GCC may have a defective template parsing routine which seems to mistake the
'<' token in an expression for the beginning of a template argument. The error
only seems to happen when a templated function evaluates a member of a
templated class or struct with a '<' symbol.
Here is a simple code snippet that reproduces the problem:
template <class T>
struct templated_struct
{
int count;
};
template <class T>
int template_func()
{
templated_struct<T> s;
if (s.count < 0) return 0;
return 0;
}
int main()
{
template_func<int> ();
return 0;
}
The compiler generates the follow error message when trying to compile the
above code:
test4.cc: In function int template_func():
test4.cc:16: error: parse error in template argument list
test4.cc: In function int template_func() [with T = int]:
test4.cc:22: instantiated from here
test4.cc:16: error: count is not a member template function
Note that the above code compiles just fine if you replace the '<' token in the
IF statement with an '>' or an '==', thus demonstrating that GCC seems to be
confusing the '<' token for a template argument.
A temporary workaround is to put a set of parenthesis around s.count.
--
Summary: Template Parsing Error
Product: gcc
Version: 4.1.2
Status: UNCONFIRMED
Severity: major
Priority: P3
Component: c++
AssignedTo: unassigned at gcc dot gnu dot org
ReportedBy: chsalvia at gmail dot com
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=32409
