I've reduced my case as much as possible below.
#include <vector>
#include <atomic>
#include <chrono>
using namespace std;
class Unused
{
private:
vector<vector<unsigned>> data;
atomic<unsigned> counter;
};
class Timer
{
private:
chrono::time_point<chrono::high_resolution_clock> begin;
public:
void start()
{
begin = std::chrono::high_resolution_clock::now();
}
};
int main()
{
Unused unused;
vector<Timer> timers;
timers.resize(1);
timers[0].start();
}
I've compiled it as (note the specific flags):
cl /O2 /GL /EHsc driver.cpp
This is with
Microsoft (R) C/C++-Optimierungscompiler Version 19.27.29111 für x86
Microsoft (R) Incremental Linker Version 14.27.29111.0
but I've tried a couple of other recent versions as well. The executable segfaults with a memory access violation. It works with g++, and it works if I change the compile flags. It also works is I simplify the code further.
Is this a compiler bug?
