[Issue 12576] New: problem with compile time struct field

[d-bugmail at puremagic.com]

https://issues.dlang.org/show_bug.cgi?id=12576

          Issue ID: 12576
           Summary: problem with compile time struct field
           Product: D
           Version: D2
          Hardware: x86_64
                OS: Linux
            Status: NEW
          Severity: enhancement
          Priority: P1
         Component: DMD
          Assignee: nobody at puremagic.com
          Reporter: ellery-newcomer at utulsa.edu

the code:


template Replace(string base, T...) 
{
    template NextAt(string base, string longest_spec, 
            size_t _at0, T...)
    {
    }

    NextAt!(base,"",-1,T) N;
}

struct _CppFunction {
    string funcname;
}

string CppClass1(string name, Clazz)() 
{
    enum _CppFunction cf = {
    };
    enum mix = Replace!("
        ReturnType Func(Params) {
            return Mangled(args);
        }\n", 
        "Func", cf.funcname);
    return mix;
}

enum Mixins = CppClass1!("X", typeof(new class { }));




the fireworks:

$ dmd error1
error1.d(9): Error: template instance NextAt!("\x0a        ReturnType
Func(Params) {\x0a            return Mangled(args);\x0a        }\x0a", "", -1,
"Func", funcname) cannot use local 'funcname' as parameter to non-global
template NextAt(string base, string longest_spec, ulong _at0, T...)
error1.d(20): Error: template instance error1._CppFunction.Replace!("\x0a      
 ReturnType Func(Params) {\x0a            return Mangled(args);\x0a       
}\x0a", "Func", funcname) error instantiating
error1.d(28):        instantiated from here: CppClass1!("X", __anonclass1)

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