[antlr-interest] ANTLR v3.3 infinite loop

Terence Parr parrt at cs.usfca.edu
Wed Dec 1 08:02:59 PST 2010


hi. please turn on -Xwatchdfaconversion and see which decision kills it. this is rare but not impossible.  Then, add backtrack=true and k=1 options to that decision to resolve.  or restructure that decision.

Please report back on success.

Ter

On Dec 1, 2010, at 5:16 AM, Rene Vestergaard wrote:

> Fellow ANTLRs,
> 
> My biggest .g file (~850 lines) appears to send 3.3 into an infinite 
> loop (>10mins) that keeps allocating heap space (>3GBs).
> 
> On 3.2, the same task takes a few seconds and around 100MB.
> 
> Any advice on how to pinpoint the problem?
> 
> Cheers,
> Rene
> 
> List: http://www.antlr.org/mailman/listinfo/antlr-interest
> Unsubscribe: http://www.antlr.org/mailman/options/antlr-interest/your-email-address



More information about the antlr-interest mailing list