The program:
import std.concurrency ;
import std.stdio ;
/*immutable*/ struct X { int i ; }
void printI ( ) {
receive (
( X x ) { writeln ( x.i ) ; }
) ;
}
int main ( immutable string[] args ) {
auto x = spawn ( & printI ) ;
x.send ( X ( 3 ) ) ;
return 0 ;
}behaves entirely as expected. Taking the comments off the immutable leads to: core.exception.AssertError@/home/users/russel/lib.Linux.x86_64/DMD2/bin64/../../src/phobos/std/variant.d(286): X ---------------- /tmp/.rdmd-1000/home/users/russel/Progs/OddsByLanguage/D/Odds/immutableStruct.d.EDDA68DBDAF917356C855298813D6CD2(_d_assert_msg+0x1f) [0x43f81f] /tmp/.rdmd-1000/home/users/russel/Progs/OddsByLanguage/D/Odds/immutableStruct.d.EDDA68DBDAF917356C855298813D6CD2(long std.variant.VariantN!(32uL).VariantN.handler!(immutableStruct.X).handler(std.variant.VariantN!(32uL).VariantN.OpID, ubyte[32]*, void*).bool tryPutting(immutableStruct.X*, TypeInfo, void*)+0x7a) [0x43b0fa] /tmp/.rdmd-1000/home/users/russel/Progs/OddsByLanguage/D/Odds/immutableStruct.d.EDDA68DBDAF917356C855298813D6CD2(long std.variant.VariantN!(32uL).VariantN.handler!(immutableStruct.X).handler(std.variant.VariantN!(32uL).VariantN.OpID, ubyte[32]*, void*)+0x103) [0x43ae03] /tmp/.rdmd-1000/home/users/russel/Progs/OddsByLanguage/D/Odds/immutableStruct.d.EDDA68DBDAF917356C855298813D6CD2(@property immutableStruct.X std.variant.VariantN!(32uL).VariantN.get!(immutableStruct.X).get()+0x57) [0x434cf7] /tmp/.rdmd-1000/home/users/russel/Progs/OddsByLanguage/D/Odds/immutableStruct.d.EDDA68DBDAF917356C855298813D6CD2(void std.concurrency.Message.map!(void function(immutableStruct.X)*).map(void function(immutableStruct.X)*)+0x46) [0x434c96] /tmp/.rdmd-1000/home/users/russel/Progs/OddsByLanguage/D/Odds/immutableStruct.d.EDDA68DBDAF917356C855298813D6CD2(bool std.concurrency.MessageBox.get!(void function(immutableStruct.X)*).get(scope void function(immutableStruct.X)*).bool onStandardMsg(ref std.concurrency.Message)+0x2d) [0x434731] /tmp/.rdmd-1000/home/users/russel/Progs/OddsByLanguage/D/Odds/immutableStruct.d.EDDA68DBDAF917356C855298813D6CD2(bool std.concurrency.MessageBox.get!(void function(immutableStruct.X)*).get(scope void function(immutableStruct.X)*).bool scan(ref std.concurrency.List!(std.concurrency.Message).List)+0xd3) [0x434a47] /tmp/.rdmd-1000/home/users/russel/Progs/OddsByLanguage/D/Odds/immutableStruct.d.EDDA68DBDAF917356C855298813D6CD2(bool std.concurrency.MessageBox.get!(void function(immutableStruct.X)*).get(scope void function(immutableStruct.X)*)+0x15e) [0x434692] /tmp/.rdmd-1000/home/users/russel/Progs/OddsByLanguage/D/Odds/immutableStruct.d.EDDA68DBDAF917356C855298813D6CD2(void std.concurrency.receive!(void function(immutableStruct.X)*).receive(void function(immutableStruct.X)*)+0x2e) [0x434526] /tmp/.rdmd-1000/home/users/russel/Progs/OddsByLanguage/D/Odds/immutableStruct.d.EDDA68DBDAF917356C855298813D6CD2(void immutableStruct.printI()+0x13) [0x433d1b] /tmp/.rdmd-1000/home/users/russel/Progs/OddsByLanguage/D/Odds/immutableStruct.d.EDDA68DBDAF917356C855298813D6CD2(_D3std11concurrency11__T6_spawnZ6_spawnFbPFZvZS3std11concurrency3Tid4execMFZv+0x3d) [0x43abb5] /tmp/.rdmd-1000/home/users/russel/Progs/OddsByLanguage/D/Odds/immutableStruct.d.EDDA68DBDAF917356C855298813D6CD2(void core.thread.Thread.run()+0x2a) [0x449caa] /tmp/.rdmd-1000/home/users/russel/Progs/OddsByLanguage/D/Odds/immutableStruct.d.EDDA68DBDAF917356C855298813D6CD2(thread_entryPoint+0xf3) [0x449a43] ---------------- I believe this is wrong on so many levels, but is it because I don't know D? -- Russel. ============================================================================= Dr Russel Winder t: +44 20 7585 2200 voip: sip:russel.win...@ekiga.net 41 Buckmaster Road m: +44 7770 465 077 xmpp: rus...@winder.org.uk London SW11 1EN, UK w: www.russel.org.uk skype: russel_winder
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