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@specialize vs @inline, part 2: the crashening #5006

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scabug opened this issue Sep 19, 2011 · 3 comments
Closed

@specialize vs @inline, part 2: the crashening #5006

scabug opened this issue Sep 19, 2011 · 3 comments
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@paulp

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@scabug
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scabug commented Sep 19, 2011 

class C2[@specialized(Boolean) U]() {
  @inline final def apply(x: U): U = x
}
% scalac29 -optimise a.scala 
% scalac29 -optimise a.scala 
error: Companions 'class C2$mcF$sp' and 'object C2$mcF$sp' must be defined in same file
	at scala.tools.nsc.symtab.Symbols$Symbol.isCoDefinedWith(Symbols.scala:1268)
	at scala.tools.nsc.symtab.Symbols$Symbol$$anonfun$companionClass$1.apply(Symbols.scala:1304)
	at scala.tools.nsc.symtab.Symbols$Symbol$$anonfun$companionClass$1.apply(Symbols.scala:1304)
	at scala.tools.nsc.symtab.Symbols$Symbol.filter(Symbols.scala:1046)
	at scala.tools.nsc.symtab.Symbols$Symbol.suchThat(Symbols.scala:1051)
	at scala.tools.nsc.symtab.Symbols$Symbol.companionClass(Symbols.scala:1304)
	at scala.tools.nsc.symtab.Symbols$Symbol.companionSymbol(Symbols.scala:1334)
	at scala.tools.nsc.symtab.SymbolLoaders$SymbolLoader.complete(SymbolLoaders.scala:116)
	at scala.tools.nsc.symtab.SymbolLoaders$SymbolLoader.complete(SymbolLoaders.scala:85)
	at scala.tools.nsc.symtab.Symbols$Symbol.info(Symbols.scala:727)
	at scala.tools.nsc.symtab.Symbols$Symbol.initialize(Symbols.scala:839)
	at scala.tools.nsc.symtab.SymbolLoaders$moduleClassLoader$.doComplete(SymbolLoaders.scala:331)
	at scala.tools.nsc.symtab.SymbolLoaders$SymbolLoader.complete(SymbolLoaders.scala:111)
	at scala.tools.nsc.symtab.SymbolLoaders$SymbolLoader.complete(SymbolLoaders.scala:85)
	at scala.tools.nsc.symtab.Symbols$Symbol.info(Symbols.scala:727)

See also #5005.
@scabug
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scabug commented Sep 19, 2011

Imported From: https://issues.scala-lang.org/browse/SI-5006?orig=1
Reporter: @paulp

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scabug commented Sep 19, 2011

@paulp said:
The humorous-to-me ticket title obscures that actually this is just an -optimise+@Specialize bug: no @inline or final needed. I can't believe there are crashers this easy to hit which haven't been reported...

class C2[@specialized(Boolean) U]() {
  def f(x: U): U = x
}

% scalac3 -optimise a.scala 
% scalac3 -optimise a.scala 
error: Companions 'class C2$mcZ$sp' and 'object C2$mcZ$sp' must be defined in same file
	at scala.reflect.internal.Symbols$Symbol.isCoDefinedWith(Symbols.scala:1464)
	at scala.reflect.internal.Symbols$Symbol$$anonfun$companionClass$1.apply(Symbols.scala:1500)
	at scala.reflect.internal.Symbols$Symbol$$anonfun$companionClass$1.apply(Symbols.scala:1500)
	at scala.reflect.internal.Symbols$Symbol.filter(Symbols.scala:1230)
	at scala.reflect.internal.Symbols$Symbol.suchThat(Symbols.scala:1234)
	at scala.reflect.internal.Symbols$Symbol.companionClass(Symbols.scala:1500)
	at scala.reflect.internal.Symbols$Symbol.companionSymbol(Symbols.scala:1530)
	at scala.tools.nsc.symtab.SymbolLoaders$SymbolLoader.complete(SymbolLoaders.scala:128)
	at scala.reflect.internal.Symbols$Symbol.info(Symbols.scala:859)

@scabug
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scabug commented Oct 31, 2011

@paulp said:
This one looks fixed via recent commit involving recognition of companions.

@scabug scabug closed this as completed Oct 31, 2011
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