https://gcc.gnu.org/bugzilla/show_bug.cgi?id=63649
Bug ID: 63649
Summary: 5.0: ICE with init_priority
Product: gcc
Version: 5.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c++
Assignee: unassigned at gcc dot gnu.org
Reporter: adam at os dot inf.tu-dresden.de
The following code causes an ICE:
struct Per_cpu_ctor_data
{
typedef void (*Func)();
Per_cpu_ctor_data() = default;
void *_base;
};
class Per_cpu_data
{
private:
typedef Per_cpu_ctor_data Ctor;
struct Ctor_vector { void push_back(Ctor::Func func); };
static Ctor_vector ctors;
};
template< typename T >
class Per_cpu : private Per_cpu_data
{
public:
typedef T Type;
Per_cpu();
static void f1();
};
template< typename T > Per_cpu<T>::Per_cpu() { ctors.push_back(&f1); }
template< typename T > void Per_cpu<T>::f1() {}
class A { static Per_cpu<int *> a; };
static Per_cpu_ctor_data __b;
__attribute__((init_priority(0xfffe))) Per_cpu<int *> A::a;
$ g++ --version
g++ (GCC) 5.0.0 20141026 (experimental)
$ uname -m
x86_64
$ g++ -c -std=c++0x -O1 t.i
mem_space.i:31:59: internal compiler error: Segmentation fault
__attribute__((init_priority(0xfffe))) Per_cpu<int *> A::a;
^
0xc022af crash_signal
../../gcc/gcc/toplev.c:349
0x11df22c ipa_comdats
../../gcc/gcc/ipa-comdats.c:330
0x11df22c execute
../../gcc/gcc/ipa-comdats.c:371
Please submit a full bug report,
with preprocessed source if appropriate.
Please include the complete backtrace with any bug report.
See <http://gcc.gnu.org/bugs.html> for instructions.
I could not reduce the testcase more as the segfault would not happen.
The segfault also does not happen with -O0, and it also does not happen with
init_priority 0xffff.
Code compiles with gcc <= 4.9.
