i was just making a few changes to my program, when all of a sudden g++ complained with an internal compiler error.
Clang however compiles it without any problems and also does not give any warnings, that would indicate anything weird.
I distilled the problem down to this:
#include <functional>
template<typename T>
class A{
T someVar;
};
template<typename T>
class B {
int x;
std::function<A<double>(A<int>&)> someLambda = [&](A<int>& aInt){
int xVar = x;
A<double> aRet;
return aRet;
};
};
int main(int argc, char** argv){
B<int> a;
return 0;
}
I tried both GCC 4.9.2 and 4.8.4, with both failing (internal compiler error).
Flags I used:
g++ -std=c++11 -O0 -g -Wall main.cpp -o gccBin
clang++ -std=c++11 -O0 -g -Wall main.cpp -o clangBin
main.cpp: In instantiation of 'struct B<int>::<lambda(class A<int>&)>':
main.cpp:10:7: required from here
main.cpp:14:24: internal compiler error: in tsubst_copy, at cp/pt.c:12569
int xVar = x;
^
libbacktrace could not find executable to open
Please submit a full bug report,
with preprocessed source if appropriate.
See <http://gcc.gnu.org/bugs.html> for instructions.
Clang++(3.5.1) compiles it without a problem, as I mentioned. I also tried multiple machines, everywhere the same.
Is there some kind of error I overlooked? I searched a bit on the internet and the only similar problems i could find should have been fixed by now (as the bugtracker states).
Could maybe someone try and run this code on their machine or give other advice?
Thank you,
Lazarus
