Bug 1204 – segfault using struct in CTFE

Seems to be a memory corruption problem. Doesn't happen if unused, unused2 are removed. --------- struct V { int a; int b; } V f() { int q = 0; int unused; int unused2; return V(q, 0); } void main() { const w = f(); } ========================== Probably more helpful is this version, which prints: No expression copy for: unused just before it crashes. ------------------------ struct V { int a; int b; } V f() { int q = 0; int unused; int unused2; return V(q, 0); } void main() { const w = f().b; }

DMD-1.014 on Linux doesn't crash but results in incorrect values for V.a and V.b. Added to DStress as http://dstress.kuehne.cn/run/s/struct_30_A.d http://dstress.kuehne.cn/run/s/struct_30_B.d http://dstress.kuehne.cn/compile/s/struct_30_C.d http://dstress.kuehne.cn/compile/s/struct_30_D.d

Another example or problem with struct and char literals in CTFE: import std.stdio; struct Col2Spec { char[] type; char[] name; } char[] f() { char[] id = "x", id2 = "y"; Col2Spec a = Col2Spec(id,"a"); // error in CTFE // Col2Spec a = Col2Spec("b",id2); // works int i = 2; assert(i - i, "Should be 'a', is " ~ a.name); // output, line: 13 return "ret"; } void main() { const static char[] w = f(); // line: 18 // f(); // works } // sb.d(18): Error: cannot evaluate f() at compile time

Fixed DMD 1.018 and DMD 2.002