Bug 8575 – Lambda expression causes compilation error with template function

This code doesn't work! ------------ template tfunc(fun...) { auto tfunc(U)(U r) { return r; } } void bar(T)(T x) { // import std.functional; x.tfunc!(unaryFun!"a"); // <- OK x.tfunc!(a=>a); // <- NG } void test() { bar(uint.init); } void main() { bar(int.init); } ------------ RESULT ------------ $ dmd -run main Error: function main.bar!(uint).bar.tfunc!(__lambda2).tfunc!(int).tfunc is a nested function and cannot be accessed from main.bar!(int).bar ------------

Commits pushed to master at https://github.com/D-Programming-Language/dmd https://github.com/D-Programming-Language/dmd/commit/688f7ce593eef75997a2b8f2527d3cd9338692aa fix Issue 8575 - Lambda expression causes compilation error with template function Template lambda is an expression, so we should keep FuncExp until actually starting instantiation of passed template instance. https://github.com/D-Programming-Language/dmd/commit/8b82a0aa4feb863e9bbc53b36cc2008a7d994696 Merge pull request #1158 from 9rnsr/fix8575 fix Issue 8575 - Lambda expression causes compilation error with template function

Fixed for D2

(In reply to comment #3) > Fixed for D2 Lambda literal is only in D2. So we should mark this "RESOLVED FIXED".

Heh, the online documentation disagrees, but you're right.