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[Bug-kawa] [bug #32678] set! and endless loop
From: |
Helmut Eller |
Subject: |
[Bug-kawa] [bug #32678] set! and endless loop |
Date: |
Fri, 04 Mar 2011 15:30:20 +0000 |
User-agent: |
Opera/9.80 (X11; Linux i686; U; en) Presto/2.7.62 Version/11.01 |
URL:
<http://savannah.gnu.org/bugs/?32678>
Summary: set! and endless loop
Project: Kawa
Submitted by: ellerh
Submitted on: Fri 04 Mar 2011 03:30:19 PM GMT
Category: None
Severity: 3 - Normal
Item Group: None
Status: None
Privacy: Public
Assigned to: None
Open/Closed: Open
Discussion Lock: Any
_______________________________________________________
Details:
Kawa fails to compile this example:
(define (foo x)
(let ((fail 0)
(result #!null))
(if (instance? x pair)
(set! result (do () (#f)))
(set! fail -1))
(if (= fail 0)
result
#f)))
kawa --version -C /tmp/x.scm
Kawa 1.11 (revision 0:6912M)
Copyright (C) 2009 Per Bothner
(compiling /tmp/x.scm to x)
/tmp/x.scm:6: internal error while compiling /tmp/x.scm
java.lang.Error: popType called with empty stack
x.foo(java.lang.Object)java.lang.Object
at gnu.bytecode.CodeAttr.popType(CodeAttr.java:442)
at gnu.bytecode.CodeAttr.emitStore(CodeAttr.java:1372)
at gnu.expr.SetExp.compile(SetExp.java:276)
at gnu.expr.Expression.compileNotePosition(Expression.java:156)
at gnu.expr.Expression.compileWithPosition(Expression.java:127)
at gnu.expr.IfExp.compile(IfExp.java:118)
at gnu.expr.IfExp.compile(IfExp.java:52)
at gnu.expr.Expression.compileNotePosition(Expression.java:156)
at gnu.expr.Expression.compileWithPosition(Expression.java:127)
at gnu.expr.BeginExp.compile(BeginExp.java:142)
at gnu.expr.Expression.compileNotePosition(Expression.java:156)
at gnu.expr.Expression.compileWithPosition(Expression.java:127)
at gnu.expr.LetExp.compile(LetExp.java:196)
at gnu.expr.Expression.compileNotePosition(Expression.java:156)
at gnu.expr.Expression.compileWithPosition(Expression.java:142)
at gnu.expr.LambdaExp.compileBody(LambdaExp.java:1619)
at gnu.expr.LambdaExp.compileAsMethod(LambdaExp.java:1595)
at gnu.expr.LambdaExp.compileSetField(LambdaExp.java:656)
at gnu.expr.SetExp.compile(SetExp.java:168)
at gnu.expr.Expression.compileNotePosition(Expression.java:156)
at gnu.expr.Expression.compileWithPosition(Expression.java:142)
at gnu.expr.LambdaExp.compileBody(LambdaExp.java:1619)
at gnu.expr.Compilation.generateBytecode(Compilation.java:2014)
at gnu.expr.Compilation.process(Compilation.java:1892)
at gnu.expr.ModuleInfo.loadByStages(ModuleInfo.java:305)
at gnu.expr.ModuleInfo.loadByStages(ModuleInfo.java:290)
at kawa.repl.compileFiles(repl.java:783)
at kawa.repl.processArgs(repl.java:412)
at kawa.repl.main(repl.java:829)
_______________________________________________________
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<http://savannah.gnu.org/bugs/?32678>
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- [Bug-kawa] [bug #32678] set! and endless loop,
Helmut Eller <=