The following invalid code snippet triggers an ICE on the 4.1 branch
(introduced after 4.1.1) and mainline:
============================================
template<typename T> struct A
{
typedef struct typename T::X X;
};
template<typename T> A<T>::X::X() {}
============================================
bug.cc:3: error: expected identifier before 'typename'
bug.cc:3: error: two or more data types in declaration of 'X'
bug.cc:6: error: ISO C++ forbids declaration of 'X' with no type
bug.cc:6: internal compiler error: in is_ancestor, at cp/name-lookup.c:2247
Please submit a full bug report, [etc.]
Probably related to PR27102.
--
Summary: [4.1/4.2 regression] ICE on invalid typedef
Product: gcc
Version: 4.2.0
Status: UNCONFIRMED
Keywords: ice-on-invalid-code, error-recovery, monitored
Severity: normal
Priority: P3
Component: c++
AssignedTo: unassigned at gcc dot gnu dot org
ReportedBy: reichelt at gcc dot gnu dot org
BugsThisDependsOn: 27102
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=28303
