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POC++11 async segmentation fault
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Id
17307388
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2013-06-25T20:57:31.243
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2013-07-15T19:30:53.267
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2013-06-26T14:09:50.607
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text
Body
Can someone explain what I am doing wrong here: <pre><code>#include <future> #include <iostream> int main() { std::future<int> result( std::async([](int m) { return m+1;}, 2)); std::cout << "In main" << std::endl; std::cout << result.get(); } </code></pre> With GCC 4.8 or 4.9, I get a segmentation fault. : <pre><code>./a.out: In main Segmentation fault: 11 : /opt/local/bin/g++-mp-4.8 -v Using built-in specs. COLLECT_GCC=/opt/local/bin/g++-mp-4.8 COLLECT_LTO_WRAPPER=/opt/local/libexec/gcc/x86_64-apple-darwin12/4.8.1/lto-wrapper Target: x86_64-apple-darwin12 Configured with: ../gcc-4.8.1/configure --prefix=/opt/local --build=x86_64-apple-darwin12 --enable-languages=c,c++,objc,obj-c++,lto,fortran,java --libdir=/opt/local/lib/gcc48 --includedir=/opt/local/include/gcc48 --infodir=/opt/local/share/info --mandir=/opt/local/share/man --datarootdir=/opt/local/share/gcc-4.8 --with-local-prefix=/opt/local --with-system-zlib --disable-nls --program-suffix=-mp-4.8 --with-gxx-include-dir=/opt/local/include/gcc48/c++/ --with-gmp=/opt/local --with-mpfr=/opt/local --with-mpc=/opt/local --with-ppl=/opt/local --with-cloog=/opt/local --enable-cloog-backend=isl --disable-cloog-version-check --enable-stage1-checking --disable-multilib --enable-lto --enable-libstdcxx-time --with-as=/opt/local/bin/as --with-ld=/opt/local/bin/ld --with-ar=/opt/local/bin/ar --with-bugurl=https://trac.macports.org/newticket --with-pkgversion='MacPorts gcc48 4.8.1_0' Thread model: posix gcc version 4.8.1 (MacPorts gcc48 4.8.1_0) </code></pre> Edit: Some people have pointed to another answer that says link with pthread. That does not solve the problem: <pre><code>: /opt/local/bin/g++-mp-4.8 -std=c++11 -lpthread thread5.cc : ./a.out In main Segmentation fault: 11 </code></pre>
Tags
<multithreading><asynchronous><c++11>
Title
C++11 async segmentation fault
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