https://gcc.gnu.org/bugzilla/show_bug.cgi?id=79416
Bug ID: 79416
Summary: Internal compiler error for recursive template
expansion
Product: gcc
Version: 5.4.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c++
Assignee: unassigned at gcc dot gnu.org
Reporter: mini at cs dot technion.ac.il
Target Milestone: ---
Target: x86_64-linux-gnu
gcc version 5.4.0 20160609 (Ubuntu 5.4.0-6ubuntu1~16.04.4)
I ran it about 10 times. 9 times I got this output:
$ g++ prog.cpp
g++: internal compiler error: Killed (program cc1plus)
Please submit a full bug report,
with preprocessed source if appropriate.
See <file:///usr/share/doc/gcc-5/README.Bugs> for instructions.
I got this output 1 time:
$ g++ prog.cpp
cc1plus: out of memory allocating 268435144 bytes after a total of 101212160
bytes
to reproduce:
$ cat prog.cpp
template <int N>
void nops() __attribute((always_inline));
template <int N>
void more_nops() __attribute((always_inline));
template <int N>
inline void nops()
{
asm("nop");
nops<N - 1>();
}
template<>
inline void nops<0>()
{
};
template <int N>
inline void more_nops()
{
nops<800>();
more_nops<N - 1>();
};
template<>
inline void more_nops<0>()
{
};
int main() {
more_nops<300>();
}
$ g++ prog.cpp
