http://d.puremagic.com/issues/show_bug.cgi?id=7864
Summary: Structs with class members can't be sorted Product: D Version: unspecified Platform: All OS/Version: All Status: NEW Severity: regression Priority: P2 Component: DMD AssignedTo: nob...@puremagic.com ReportedBy: jmdavisp...@gmx.com --- Comment #0 from Jonathan M Davis <jmdavisp...@gmx.com> 2012-04-08 17:15:12 PDT --- This compiles with 2.058, but not with the latest head (which I assume is the same as 2.059 beta) import std.algorithm; import std.string; class C { string str; this(string str) { this.str = str; } override int opCmp(Object o) const { auto rhs = cast(C)o; assert(rhs); return cmp(str, rhs.str); } } struct S { C c; this(C c) { this.c = c; } int opCmp(S rhs) const { if(c < rhs.c) return -1; if(c > rhs.c) return 1; return 0; } int opCmp(const ref S rhs) const { if(c < rhs.c) return -1; if(c > rhs.c) return 1; return 0; } } void main() { S[] stuff; sort(stuff); } /home/jmdavis/dmd2/linux/bin/../../src/phobos/std/algorithm.d(6802): Error: static assert "Invalid predicate passed to sort: a < b" q.d(52): instantiated from here: sort!("a < b",cast(SwapStrategy)0,S[]) The same occurs if you use a SysTime instead of C, so the problem occurs whether the class is directly or indirectly insed of S. This strikes me as being similar to issue# 7808 (though not identical). That was fixed however, and this isn't. -- Configure issuemail: http://d.puremagic.com/issues/userprefs.cgi?tab=email ------- You are receiving this mail because: -------