digitalmars.D.bugs - [Issue 10952] New: struct ctor with defaulted parameters should not be allowed
- d-bugmail puremagic.com (31/31) Sep 02 2013 http://d.puremagic.com/issues/show_bug.cgi?id=10952
- d-bugmail puremagic.com (33/33) Sep 02 2013 http://d.puremagic.com/issues/show_bug.cgi?id=10952
- d-bugmail puremagic.com (11/11) Sep 17 2013 http://d.puremagic.com/issues/show_bug.cgi?id=10952
http://d.puremagic.com/issues/show_bug.cgi?id=10952 Summary: struct ctor with defaulted parameters should not be allowed Product: D Version: D2 Platform: All OS/Version: All Status: NEW Keywords: accepts-invalid Severity: normal Priority: P2 Component: DMD AssignedTo: nobody puremagic.com ReportedBy: andrej.mitrovich gmail.com 09:59:30 PDT --- ----- struct S { this(int x = 1) { assert(0); } // never throws } void main() { auto s = S(); } ----- If we're really never going to support user-provided default ctors (like it is now), then the above should become a compile-time error. That default argument can't be used. -- Configure issuemail: http://d.puremagic.com/issues/userprefs.cgi?tab=email ------- You are receiving this mail because: -------
Sep 02 2013
http://d.puremagic.com/issues/show_bug.cgi?id=10952 10:09:41 PDT --- Additionally I'm curious about the class situation: class C { this(int x = 1) { assert(0); } } According to the DMDFE, this is *not* a default ctor, and yet, it's the only one generated in the assembly code. What exactly is the terminology for a default constructor (with regards to defaulted parameters)? It's also interesting that Object.factory returns null if you have any ctor, even one with with a defaulted parameter: ----- class C { this(int x = 1) { } } import std.stdio; void main() { auto c = Object.factory("test.C"); assert(c !is null); // fails } ----- So we have the situation where: auto s = S(); // works, but doesn't call the user ctor auto c = new C(); // works AND calls the user ctor Object.factory("test.C"); // works only if there's no user-ctor, even one with default parameters This is an inconsistent mess. -- Configure issuemail: http://d.puremagic.com/issues/userprefs.cgi?tab=email ------- You are receiving this mail because: -------
Sep 02 2013
http://d.puremagic.com/issues/show_bug.cgi?id=10952 Andrej Mitrovic <andrej.mitrovich gmail.com> changed: What |Removed |Added ---------------------------------------------------------------------------- Status|NEW |RESOLVED Resolution| |DUPLICATE 12:15:53 PDT --- *** This issue has been marked as a duplicate of issue 3438 *** -- Configure issuemail: http://d.puremagic.com/issues/userprefs.cgi?tab=email ------- You are receiving this mail because: -------
Sep 17 2013