g++编译出的多线程程序出错“segmentation fault"g++编译出的多线程程序出错“segmentation fault"



我使用的g++版本是g++ 4.4.3

升级到4.7版本：

add-apt-repository ppa:ubuntu-toolchain-r/test

apt-get update

apt-get install gcc-4.7-base

apt-get install gcc-4.7

apt-get install g++-4.7

update-alternatives --install /usr/bin/gcc gcc /usr/bin/gcc-4.6 60 --slave /usr/bin/g++ g++ /usr/bin/g++-4.6

update-alternatives --install /usr/bin/gcc gcc /usr/bin/gcc-4.7 40 --slave /usr/bin/g++ g++ /usr/bin/g++-4.7

update-alternatives --config gcc

重新编译：

g++ -std=c++0x A.cpp -o a

再次运行./a或者/tmp/a

再次错误：terminate called after throwing an instance of 'std::system_error'

  what():  Enable multithreading to use std::thread: Operation not permitted

Aborted

解决方法：

g++ -std=c++0x -pthread A.cpp -o a

运行成功：

Launched from the main

Launched by thread 3

Launched by thread 4

Launched by thread 5

Launched by thread 6

Launched by thread 7

Launched by thread 8

Launched by thread 9

Launched by thread 2

Launched by thread 1

Launched by thread 0

代码例子：