@</td>
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<pre style="margin: 0;"> <span id="LC11" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- * Is compiled with -XNoImplicitPrelude</span></span>
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<pre style="margin: 0;"> <span id="LC12" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- * Explicitly imports GHC.Prelude</span></span>
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<pre style="margin: 0;"> <span id="LC13" class="line" lang="haskell"></span>
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<pre style="margin: 0;">-<span id="LC13" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">module</span> <span class="nn" style="color: #555;">GHC.Prelude</span> <span class="p">(</span><span class="nf" style="color: #900; font-weight: 600;">module</span> <span class="kt" style="color: #458; font-weight: 600;">X</span><span class="p">)</span> <span class="kr" style="font-weight: 600;">where</span></span>
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<pre style="margin: 0;">+<span id="LC14" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">module</span> <span class="nn" style="color: #555;">GHC.Prelude</span> <span class="p">(</span><span class="nf" style="color: #900; font-weight: 600;">module</span> <span class="kt" style="color: #458; font-weight: 600;">X</span><span class="p"><span class="idiff left">,</span></span><span class="idiff"> </span><span class="kt" style="color: #458; font-weight: 600;"><span class="idiff right">HasDebugCallStack</span></span><span class="p">)</span> <span class="kr" style="font-weight: 600;">where</span></span>
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<pre style="margin: 0;"> <span id="LC15" class="line" lang="haskell"></span>
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<pre style="margin: 0;"> <span id="LC16" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- We export the 'Semigroup' class but w/o the (<>) operator to avoid</span></span>
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<pre style="margin: 0;"> <span id="LC17" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- clashing with the (Outputable.<>) operator which is heavily used</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">@@ -19,6 +20,19 @@ module GHC.Prelude (module X) where</td>
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<pre style="margin: 0;"> <span id="LC20" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">import</span> <span class="nn" style="color: #555;">Prelude</span> <span class="k" style="font-weight: 600;">as</span> <span class="n" style="color: #333;">X</span> <span class="n" style="color: #333;">hiding</span> <span class="p">((</span><span class="o" style="font-weight: 600;"><></span><span class="p">))</span></span>
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<pre style="margin: 0;"> <span id="LC21" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">import</span> <span class="nn" style="color: #555;">Data.Foldable</span> <span class="k" style="font-weight: 600;">as</span> <span class="n" style="color: #333;">X</span> <span class="p">(</span><span class="n" style="color: #333;">foldl'</span><span class="p">)</span></span>
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<pre style="margin: 0;"> <span id="LC22" class="line" lang="haskell"></span>
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<pre style="margin: 0;">+<span id="LC23" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">import</span> <span class="nn" style="color: #555;">GHC.Exts</span> <span class="p">(</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="LC24" class="line" lang="haskell"><span class="o" style="font-weight: 600;">#</span><span class="kr" style="font-weight: 600;">if</span> <span class="n" style="color: #333;">defined</span><span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">DEBUG</span><span class="p">)</span></span>
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<pre style="margin: 0;">+<span id="LC25" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">import</span> <span class="nn" style="color: #555;">GHC.Stack</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">HasCallStack</span><span class="p">)</span></span>
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<pre style="margin: 0;">+<span id="LC26" class="line" lang="haskell"><span class="o" style="font-weight: 600;">#</span><span class="n" style="color: #333;">endif</span></span>
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<pre style="margin: 0;">+<span id="LC27" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- We define</span></span>
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<pre style="margin: 0;">+<span id="LC28" class="line" lang="haskell"></span>
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<pre style="margin: 0;">+<span id="LC29" class="line" lang="haskell"><span class="cd">-- | A call stack constraint, but only when 'isDebugOn'.</span></span>
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<pre style="margin: 0;">+<span id="LC30" class="line" lang="haskell"><span class="o" style="font-weight: 600;">#</span><span class="kr" style="font-weight: 600;">if</span> <span class="n" style="color: #333;">defined</span><span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">DEBUG</span><span class="p">)</span></span>
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<pre style="margin: 0;">+<span id="LC31" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">type</span> <span class="kt" style="color: #458; font-weight: 600;">HasDebugCallStack</span> <span class="o" style="font-weight: 600;">=</span> <span class="kt" style="color: #458; font-weight: 600;">HasCallStack</span></span>
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<pre style="margin: 0;">+<span id="LC32" class="line" lang="haskell"><span class="o" style="font-weight: 600;">#</span><span class="kr" style="font-weight: 600;">else</span></span>
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<pre style="margin: 0;">+<span id="LC33" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">type</span> <span class="kt" style="color: #458; font-weight: 600;">HasDebugCallStack</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="LC34" class="line" lang="haskell"><span class="o" style="font-weight: 600;">#</span><span class="n" style="color: #333;">endif</span></span>
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<pre style="margin: 0;">+<span id="LC35" class="line" lang="haskell"></span>
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<pre style="margin: 0;"> <span id="LC36" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;">{-</span></span>
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<pre style="margin: 0;"> <span id="LC37" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;">Note [Why do we import Prelude here?]</span></span>
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<pre style="margin: 0;"> <span id="LC38" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;">~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~</span></span>
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<li id="f021c52a6ccf306e88c9f760b2aee33b180ba341">
<a href="https://gitlab.haskell.org/ghc/ghc/-/commit/85f6487ff04e857acd333d176f33e9c26e0256cd#f021c52a6ccf306e88c9f760b2aee33b180ba341"><strong>compiler/GHC/Tc/Utils/Env.hs</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">@@ -109,7 +109,6 @@ import GHC.Data.List.SetOps</td>
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<pre style="margin: 0;"> <span id="LC109" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">import</span> <span class="nn" style="color: #555;">GHC.Utils.Error</span></span>
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<pre style="margin: 0;"> <span id="LC110" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">import</span> <span class="nn" style="color: #555;">GHC.Data.Maybe</span><span class="p">(</span> <span class="kt" style="color: #458; font-weight: 600;">MaybeErr</span><span class="p">(</span><span class="o" style="font-weight: 600;">..</span><span class="p">),</span> <span class="n" style="color: #333;">orElse</span> <span class="p">)</span></span>
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<pre style="margin: 0;"> <span id="LC111" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">import</span> <span class="k" style="font-weight: 600;">qualified</span> <span class="nn" style="color: #555;">GHC.LanguageExtensions</span> <span class="k" style="font-weight: 600;">as</span> <span class="n" style="color: #333;">LangExt</span></span>
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<pre style="margin: 0;">-<span id="LC112" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">import</span> <span class="nn" style="color: #555;">GHC.Utils.Misc</span> <span class="p">(</span> <span class="kt" style="color: #458; font-weight: 600;">HasDebugCallStack</span> <span class="p">)</span></span>
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<pre style="margin: 0;"> <span id="LC112" class="line" lang="haskell"></span>
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<pre style="margin: 0;"> <span id="LC113" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">import</span> <span class="nn" style="color: #555;">Data.IORef</span></span>
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<pre style="margin: 0;"> <span id="LC114" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">import</span> <span class="nn" style="color: #555;">Data.List</span> <span class="p">(</span><span class="nf" style="color: #900; font-weight: 600;">intercalate</span><span class="p">)</span></span>
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<a href="https://gitlab.haskell.org/ghc/ghc/-/commit/85f6487ff04e857acd333d176f33e9c26e0256cd#4d45cd1896284e4b4034580e431af68b09013b33"><strong>compiler/GHC/Utils/Misc.hs</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">@@ -1440,13 +1440,6 @@ mulHi a b = fromIntegral (r `shiftR` 32)</td>
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<pre style="margin: 0;"> <span id="LC1440" class="line" lang="haskell"> <span class="kr" style="font-weight: 600;">where</span> <span class="n" style="color: #333;">r</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">Int64</span></span>
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<pre style="margin: 0;"> <span id="LC1441" class="line" lang="haskell"> <span class="n" style="color: #333;">r</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">fromIntegral</span> <span class="n" style="color: #333;">a</span> <span class="o" style="font-weight: 600;">*</span> <span class="n" style="color: #333;">fromIntegral</span> <span class="n" style="color: #333;">b</span></span>
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1442
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<pre style="margin: 0;"> <span id="LC1442" class="line" lang="haskell"></span>
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<pre style="margin: 0;">-<span id="LC1443" class="line" lang="haskell"><span class="cd">-- | A call stack constraint, but only when 'isDebugOn'.</span></span>
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<pre style="margin: 0;">-<span id="LC1444" class="line" lang="haskell"><span class="o" style="font-weight: 600;">#</span><span class="kr" style="font-weight: 600;">if</span> <span class="n" style="color: #333;">defined</span><span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">DEBUG</span><span class="p">)</span></span>
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<pre style="margin: 0;">-<span id="LC1445" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">type</span> <span class="kt" style="color: #458; font-weight: 600;">HasDebugCallStack</span> <span class="o" style="font-weight: 600;">=</span> <span class="kt" style="color: #458; font-weight: 600;">HasCallStack</span></span>
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<pre style="margin: 0;">-<span id="LC1446" class="line" lang="haskell"><span class="o" style="font-weight: 600;">#</span><span class="kr" style="font-weight: 600;">else</span></span>
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<pre style="margin: 0;">-<span id="LC1447" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">type</span> <span class="kt" style="color: #458; font-weight: 600;">HasDebugCallStack</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="LC1448" class="line" lang="haskell"><span class="o" style="font-weight: 600;">#</span><span class="n" style="color: #333;">endif</span></span>
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<pre style="margin: 0;">-<span id="LC1449" class="line" lang="haskell"></span>
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<pre style="margin: 0;"> <span id="LC1443" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">data</span> <span class="kt" style="color: #458; font-weight: 600;">OverridingBool</span></span>
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<pre style="margin: 0;"> <span id="LC1444" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">=</span> <span class="kt" style="color: #458; font-weight: 600;">Auto</span></span>
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<pre style="margin: 0;"> <span id="LC1445" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">|</span> <span class="kt" style="color: #458; font-weight: 600;">Always</span></span>
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<a href="https://gitlab.haskell.org/ghc/ghc/-/commit/85f6487ff04e857acd333d176f33e9c26e0256cd#24c58f4447a259104c534fcb40cce7e31fb8df08"><strong>compiler/GHC/Utils/Panic/Plain.hs</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">@@ -111,15 +111,15 @@ throwPlainGhcException :: PlainGhcException -> a</td>
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<pre style="margin: 0;"> <span id="LC111" class="line" lang="haskell"><span class="n" style="color: #333;">throwPlainGhcException</span> <span class="o" style="font-weight: 600;">=</span> <span class="kt" style="color: #458; font-weight: 600;">Exception</span><span class="o" style="font-weight: 600;">.</span><span class="n" style="color: #333;">throw</span></span>
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<pre style="margin: 0;"> <span id="LC112" class="line" lang="haskell"></span>
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<pre style="margin: 0;"> <span id="LC113" class="line" lang="haskell"><span class="cd">-- | Panics and asserts.</span></span>
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<pre style="margin: 0;">-<span id="LC114" class="line" lang="haskell"><span class="n" style="color: #333;">panic</span><span class="p">,</span> <span class="n" style="color: #333;">sorry</span><span class="p">,</span> <span class="n" style="color: #333;">pgmError</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">String</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="LC114" class="line" lang="haskell"><span class="n" style="color: #333;">panic</span><span class="p">,</span> <span class="n" style="color: #333;">sorry</span><span class="p">,</span> <span class="n" style="color: #333;">pgmError</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;"><span class="idiff left">HasCallStack</span></span><span class="idiff"> </span><span class="o" style="font-weight: 600;"><span class="idiff">=></span></span><span class="idiff right"> </span><span class="kt" style="color: #458; font-weight: 600;">String</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="LC115" class="line" lang="haskell"><span class="n" style="color: #333;">panic</span> <span class="n" style="color: #333;">x</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">unsafeDupablePerformIO</span> <span class="o" style="font-weight: 600;">$</span> <span class="kr" style="font-weight: 600;">do</span></span>
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<pre style="margin: 0;"> <span id="LC116" class="line" lang="haskell"> <span class="n" style="color: #333;">stack</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">ccsToStrings</span> <span class="o" style="font-weight: 600;">=<<</span> <span class="n" style="color: #333;">getCurrentCCS</span> <span class="n" style="color: #333;">x</span></span>
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<pre style="margin: 0;"> <span id="LC117" class="line" lang="haskell"> <span class="kr" style="font-weight: 600;">if</span> <span class="n" style="color: #333;">null</span> <span class="n" style="color: #333;">stack</span></span>
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<pre style="margin: 0;">-<span id="LC118" class="line" lang="haskell"> <span class="kr" style="font-weight: 600;">then</span> <span class="n" style="color: #333;">throwPlainGhcException</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">PlainPanic</span> <span class="n" style="color: #333;"><span class="idiff left right">x</span></span><span class="p">)</span></span>
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119
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<pre style="margin: 0;">-<span id="LC119" class="line" lang="haskell"> <span class="kr" style="font-weight: 600;">else</span> <span class="n" style="color: #333;">throwPlainGhcException</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">PlainPanic</span> <span class="p">(</span><span class="n" style="color: #333;">x</span> <span class="o" style="font-weight: 600;">++</span> <span class="sc" style="color: #d14;">'</span><span class="se" style="color: #d14;">\n</span><span class="sc" style="color: #d14;">'</span> <span class="o" style="font-weight: 600;">:</span> <span class="n" style="color: #333;">renderStack</span> <span class="n" style="color: #333;">stack</span><span class="p">))</span></span>
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<pre style="margin: 0;">+<span id="LC118" class="line" lang="haskell"> <span class="kr" style="font-weight: 600;">then</span> <span class="n" style="color: #333;">throwPlainGhcException</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">PlainPanic</span> <span class="p"><span class="idiff left">((</span></span><span class="n" style="color: #333;"><span class="idiff">prettyCallStack</span></span><span class="idiff"> </span><span class="n" style="color: #333;"><span class="idiff">callStack</span></span><span class="p"><span class="idiff">)</span></span><span class="idiff"> </span><span class="o" style="font-weight: 600;"><span class="idiff">++</span></span><span class="idiff"> </span><span class="s" style="color: #d14;"><span class="idiff">"</span></span><span class="se" style="color: #d14;"><span class="idiff">\n</span></span><span class="s" style="color: #d14;"><span class="idiff">"</span></span><span class="idiff"> </span><span class="o" style="font-weight: 600;"><span class="idiff">++</span></span><span class="idiff"> </span><span class="n" style="color: #333;"><span class="idiff">x</span></span><span class="p"><span class="idiff right">)</span>)</span></span>
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<pre style="margin: 0;">+<span id="LC119" class="line" lang="haskell"> <span class="kr" style="font-weight: 600;">else</span> <span class="n" style="color: #333;">throwPlainGhcException</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">PlainPanic</span> <span class="p">(<span class="idiff left">(</span></span><span class="n" style="color: #333;"><span class="idiff">prettyCallStack</span></span><span class="idiff"> </span><span class="n" style="color: #333;"><span class="idiff">callStack</span></span><span class="p"><span class="idiff">)</span></span><span class="idiff"> </span><span class="o" style="font-weight: 600;"><span class="idiff">++</span></span><span class="idiff"> </span><span class="s" style="color: #d14;"><span class="idiff">"</span></span><span class="se" style="color: #d14;"><span class="idiff">\n</span></span><span class="s" style="color: #d14;"><span class="idiff">"</span></span><span class="idiff"> </span><span class="o" style="font-weight: 600;"><span class="idiff">++</span></span><span class="idiff right"> </span><span class="n" style="color: #333;">x</span> <span class="o" style="font-weight: 600;">++</span> <span class="sc" style="color: #d14;">'</span><span class="se" style="color: #d14;">\n</span><span class="sc" style="color: #d14;">'</span> <span class="o" style="font-weight: 600;">:</span> <span class="n" style="color: #333;">renderStack</span> <span class="n" style="color: #333;">stack</span><span class="p">))</span></span>
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<pre style="margin: 0;"> <span id="LC120" class="line" lang="haskell"></span>
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<pre style="margin: 0;">-<span id="LC121" class="line" lang="haskell"><span class="n" style="color: #333;">sorry</span> <span class="n" style="color: #333;">x</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">throwPlainGhcException</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">PlainSorry</span> <span class="n" style="color: #333;">x</span><span class="p">)</span></span>
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<pre style="margin: 0;">-<span id="LC122" class="line" lang="haskell"><span class="n" style="color: #333;">pgmError</span> <span class="n" style="color: #333;">x</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">throwPlainGhcException</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">PlainProgramError</span> <span class="n" style="color: #333;">x</span><span class="p">)</span></span>
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<pre style="margin: 0;">+<span id="LC121" class="line" lang="haskell"><span class="n" style="color: #333;">sorry</span> <span class="n" style="color: #333;">x</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">throwPlainGhcException</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">PlainSorry</span> <span class="o" style="font-weight: 600;"><span class="idiff left">$</span></span><span class="idiff"> </span><span class="p"><span class="idiff">(</span></span><span class="n" style="color: #333;"><span class="idiff">prettyCallStack</span></span><span class="idiff"> </span><span class="n" style="color: #333;"><span class="idiff">callStack</span></span><span class="p"><span class="idiff">)</span></span><span class="idiff"> </span><span class="o" style="font-weight: 600;"><span class="idiff">++</span></span><span class="idiff"> </span><span class="s" style="color: #d14;"><span class="idiff">"</span></span><span class="se" style="color: #d14;"><span class="idiff">\n</span></span><span class="s" style="color: #d14;"><span class="idiff">"</span></span><span class="idiff"> </span><span class="o" style="font-weight: 600;"><span class="idiff">++</span></span><span class="idiff right"> </span><span class="n" style="color: #333;">x</span><span class="p">)</span></span>
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<pre style="margin: 0;">+<span id="LC122" class="line" lang="haskell"><span class="n" style="color: #333;">pgmError</span> <span class="n" style="color: #333;">x</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">throwPlainGhcException</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">PlainProgramError</span> <span class="o" style="font-weight: 600;"><span class="idiff left">$</span></span><span class="idiff"> </span><span class="p"><span class="idiff">(</span></span><span class="n" style="color: #333;"><span class="idiff">prettyCallStack</span></span><span class="idiff"> </span><span class="n" style="color: #333;"><span class="idiff">callStack</span></span><span class="p"><span class="idiff">)</span></span><span class="idiff"> </span><span class="o" style="font-weight: 600;"><span class="idiff">++</span></span><span class="idiff"> </span><span class="s" style="color: #d14;"><span class="idiff">"</span></span><span class="se" style="color: #d14;"><span class="idiff">\n</span></span><span class="s" style="color: #d14;"><span class="idiff">"</span></span><span class="idiff"> </span><span class="o" style="font-weight: 600;"><span class="idiff right">++</span></span><span class="n" style="color: #333;">x</span><span class="p">)</span></span>
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<pre style="margin: 0;"> <span id="LC123" class="line" lang="haskell"></span>
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<pre style="margin: 0;"> <span id="LC124" class="line" lang="haskell"><span class="n" style="color: #333;">cmdLineError</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">String</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="LC125" class="line" lang="haskell"><span class="n" style="color: #333;">cmdLineError</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">unsafeDupablePerformIO</span> <span class="o" style="font-weight: 600;">.</span> <span class="n" style="color: #333;">cmdLineErrorIO</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">@@ -132,7 +132,7 @@ cmdLineErrorIO x = do</td>
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<pre style="margin: 0;"> <span id="LC132" class="line" lang="haskell"> <span class="kr" style="font-weight: 600;">else</span> <span class="n" style="color: #333;">throwPlainGhcException</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">PlainCmdLineError</span> <span class="p">(</span><span class="n" style="color: #333;">x</span> <span class="o" style="font-weight: 600;">++</span> <span class="sc" style="color: #d14;">'</span><span class="se" style="color: #d14;">\n</span><span class="sc" style="color: #d14;">'</span> <span class="o" style="font-weight: 600;">:</span> <span class="n" style="color: #333;">renderStack</span> <span class="n" style="color: #333;">stack</span><span class="p">))</span></span>
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<pre style="margin: 0;"> <span id="LC133" class="line" lang="haskell"></span>
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<pre style="margin: 0;"> <span id="LC134" class="line" lang="haskell"><span class="cd">-- | Throw a failed assertion exception for a given filename and line number.</span></span>
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<pre style="margin: 0;">-<span id="LC135" class="line" lang="haskell"><span class="n" style="color: #333;">assertPanic</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">String</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">Int</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="LC135" class="line" lang="haskell"><span class="n" style="color: #333;">assertPanic</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;"><span class="idiff left">HasCallStack</span></span><span class="idiff"> </span><span class="o" style="font-weight: 600;"><span class="idiff">=></span></span><span class="idiff right"> </span><span class="kt" style="color: #458; font-weight: 600;">String</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">Int</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="LC136" class="line" lang="haskell"><span class="n" style="color: #333;">assertPanic</span> <span class="n" style="color: #333;">file</span> <span class="n" style="color: #333;">line</span> <span class="o" style="font-weight: 600;">=</span></span>
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<pre style="margin: 0;"> <span id="LC137" class="line" lang="haskell"> <span class="kt" style="color: #458; font-weight: 600;">Exception</span><span class="o" style="font-weight: 600;">.</span><span class="n" style="color: #333;">throw</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">Exception</span><span class="o" style="font-weight: 600;">.</span><span class="kt" style="color: #458; font-weight: 600;">AssertionFailed</span></span>
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<pre style="margin: 0;">-<span id="LC138" class="line" lang="haskell"> <span class="p">(</span><span class="s" style="color: #d14;"><span class="idiff left right">"</span>ASSERT failed! file "</span> <span class="o" style="font-weight: 600;">++</span> <span class="n" style="color: #333;">file</span> <span class="o" style="font-weight: 600;">++</span> <span class="s" style="color: #d14;">", line "</span> <span class="o" style="font-weight: 600;">++</span> <span class="n" style="color: #333;">show</span> <span class="n" style="color: #333;">line</span><span class="p">))</span></span></pre>
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<pre style="margin: 0;">+<span id="LC138" class="line" lang="haskell"> <span class="p">(<span class="idiff left">(</span></span><span class="n" style="color: #333;"><span class="idiff">prettyCallStack</span></span><span class="idiff"> </span><span class="n" style="color: #333;"><span class="idiff">callStack</span></span><span class="p"><span class="idiff">)</span></span><span class="idiff"> </span><span class="o" style="font-weight: 600;"><span class="idiff">++</span></span><span class="idiff"> </span><span class="s" style="color: #d14;"><span class="idiff">"</span></span><span class="se" style="color: #d14;"><span class="idiff right">\n</span></span><span class="s" style="color: #d14;">ASSERT failed! file "</span> <span class="o" style="font-weight: 600;">++</span> <span class="n" style="color: #333;">file</span> <span class="o" style="font-weight: 600;">++</span> <span class="s" style="color: #d14;">", line "</span> <span class="o" style="font-weight: 600;">++</span> <span class="n" style="color: #333;">show</span> <span class="n" style="color: #333;">line</span><span class="p">))</span></span></pre>
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