* internal compile error
@ 2013-01-16 22:12 Ito Kazumitsu
2013-01-17 7:37 ` Per Bothner
0 siblings, 1 reply; 3+ messages in thread
From: Ito Kazumitsu @ 2013-01-16 22:12 UTC (permalink / raw)
To: kawa
Hi,
I have found a simple case where internal compile error occurs.
As shown below, Gauche and Guile runs the script normally.
$ cat 0.scm
(let loop ((n 1))
(cond
((= n 0) #t)
((and n (if #f #f)) (loop (- n 1)))))
$ gosh 0.scm
$ guile --no-auto-compile 0.scm
$ java -cp kawa-1.13.jar kawa.repl --script 0.scm
0.scm:4:6: internal compile error - caught java.lang.Error: popType called with empty stack atInteractiveLevel$1.run(gnu.mapping.CallContext)void
gnu.bytecode.CodeAttr.popType(CodeAttr.java:442)
gnu.bytecode.CodeAttr.emitGotoIfCompare1(CodeAttr.java:1627)
gnu.bytecode.CodeAttr.emitGotoIfIntEqZero(CodeAttr.java:1633)
gnu.expr.ConditionalTarget.compileFromStack(ConditionalTarget.java:52)
gnu.expr.QuoteExp.compile(QuoteExp.java:124)
gnu.expr.Expression.compileWithPosition(Expression.java:130)
gnu.expr.IfExp.compile(IfExp.java:123)
gnu.expr.IfExp.compile(IfExp.java:52)
gnu.expr.IfExp.compile(IfExp.java:114)
gnu.expr.IfExp.compile(IfExp.java:52)
gnu.expr.Expression.compileWithPosition(Expression.java:130)
gnu.expr.LetExp.compile(LetExp.java:193)
gnu.expr.Expression.compileNotePosition(Expression.java:156)
gnu.expr.Expression.compileWithPosition(Expression.java:127)
gnu.expr.IfExp.compile(IfExp.java:137)
gnu.expr.IfExp.compile(IfExp.java:52)
gnu.expr.Expression.compileNotePosition(Expression.java:156)
gnu.expr.Expression.compileWithPosition(Expression.java:127)
gnu.expr.ApplyExp.compile(ApplyExp.java:333)
gnu.expr.ApplyExp.compile(ApplyExp.java:132)
gnu.expr.Expression.compileNotePosition(Expression.java:156)
gnu.expr.Expression.compileWithPosition(Expression.java:127)
gnu.expr.BeginExp.compile(BeginExp.java:153)
gnu.expr.Expression.compileNotePosition(Expression.java:156)
gnu.expr.Expression.compileWithPosition(Expression.java:127)
gnu.expr.LetExp.compile(LetExp.java:193)
gnu.expr.Expression.compileNotePosition(Expression.java:156)
gnu.expr.Expression.compileWithPosition(Expression.java:142)
gnu.expr.LambdaExp.compileBody(LambdaExp.java:1722)
gnu.expr.Compilation.generateBytecode(Compilation.java:2080)
gnu.expr.Compilation.process(Compilation.java:1957)
gnu.expr.ModuleInfo.loadByStages(ModuleInfo.java:305)
gnu.expr.ModuleExp.evalToClass(ModuleExp.java:59)
gnu.expr.ModuleExp.evalModule1(ModuleExp.java:251)
gnu.expr.ModuleExp.evalModule(ModuleExp.java:205)
kawa.Shell.run(Shell.java:279)
kawa.Shell.runFile(Shell.java:486)
kawa.Shell.runFileOrClass(Shell.java:420)
kawa.repl.processArgs(repl.java:274)
kawa.repl.main(repl.java:869)
^ permalink raw reply [flat|nested] 3+ messages in thread
* Re: internal compile error
2013-01-16 22:12 internal compile error Ito Kazumitsu
@ 2013-01-17 7:37 ` Per Bothner
2013-01-17 21:49 ` Ito Kazumitsu
0 siblings, 1 reply; 3+ messages in thread
From: Per Bothner @ 2013-01-17 7:37 UTC (permalink / raw)
To: Ito Kazumitsu; +Cc: kawa
On 01/16/2013 02:11 PM, Ito Kazumitsu wrote:
> Hi,
>
> I have found a simple case where internal compile error occurs.
Thanks. I looked into it. I have a fix for this specific case, but
there are some related issues with void-valued expressions. One is
I'd like to enhance the compiler so it emits a warning (or possibly
an error) when it sees this kind of use of a void value.
> As shown below, Gauche and Guile runs the script normally.
Well, "running the script normally" is not well-defined given
that the script depends on an unspecified value.
--
--Per Bothner
per@bothner.com http://per.bothner.com/
^ permalink raw reply [flat|nested] 3+ messages in thread
* Re: internal compile error
2013-01-17 7:37 ` Per Bothner
@ 2013-01-17 21:49 ` Ito Kazumitsu
0 siblings, 0 replies; 3+ messages in thread
From: Ito Kazumitsu @ 2013-01-17 21:49 UTC (permalink / raw)
To: kawa
>> As shown below, Gauche and Guile runs the script normally.
>
> Well, "running the script normally" is not well-defined given
> that the script depends on an unspecified value.
I had a misunderstanding that an unspecified value is something
special, at least something other than #f. Referring to R5RS,
I understand that an unspecified value is implementation-dependent,
so it may or may not be #f.
^ permalink raw reply [flat|nested] 3+ messages in thread
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