问题
So I wrote a program to test threads on 64 bit kubuntu linux, version 13.04. Actually I robbed the code from someone else who was writing a test program.
#include <cstdlib>
#include <iostream>
#include <thread>
void task1(const std::string msg)
{
std::cout << \"task1 says: \" << msg << std::endl;
}
int main(int argc, char **argv)
{
std::thread t1(task1, \"Hello\");
t1.join();
return EXIT_SUCCESS;
}
I compiled using:
g++ -pthread -std=c++11 -c main.cpp
g++ main.o -o main.out
Then ran:
./main.out
As an aside, when I \'ls -l\', main.out shows up in in green text like all executables, but also has an asterisk at the end of its name. Why is this?
Back to the problem in hand: When I ran main.out, an error appeared, which said:
terminate called after throwing an instance of \'std::system_error\'
what(): Operation not permitted
Aborted (core dumped)
Anyone any ideas on how to fix this?
回答1:
You are not linking pthread properly, try below command(note: order matters)
g++ main.cpp -o main.out -pthread -std=c++11
OR
Do it with two commands
g++ -c main.cpp -pthread -std=c++11 // generate target object file
g++ main.o -o main.out -pthread -std=c++11 // link to target binary
来源：https://stackoverflow.com/questions/17274032/c-threads-stdsystem-error-operation-not-permitted