Bug 829 – struct operator overload returns a wrong value (suspect NRVO bug)

The code below output is "nannannan".The code works properly in DMD 0.177 but fails in DMD 0.178 and 1.00. --code--------------------- import std.stdio; void main() { Vector3 a; a.set(1,1,1); a = a*2; writefln(a.x, a.y, a.z); } struct Vector3 { float x,y,z; // constructor void set(float _x, float _y, float _z) { x = _x; y = _y; z = _z; } Vector3 opMul(float s) { Vector3 ret; ret.x = x*s; ret.y = y*s; ret.z = z*s; return ret; } }

This appears to be a result of the NRVO added in DMD 0.178. The test program works fine with DMD 0.177, but fails with 0.178.

Fixed. Confirmed using dmd 1.004 on both linux and windows.

Added to DStress as http://dstress.kuehne.cn/run/s/struct_27_B.d http://dstress.kuehne.cn/run/s/struct_27_C.d