[Issue 1316] New: Can't directly reference members of CTFE struct arrays
d-bugmail at puremagic.com
d-bugmail at puremagic.com
Thu Jul 5 09:08:39 PDT 2007
http://d.puremagic.com/issues/show_bug.cgi?id=1316
Summary: Can't directly reference members of CTFE struct arrays
Product: D
Version: 1.018
Platform: PC
OS/Version: Windows
Status: NEW
Severity: normal
Priority: P2
Component: DMD
AssignedTo: bugzilla at digitalmars.com
ReportedBy: clugdbug at yahoo.com.au
Two variations, with different error messages.
----------------
struct S { int a; }
int func()
{
S [] s = [S(7)];
return s[0].a; // Error: cannot evaluate func() at compile time
}
void main()
{ const int x = func(); }
--------------
VARIANT 2 (attempted workaround):
--------------
struct S { int a; }
int func()
{
S [] s = [S(7)];
return (s[0]).a; // Fails:
// bug.d(9): Error: s is used as a type
// bug.d(9): Error: no property 'a' for type 'void[0u]'
}
void main()
{ const int x = func(); }
----------
Workaround is to index the array first, then access the member.
----------
int func()
{
S [] s = [S(7)];
auto q = s[0];
return q.a; // OK
}
--
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