Bug 17657 – wrong line number when optimized (dmd -O -g)

Wrong linenumer is reported for this code linenonullable.d --- 1 import std.stdio; 2 import std.typecons; 3 4 void main () 5 { 6 Nullable!int i; 7 if (i.isNull) { 8 "X".writeln; 9 int j = i; 10 } 11 } When compiled with dmd -g the output is X core.exception.AssertError@[...]: Called `get' on null Nullable!int. ---------------- [...] linenonullable.d:9_Dmain [0x4456eb] [...] when compiled with dmd -O -g I get [...] linenonullable.d:7 _Dmain [0x4456eb] [...] Expected: Same lineno. as in the unoptimized case is reported.

Err, I think using optimizations implies that you are willing to sacrifice accurate debug information. This is true for pretty much all compilers, so unless this is something easily fixable, I'm not sure if this is a valid bug report.

I cannot reproduce this. I am still getting the correct line number when compiling with -g -O using the latest compiler version.