digitalmars.D.bugs - [Issue 3879] New: compile-time assertion error in mtype.c: foreach through associative array w/ templated-class as value
- d-bugmail puremagic.com (92/92) Mar 04 2010 http://d.puremagic.com/issues/show_bug.cgi?id=3879
- d-bugmail puremagic.com (10/10) Mar 04 2010 http://d.puremagic.com/issues/show_bug.cgi?id=3879
- d-bugmail puremagic.com (26/27) Mar 05 2010 http://d.puremagic.com/issues/show_bug.cgi?id=3879
- d-bugmail puremagic.com (12/12) Mar 10 2010 http://d.puremagic.com/issues/show_bug.cgi?id=3879
http://d.puremagic.com/issues/show_bug.cgi?id=3879 Summary: compile-time assertion error in mtype.c: foreach through associative array w/ templated-class as value Product: D Version: 2.040 Platform: x86_64 OS/Version: Windows Status: NEW Severity: major Priority: P2 Component: DMD AssignedTo: nobody puremagic.com ReportedBy: njb303 gmail.com I'm working on a file with these classes so far: abstract class State(T:GameEntity) { string _name; property { const string name() const { return _name; } this(string name) { _name = name; } (and some empty virtual function decls that get defined by derived classes) } // and then the actual implementation for the various State nodes will be done through derived classes // so if I had a class DogRobot that derives from GameEntity, then it would // internally use a StateMachine!(DogRobot), which itself would be using // State!(DogRobot) for its states. Somewhere in DogRobot.d it would also // define those new State!(DogRobot)-derived classes that would then be // added to the State Machine via addState() class StateMachine(T:GameEntity) { ... State!(T)[string] _states; // THIS IS LINE 100 IN THE ERROR MESSAGES MENTIONED LATER -- assoc array for quickly retrieving states by their names // public, actual state objects added to the machine here void addState(State!(T) state) { ... (compiles fine) ... } void linkStates(string fromName, string toName, string eventName) { ... (compiles fine) ... } // so far so good, further down I have a function called printGraph() for debug output, and this is where I've run into assertion problems with DMD 2.040 compiler void printStates() { std.stdio.writefln("States:"); // each and every one of these below causes a compile-time error, // though different ones sometimes: // this leads to error: "__overloadset is not a template" on line 100 foreach (string key, State!(T); _states) std.stdio.writefln(" %1", key); // the rest of these each, individually, result in an assertion error // at compile-time which pops up twice. // In the actual code I commented-out the previous problematic lines // before trying the next approach/flavor. DMD 2.040 compiler's error // for each of these reads as follows: // // Assertion failure: 'impl' on line 3886 in file 'mtype.c' // // abnormal program termination // Assertion failure: 'impl' on line 3886 in file 'mtype.c' // // abnormal program termination // Various problematic code for THIS error is as follows: // first attempt foreach (string k; _states.keys) std.stdio.writefln(" %1", k); foreach (State!(T) s; _states.values) std.stdio.writefln(" %1", s.name); // incorrect in a different way I'm guessing... just a desperation try foreach (char[] k; _states.keys.sort) std.stdio.writefln(" %1", k); typedef State!(T) tstate; foreach (tstate s; _states.values) std.stdio.writefln(" %1", s.name); } // end printStates() } // end StateMachine class // end code snippet In the meantime I can probably get around this problem by getting rid of templates entirely and very carefully using delegates to act as "plugged-in behavior"... I was following the approach in an AI book I have, but there are other ways I can go about doing the same thing, I'm sure. -- Configure issuemail: http://d.puremagic.com/issues/userprefs.cgi?tab=email ------- You are receiving this mail because: -------
Mar 04 2010
http://d.puremagic.com/issues/show_bug.cgi?id=3879 Don <clugdbug yahoo.com.au> changed: What |Removed |Added ---------------------------------------------------------------------------- CC| |clugdbug yahoo.com.au This sounds like a duplicate of bug 3692. -- Configure issuemail: http://d.puremagic.com/issues/userprefs.cgi?tab=email ------- You are receiving this mail because: -------
Mar 04 2010
http://d.puremagic.com/issues/show_bug.cgi?id=3879This sounds like a duplicate of bug 3692.I took a look at that bug and did a little further tinkering. It seems you might be correct. I just removed the std.variant import directive that I hadn't mentioned (not thinking it had anything to do with the problem) and commented-out an unrelated class definition in the same file that used Variant, and the results are now: 1) The first line, that gave "__overloadset is not a template on line 100", now compiles fine. 2) The "foreach (string k; _states.keys)" approach now compiles fine. 3) The "foreach (State!(T) s; _states.values)" approach now compiles fine. 4) The "foreach (char[] k; _states.keys.sort)" approach now gives an appropriate error message (cannot implicily convert expression etc) instead of crashing with an assertion. 5) The final approach where I do declare State!(T) as a new typedef called 'tstate' and then do "foreach (tstate s; _states.values)" gives an error message instead of crashing -- "cannot implicitly convert expression"... which is surprising, though unrelated to what this bug report is about, and I'm not sure if I should submit another report on this particular thing because maybe doing typedefs on templated-classes is intentionally not-allowed? Anyway, I think you're right... removing any and all mention of std.variant from the source file changed the situation entirely. -- Configure issuemail: http://d.puremagic.com/issues/userprefs.cgi?tab=email ------- You are receiving this mail because: -------
Mar 05 2010
http://d.puremagic.com/issues/show_bug.cgi?id=3879 Don <clugdbug yahoo.com.au> changed: What |Removed |Added ---------------------------------------------------------------------------- Status|NEW |RESOLVED Resolution| |FIXED Since bug 3692 is fixed in DMD2.041, this one should be working now. Reopen if it that is not correct. -- Configure issuemail: http://d.puremagic.com/issues/userprefs.cgi?tab=email ------- You are receiving this mail because: -------
Mar 10 2010