The C++ frontend generates a broken diagnostic for the following code
snippet since GCC 3.4.0:
==============================================
template<int> void foo(int(*f=0)());
==============================================
bug.cc:1: error: variable or field 'foo' declared void
bug.cc:1: error: 'f' was not declared in this scope
bug.cc:1: error: '(int)(#'modop_expr' not supported by dump_expr#<expression
error>)' cannot be used as a function
Another testcase for the unsupported 'modop_expr' is the following:
==============================================
template<int> struct A
{
int i;
typeof(A = A()) i;
};
==============================================
bug.cc:2: error: expected primary-expression before '=' token
bug.cc:2: error: declaration of '__typeof__ (#'modop_expr' not supported by
dump_expr#<expression error>) A<<anonymous> >::i'
bug.cc:1: error: conflicts with previous declaration 'int A<<anonymous> >::i'
--
Summary: [4.1/4.2/4.3 regression] Broken diagnostic: 'modop_expr'
not supported by dump_expr
Product: gcc
Version: 4.3.0
Status: UNCONFIRMED
Keywords: diagnostic, monitored
Severity: normal
Priority: P3
Component: c++
AssignedTo: unassigned at gcc dot gnu dot org
ReportedBy: reichelt at gcc dot gnu dot org
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=33494
