Jens -- Just to add to Michael's response, the rationale for this change (if it's not obvious) was to reduce the chances of unintentional races and memory consistency model issues.
-Brad On Tue, 12 Jan 2016, Michael Ferguson wrote: > Hi Jens - > > Good to hear from you. The semantics of forall loops changed > in version 1.11 -- see > http://chapel.cray.com/docs/master/language/evolution.html#forall-intents > > In particular, with your example > > >> $ cat main.chpl >> config const n = 100000; >> >> >> proc main() { >> var temp : int = 0; >> temp = 1; >> forall i in {1..n} do { >> if (i == 0) { >> temp = 1; >> } >> } >> >> >> writeln("temp = ", temp); >> } > > you would have to write it this way > > forall i in 1..n with (ref temp) { > > } > > to write that program since the default is to > copy integer variables into a forall loop (so > that they are read-only (rvalues) within the > loop). > > Note also that the do before a curly brace > (as in for i in 1..10 do { ) > > and the curly braces around the 1..n > (as in for i in {1..10} ) > > are unnecessary. I tried to write the forall > loop in better style in my example above. > > Cheers, > > -michael > > > ------------------------------------------------------------------------------ > Site24x7 APM Insight: Get Deep Visibility into Application Performance > APM + Mobile APM + RUM: Monitor 3 App instances at just $35/Month > Monitor end-to-end web transactions and take corrective actions now > Troubleshoot faster and improve end-user experience. Signup Now! > http://pubads.g.doubleclick.net/gampad/clk?id=267308311&iu=/4140 > _______________________________________________ > Chapel-bugs mailing list > [email protected] > https://lists.sourceforge.net/lists/listinfo/chapel-bugs > ------------------------------------------------------------------------------ Site24x7 APM Insight: Get Deep Visibility into Application Performance APM + Mobile APM + RUM: Monitor 3 App instances at just $35/Month Monitor end-to-end web transactions and take corrective actions now Troubleshoot faster and improve end-user experience. Signup Now! http://pubads.g.doubleclick.net/gampad/clk?id=267308311&iu=/4140 _______________________________________________ Chapel-bugs mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/chapel-bugs
