digitalmars.D.bugs - [Issue 23911] New: "Overlapping arrays in copy:" error message gone
- d-bugmail puremagic.com (34/34) May 10 2023 https://issues.dlang.org/show_bug.cgi?id=23911
https://issues.dlang.org/show_bug.cgi?id=23911 Issue ID: 23911 Summary: "Overlapping arrays in copy:" error message gone Product: D Version: D2 Hardware: All OS: All Status: NEW Keywords: diagnostic Severity: regression Priority: P1 Component: dmd Assignee: nobody puremagic.com Reporter: dlang-bugzilla thecybershadow.net ////////// bug.d ///////// void main() { auto c = new char[10]; c[0..6] = c[4 .. 10]; } ////////////////////////// This program used to produce a more useful error message. With 2.080: object.Error (0): Overlapping arrays in copy: 2 byte(s) overlap of 6 ---------------- ??:? nothrow safe void rt.util.array._enforceNoOverlap(const(char[]), ulong, ulong, const(ulong)) [0xd88da756] ??:? _d_arraycopy [0xd88d87ba] ??:? _Dmain [0xd88d8699] However, this is gone in 2.084 or later. Current versions just produce a nondescript "Range violation", which isn't even accurate, as all the indices are in-range. Even though one would expect the test to be in Druntime, bisection shows this to be a DMD regression. Introduced in https://github.com/dlang/dmd/pull/7867 --
May 10 2023