implemented our own traceback after error by attaching gdb
@@ -123,12 +123,10 @@ cout <<y;
int main()
{
#ifdef USE_TRACEBACK
sigtraceback(SIGSEGV,1);
sigtraceback(SIGABRT,1);
sigtraceback(SIGBUS,1);
sigtraceback(SIGFPE,1);
#endif
NRVec<double> x(1.,10);
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