4 Nov
2006
4 Nov
'06
11:55 a.m.
Tsuna <tsuna(a)warszawa.lrde.epita.fr> writes:
Indeed.
% cat icpc-macro-issue.cc
template <typename T>
struct Foo
{
};
/* Icpc chokes when expanding this macro when T is a template type:
T is substituted with no additional surrounding space, generating
a token `>>'.
G++ has no such problem, but I haven't checked which is the right
behavior, required by the ISO standard.
Note that this will no longer be a problem with C++ 0x, since
expressions like `Foo<Foo<int>>' will be valid. */
#define foo(T) Foo<T>
int
main ()
{
foo(Foo<int>) f;
}
% icpc -gcc-name=gcc-4.0 -o icpc-macro-issue icpc-macro-issue.cc
icpc-macro-issue.cc(20): error: space required between adjacent ">"
delimiters of nested template argument lists (">>" is the right shift
operator)
foo(Foo<int>) f;
^
compilation aborted for icpc-macro-issue.cc (code 2)
% g++ -o icpc-macro-issue icpc-macro-issue.cc
%
On 2006-11-03, Roland Levillain
<roland(a)lrde.epita.fr> wrote:
> Roland Levillain <roland(a)lrde.epita.fr> writes:
>
>> https://svn.lrde.epita.fr/svn/oln/trunk/metalic
[...]
Index:
mlc/is_a.hh
===================================================================
--- mlc/is_a.hh (révision 693)
+++ mlc/is_a.hh (révision 694)
@@ -240,11 +240,11 @@
# define mlc_is_a(T, U) \
mlc::wrap_< \
- typename mlc::is_a_< sizeof(mlc::form::of< U >()) >::template ret<
typename mlc::basic_<T>::ret, U > \
+ typename mlc::is_a_< sizeof(mlc::form::of< U >()) >::template ret<
typename mlc::basic_< T >::ret, U > \
# define mlc_is_a_(T, U) \
-mlc::is_a_< sizeof(mlc::form::of< U >()) >::ret<
mlc::basic_<T>::ret, U
+mlc::is_a_< sizeof(mlc::form::of< U >()) >::ret< mlc::basic_< T
>::ret, U
[SNIP]
What's the problem with icpc? Why does it actually *need* whitespaces there?