Bug 17683 – __traits compiles does not work with package.d

File m1.d --------------------------------------- module m1; import sub; void main() { import std.traits: fullyQualifiedName; mixin(`static assert(__traits(compiles, `~fullyQualifiedName!Bar~`.bar));`); } File sub/m2.d --------------------------------------- module sub.m2; class Bar { int bar; } File sub/package.d --------------------------------------- module sub; public import sub.m2; PS C:\Users\user\Desktop\source> dmd -run m1.d sub/package.d sub/m2.d m1.d-mixin-9(9): Error: static assert __traits(compiles, sub.m2.Bar.bar) is false While fullyQualifiedName is able to find the symbol Bar, __traits compiles does not find it. It works if I replace the package.d import with the specific module m2.d import Version: DMD32 D Compiler v2.075.0-rc1-master-af3eacf on Windows 10

Nothing to do with __traits(compiles). fullyQualifiedName!Bar expands to "sub.m2.Bar". That fully qualified names don't work with package modules is issue 11847. *** This issue has been marked as a duplicate of issue 11847 ***