digitalmars.D.bugs - [Issue 4960] New: dmd 2.049 rejects code containing templates with a uint as template parameter
- d-bugmail puremagic.com (33/33) Sep 30 2010 http://d.puremagic.com/issues/show_bug.cgi?id=4960
- d-bugmail puremagic.com (27/27) Sep 30 2010 http://d.puremagic.com/issues/show_bug.cgi?id=4960
- d-bugmail puremagic.com (42/42) Sep 30 2010 http://d.puremagic.com/issues/show_bug.cgi?id=4960
- d-bugmail puremagic.com (15/15) Oct 01 2010 http://d.puremagic.com/issues/show_bug.cgi?id=4960
- d-bugmail puremagic.com (10/10) Dec 20 2012 http://d.puremagic.com/issues/show_bug.cgi?id=4960
http://d.puremagic.com/issues/show_bug.cgi?id=4960 Summary: dmd 2.049 rejects code containing templates with a uint as template parameter Product: D Version: D2 Platform: x86 OS/Version: Linux Status: NEW Severity: normal Priority: P2 Component: DMD AssignedTo: nobody puremagic.com ReportedBy: CaptainSifff web.de Created an attachment (id=778) the failing piece of code Hi there the following code is rejected by dmd 2.049 With the help of some helpful people in the D IRC channel I inserted the pragmas into the code to highlight that dmd seems to somehow mix these two identical types up. If compiled the output is: ../../dmd2/linux/bin/dmd -O ChargeChargeCorrelation_Paste.d C29ChargeChargeCorrelation_Paste18__T9MeanfieldVxk1Z1U C29ChargeChargeCorrelation_Paste17__T9MeanfieldVk1Z1U ChargeChargeCorrelation_Paste.d(23): Error: cannot implicitly convert expression (timeevolver) of type ChargeChargeCorrelation_Paste.main.Meanfield!(dimension).U to ChargeChargeCorrelation_Paste.Meanfield!(dim).U The first two lines coming from the pragmas. If the alias is put into the global namespace the example compiles. -- Configure issuemail: http://d.puremagic.com/issues/userprefs.cgi?tab=email ------- You are receiving this mail because: -------
Sep 30 2010
http://d.puremagic.com/issues/show_bug.cgi?id=4960 Austin Hastings <ah08010-d yahoo.com> changed: What |Removed |Added ---------------------------------------------------------------------------- CC| |ah08010-d yahoo.com PDT --- I get similar behavior on windows. Here is a smaller bit of code that reproduces the issue (I think): ========== class U(uint dim) { } void chargecharge_entry(uint dim)( U!(dim) time ) { //pragma(msg, "param: " ~ typeof( time ).mangleof); } void main() { const uint dimension = 1; alias U!(dimension) TimeEvolver; //pragma(msg, "main: " ~ TimeEvolver.mangleof); chargecharge_entry!(dimension)( new TimeEvolver ); } ========== For me emits: test.d(41): Error: cannot implicitly convert expression (new U) of type test.main.U!(dimension).U to test.U!(dim).U -- Configure issuemail: http://d.puremagic.com/issues/userprefs.cgi?tab=email ------- You are receiving this mail because: -------
Sep 30 2010
http://d.puremagic.com/issues/show_bug.cgi?id=4960 bearophile_hugs eml.cc changed: What |Removed |Added ---------------------------------------------------------------------------- CC| |bearophile_hugs eml.cc Also note the effect of this version of the same program: template MeanField(int dim) { class U { cdouble opCall() { return 0.0 + 0.0i; } } } void chargeChargeEntry(int dim)(MeanField!(dim).U time) { pragma(msg, MeanField!(dim).U.mangleof); } void main() { alias MeanField!(1).U TimeEvolver; TimeEvolver timeEvolver = new TimeEvolver; pragma(msg, TimeEvolver.mangleof); chargeChargeEntry!(1)(timeEvolver); } Or even this version: class U(int dim) { cdouble opCall() { return 0.0 + 0.0i; } } void chargeChargeEntry(int dim)(U!dim time) { pragma(msg, (U!dim).mangleof); } void main() { alias U!1 TimeEvolver; TimeEvolver timeEvolver = new TimeEvolver; pragma(msg, TimeEvolver.mangleof); chargeChargeEntry!(1)(timeEvolver); } See also bug 3467 -- Configure issuemail: http://d.puremagic.com/issues/userprefs.cgi?tab=email ------- You are receiving this mail because: -------
Sep 30 2010
http://d.puremagic.com/issues/show_bug.cgi?id=4960 I agree, your issue sounds similar, but in contrast to your code where there might be a slight difference between the types because the template takes an uint and you instantiate it with an int literal, my example uses uints exclusively and the parameter dimension is typed as an uint. So, there should be no reason for ambiguity... I just tested your programs and they compiled with dmd 2.049... Whereas changing austins example to using int doesn't lead to an compiling program... Essentially I don't get what's going wrong now... -- Configure issuemail: http://d.puremagic.com/issues/userprefs.cgi?tab=email ------- You are receiving this mail because: -------
Oct 01 2010
http://d.puremagic.com/issues/show_bug.cgi?id=4960 Andrej Mitrovic <andrej.mitrovich gmail.com> changed: What |Removed |Added ---------------------------------------------------------------------------- CC| |andrej.mitrovich gmail.com 13:05:57 PST --- As a workaround you can use an enum instead of a const uint. -- Configure issuemail: http://d.puremagic.com/issues/userprefs.cgi?tab=email ------- You are receiving this mail because: -------
Dec 20 2012