http://gcc.gnu.org/bugzilla/show_bug.cgi?id=48522
Summary: decltype((object)) with templated classes crashes g++
4.5.1.
Product: gcc
Version: 4.5.1
Status: UNCONFIRMED
Severity: major
Priority: P3
Component: c++
AssignedTo: unassig...@gcc.gnu.org
ReportedBy: da...@rgmadvisors.com
Created attachment 23933
--> http://gcc.gnu.org/bugzilla/attachment.cgi?id=23933
Preprocessed broken_decltype.cpp
Hello All,
The following innocent-looking code crashes the compiler:
template <typename T>
struct Handle
{
Handle(T& t);
};
template<class T>
struct Class {
struct Struct {} data;
void f();
void g();
};
template<class T>
void Class<T>::f() {
Handle< decltype((data)) > handle(data);
}
template<class T>
void Class<T>::g() {
Handle< decltype((data)) > handle(data);
}
The command line and compiler output were:
g++ -std=g++0x broken_decltype.cpp (see attachment for detailed flags)
broken_decltype.cpp: In member function ‘void Class<T>::g()’:
broken_decltype.cpp:21:30: internal compiler error: Segmentation fault
Please submit a full bug report,
with preprocessed source if appropriate
This fails on multiple distributions including Linux 2.6.35.6-45.fc14.x86_64,
GNU C++ (GCC) version 4.5.1 20100924 (Red Hat 4.5.1-4) (x86_64-redhat-linux)
compiled by GNU C version 4.5.1 20100924 (Red Hat 4.5.1-4), GMP version 4.3.1,
MPFR version 2.4.2, MPC version 0.8.1
Cheers!
David.
