[Issue 7805] New: "static" allows free templated functions to accept struct fields as template alias parameters
d-bugmail at puremagic.com
d-bugmail at puremagic.com
Sat Mar 31 07:20:19 PDT 2012
http://d.puremagic.com/issues/show_bug.cgi?id=7805
Summary: "static" allows free templated functions to accept
struct fields as template alias parameters
Product: D
Version: D2
Platform: All
OS/Version: All
Status: NEW
Severity: normal
Priority: P2
Component: DMD
AssignedTo: nobody at puremagic.com
ReportedBy: thecybershadow at gmail.com
--- Comment #0 from Vladimir Panteleev <thecybershadow at gmail.com> 2012-03-31 07:20:50 PDT ---
//static
string f(alias X)()
{
return null;
}
struct S
{
int i;
mixin(f!i());
}
This program doesn't compile, however uncommenting "static" makes it work.
DMD 2.058 produces this error message:
test.d(8): Error: struct test.S no size yet for forward reference
DMD git produces a different error message:
test.d(2): Error: function test.S.f!(i).f need 'this' to access member f
Note that fixing this issue by making both cases fail to compile would break
code. I believe the Orange serialization library uses this trick to stringify
field names with minimal syntax overhead.
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