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September 03, 2009 [Issue 3282] New: The overload and override issue of const/immutable member functions | ||||
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http://d.puremagic.com/issues/show_bug.cgi?id=3282 Summary: The overload and override issue of const/immutable member functions Product: D Version: 2.031 Platform: Other OS/Version: Windows Status: NEW Severity: normal Priority: P2 Component: DMD AssignedTo: nobody@puremagic.com ReportedBy: rayerd.wiz@gmail.com import std.stdio; class Base { string f() { return "Base.f()"; } } class Derived : Base { string f() { return "Derived.f()"; } string f() const // or immutable { return "Derived.f() const"; } } void main() { auto x = new Base; writeln(x.f()); auto y = new Derived; writeln(y.f()); auto z = new const(Derived); // or immutable writeln(z.f()); //object.Error: Access Violation } -- Configure issuemail: http://d.puremagic.com/issues/userprefs.cgi?tab=email ------- You are receiving this mail because: ------- |
October 19, 2009 [Issue 3282] The overload and override issue of const/immutable member functions | ||||
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Posted in reply to rayerd.wiz@gmail.com | http://d.puremagic.com/issues/show_bug.cgi?id=3282 --- Comment #1 from Haruki Shigemori <rayerd.wiz@gmail.com> 2009-10-19 03:22:09 PDT --- This problem occurs when "const" is "shared". -- Configure issuemail: http://d.puremagic.com/issues/userprefs.cgi?tab=email ------- You are receiving this mail because: ------- |
January 22, 2010 [Issue 3282] The overload and override issue of const/immutable member functions | ||||
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Posted in reply to rayerd.wiz@gmail.com | http://d.puremagic.com/issues/show_bug.cgi?id=3282 Rainer Schuetze <r.sagitario@gmx.de> changed: What |Removed |Added ---------------------------------------------------------------------------- CC| |r.sagitario@gmx.de --- Comment #2 from Rainer Schuetze <r.sagitario@gmx.de> 2010-01-22 00:37:37 PST --- This kind of works now with changeset 344. But both "f()" and "f() const" overload "f()" in the base class, and the last one wins. I think dmd should either issue an error or add another entry to the vtbl for the non-exact but covariant match. -- Configure issuemail: http://d.puremagic.com/issues/userprefs.cgi?tab=email ------- You are receiving this mail because: ------- |
January 31, 2010 [Issue 3282] The overload and override issue of const/immutable member functions | ||||
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Posted in reply to rayerd.wiz@gmail.com | http://d.puremagic.com/issues/show_bug.cgi?id=3282 --- Comment #3 from Haruki Shigemori <rayerd.wiz@gmail.com> 2010-01-30 23:34:40 PST --- This problem's characteristics changed at dmd2.040. import std.stdio; class Base { string f() { return "Base.f()"; } } class Derived : Base { string f() { return "Derived.f()"; } string f() immutable { return "Derived.f() immutable"; } string f() shared { return "Derived.f() shared"; } } void main() { auto x = new Base; writeln(x.f()); auto y = new Derived; writeln(y.f()); auto z = new immutable(Derived); //main.d(15): Error: function main.Derived.f of type immutable string() overrides but is not covariant with main.Base.f of type string() writeln(z.f()); auto w = new shared(Derived); //main.d(19): Error: function main.Derived.f of type shared string() overrides but is not covariant with main.Base.f of type string() writeln(w.f()); } Are both errors correctly? I expected that z.f() calls "Derived.f() immutable" and w.f() calls "Derived.f() shared". -- Configure issuemail: http://d.puremagic.com/issues/userprefs.cgi?tab=email ------- You are receiving this mail because: ------- |
January 23, 2012 [Issue 3282] The overload and override issue of const/immutable member functions | ||||
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Posted in reply to rayerd.wiz@gmail.com | http://d.puremagic.com/issues/show_bug.cgi?id=3282 Walter Bright <bugzilla@digitalmars.com> changed: What |Removed |Added ---------------------------------------------------------------------------- Status|NEW |RESOLVED CC| |bugzilla@digitalmars.com Resolution| |FIXED --- Comment #4 from Walter Bright <bugzilla@digitalmars.com> 2012-01-23 01:28:50 PST --- I believe the errors are correct. -- Configure issuemail: http://d.puremagic.com/issues/userprefs.cgi?tab=email ------- You are receiving this mail because: ------- |
January 23, 2012 [Issue 3282] The overload and override issue of const/immutable member functions | ||||
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Posted in reply to rayerd.wiz@gmail.com | http://d.puremagic.com/issues/show_bug.cgi?id=3282 Walter Bright <bugzilla@digitalmars.com> changed: What |Removed |Added ---------------------------------------------------------------------------- Resolution|FIXED |WORKSFORME -- Configure issuemail: http://d.puremagic.com/issues/userprefs.cgi?tab=email ------- You are receiving this mail because: ------- |
January 23, 2012 [Issue 3282] The overload and override issue of const/immutable member functions | ||||
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Posted in reply to rayerd.wiz@gmail.com | http://d.puremagic.com/issues/show_bug.cgi?id=3282 timon.gehr@gmx.ch changed: What |Removed |Added ---------------------------------------------------------------------------- Status|RESOLVED |REOPENED CC| |timon.gehr@gmx.ch Resolution|WORKSFORME | --- Comment #5 from timon.gehr@gmx.ch 2012-01-23 13:41:57 PST --- I think it is a bug. The derived class introduces two additional overloads. The compiler claims that all three overloads override the same function. -- Configure issuemail: http://d.puremagic.com/issues/userprefs.cgi?tab=email ------- You are receiving this mail because: ------- |
January 23, 2012 [Issue 3282] The overload and override issue of const/immutable member functions | ||||
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Posted in reply to rayerd.wiz@gmail.com | http://d.puremagic.com/issues/show_bug.cgi?id=3282 Walter Bright <bugzilla@digitalmars.com> changed: What |Removed |Added ---------------------------------------------------------------------------- Status|REOPENED |RESOLVED Resolution| |INVALID --- Comment #6 from Walter Bright <bugzilla@digitalmars.com> 2012-01-23 15:47:44 PST --- (In reply to comment #5) > I think it is a bug. The derived class introduces two additional overloads. The compiler claims that all three overloads override the same function. The error messages are deliberate. -- Configure issuemail: http://d.puremagic.com/issues/userprefs.cgi?tab=email ------- You are receiving this mail because: ------- |
January 24, 2012 [Issue 3282] The overload and override issue of const/immutable member functions | ||||
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Posted in reply to rayerd.wiz@gmail.com | http://d.puremagic.com/issues/show_bug.cgi?id=3282 timon.gehr@gmx.ch changed: What |Removed |Added ---------------------------------------------------------------------------- Status|RESOLVED |REOPENED Resolution|INVALID | --- Comment #7 from timon.gehr@gmx.ch 2012-01-23 16:37:46 PST --- If so, why is this code accepted? class A{ void f(int){} } class B: A{ override void f(int){} void f(immutable int){} void f(shared int){} } What is the point of deliberately treating the hidden this pointer special regarding overloading? -- Configure issuemail: http://d.puremagic.com/issues/userprefs.cgi?tab=email ------- You are receiving this mail because: ------- |
January 24, 2012 [Issue 3282] The overload and override issue of const/immutable member functions | ||||
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Posted in reply to rayerd.wiz@gmail.com | http://d.puremagic.com/issues/show_bug.cgi?id=3282 --- Comment #8 from timon.gehr@gmx.ch 2012-01-23 16:39:10 PST --- Furthermore, this works, of course: class B{ void f(int){} void f(int)immutable{} void f(int)shared{} } -- Configure issuemail: http://d.puremagic.com/issues/userprefs.cgi?tab=email ------- You are receiving this mail because: ------- |
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