| 2013-03-11 20:26:43 |
Ian Forbes |
description |
g++ crashes when compiling C++11 code. I believe the error in particular has to with the features from the <future> and <thread> headers, i.e. package_tasks and futures. The code in particular that crashed g++ was when I had a type mismatch in the packaged_task<T> template parameter. Rather than warning of a type mismatch g++ crashes.
The particular code is the following (I do not include the prototyped functions here but they have no errors):
Note the type mismatch between the packaged_task and simulate2(void);
#include <random>
#include <iostream>
#include <chrono>
#include <thread>
#include <future>
using namespace std;
static int threads = 10;
static int runs = 1000000; //1 000 000
double f(double);
double simulate(double,double,int);
double simulate2(void);
int main(void){
packaged_task<double(double,double,int)> simulations[threads];
future<double> results[threads];
chrono::high_resolution_clock::time_point lStart = chrono::high_resolution_clock::now();
for(int i = 0; i < threads; i++){
simulations[i] = packaged_task<double(double,double,int)> (&simulate2); //Type Mismatch
/*Expected double(double,double,int) but actual type is double(void)*/
results[i] = simulations[i].get_future();
thread(std::move(simulations[i]), 0, 4, runs/threads).detach();//100 000 000 * 10
}
double sum = 0;
for(future<double>& task : results){
sum += task.get();
}
cout << "Threaded: " << sum/(double)threads << endl;
chrono::high_resolution_clock::time_point lEnd = chrono::high_resolution_clock::now();
cout << "Time: " << chrono::duration_cast<chrono::milliseconds>(lEnd - lStart).count() << endl;
lStart = chrono::high_resolution_clock::now();
cout << "Single:" << simulate(0, 4, runs) << endl; //1 000 000 000 Single Thread
lEnd = chrono::high_resolution_clock::now();
cout << "Time: " << chrono::duration_cast<chrono::milliseconds>(lEnd - lStart).count() << endl;
return 0;
}
ProblemType: Crash
DistroRelease: Ubuntu 13.04
Package: g++-4.7 4.7.2-22ubuntu3
ProcVersionSignature: Ubuntu 3.8.0-11.20-generic 3.8.2
Uname: Linux 3.8.0-11-generic x86_64
ApportVersion: 2.9.1-0ubuntu1
Architecture: amd64
Date: Mon Mar 11 15:13:39 2013
ExecutablePath: /usr/lib/gcc/x86_64-linux-gnu/4.7/cc1plus
MarkForUpload: True
SourcePackage: gcc-4.7
UpgradeStatus: No upgrade log present (probably fresh install) |
g++ crashes when compiling C++11 code. I believe the error in particular has to with the features from the <future> and <thread> headers, i.e. package_tasks and futures. The code in particular that crashed g++ was when I had a type mismatch in the packaged_task<T> template parameter. Rather than warning of a type mismatch g++ crashes.
The particular code is the following (I do not include the prototyped functions here but they have no errors):
Note the type mismatch between the packaged_task and simulate2(void);
ProblemType: Crash
DistroRelease: Ubuntu 13.04
Package: g++-4.7 4.7.2-22ubuntu3
ProcVersionSignature: Ubuntu 3.8.0-11.20-generic 3.8.2
Uname: Linux 3.8.0-11-generic x86_64
ApportVersion: 2.9.1-0ubuntu1
Architecture: amd64
Date: Mon Mar 11 15:13:39 2013
ExecutablePath: /usr/lib/gcc/x86_64-linux-gnu/4.7/cc1plus
MarkForUpload: True
SourcePackage: gcc-4.7
UpgradeStatus: No upgrade log present (probably fresh install) |
|
| 2013-03-11 20:26:58 |
Ian Forbes |
description |
g++ crashes when compiling C++11 code. I believe the error in particular has to with the features from the <future> and <thread> headers, i.e. package_tasks and futures. The code in particular that crashed g++ was when I had a type mismatch in the packaged_task<T> template parameter. Rather than warning of a type mismatch g++ crashes.
The particular code is the following (I do not include the prototyped functions here but they have no errors):
Note the type mismatch between the packaged_task and simulate2(void);
ProblemType: Crash
DistroRelease: Ubuntu 13.04
Package: g++-4.7 4.7.2-22ubuntu3
ProcVersionSignature: Ubuntu 3.8.0-11.20-generic 3.8.2
Uname: Linux 3.8.0-11-generic x86_64
ApportVersion: 2.9.1-0ubuntu1
Architecture: amd64
Date: Mon Mar 11 15:13:39 2013
ExecutablePath: /usr/lib/gcc/x86_64-linux-gnu/4.7/cc1plus
MarkForUpload: True
SourcePackage: gcc-4.7
UpgradeStatus: No upgrade log present (probably fresh install) |
g++ crashes when compiling C++11 code. I believe the error in particular has to with the features from the <future> and <thread> headers, i.e. package_tasks and futures. The code in particular that crashed g++ was when I had a type mismatch in the packaged_task<T> template parameter. Rather than warning of a type mismatch g++ crashes.
The particular code attached as rng.cpp
Note the type mismatch between the packaged_task and simulate2(void);
ProblemType: Crash
DistroRelease: Ubuntu 13.04
Package: g++-4.7 4.7.2-22ubuntu3
ProcVersionSignature: Ubuntu 3.8.0-11.20-generic 3.8.2
Uname: Linux 3.8.0-11-generic x86_64
ApportVersion: 2.9.1-0ubuntu1
Architecture: amd64
Date: Mon Mar 11 15:13:39 2013
ExecutablePath: /usr/lib/gcc/x86_64-linux-gnu/4.7/cc1plus
MarkForUpload: True
SourcePackage: gcc-4.7
UpgradeStatus: No upgrade log present (probably fresh install) |
|
