Patch: RFC: String sharing heuristic

[Bryce McKinlay]

Tom Tromey wrote:

>Please comment on this.
>
>Christopher Lansdown  showed me  an example program  that unexpectedly
>used  a lot of  memory (as  compared to  running on  jamvm).  Analysis
>showed that  he was  using substring(), which  was keeping  the entire
>contents  of  his 300M  log  file live  --  whereas  the heuristic  in
>Classpath's substring() avoided this.
>  
>
I filed a PR on this so we don't forget it:

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=21753

Bryce