[nem-bug] [Nemerle 0000784]: Stack Overflow

feedback at nemerle.org feedback at nemerle.org
Thu Feb 22 22:52:19 CET 2007


The following issue has been CLOSED
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<http://nemerle.org/bugs/view.php?id=784> 
======================================================================
Reported By:                IT
Assigned To:                
======================================================================
Project:                    Nemerle
Issue ID:                   784
Category:                   Compiler
Reproducibility:            always
Severity:                   major
Priority:                   high
Status:                     closed
Resolution:                 open
Fixed in Version:           
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Date Submitted:             11-11-2006 05:53 CET
Last Modified:              02-22-2007 22:52 CET
======================================================================
Summary:                    Stack Overflow
Description: 
Code:

using Nemerle.Utility;

module Program
{
  Main() : void
  {
    def (
    _ = "".ToString();
  }
}

This code causes the stack overflow in Visual Studio and crashes it.
Unfortunately, I could not reproduce the same case from command line. Here
is the explanation of what I figured out. See the Typer-PatternTyper.n
file.

It starts at the line 731 (method DoTypePattern):

            TypeTuplePattern (matched_value_type, [ex])

Then method TypeTuplePattern, line 357:

                def typed_pats = List.Map2 (types, pats, TypePattern);

Then method TypePattern, line 372:

          def typed = DoTypePattern (matched_value_type, pattern);

And finally infinite loop.
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----------------------------------------------------------------------
 IT - 02-22-07 22:52 
----------------------------------------------------------------------
Somehow fixed.

Issue History
Date Modified  Username       Field                    Change              
======================================================================
11-11-06 05:53 IT             New Issue                                    
02-22-07 22:52 IT             Status                   new => closed       
02-22-07 22:52 IT             Note Added: 0001777                          
======================================================================




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