Bug with std::stringstream inside a lambda and #pragma optimize("", off)

[User87135761]

Hi, it looks like I came across a compiler bug.

The following example seg faults on intel c++ 2018.5.274 on Linux:

#pragma optimize("", off) // it doesn't crash without this line
#include <sstream>

int main() {
    [] { std::stringstream{}; }();
}

compile with: icc -o main main.cpp

Using CentOS7

[User87135761]

I forgot to mention that it happens on Linux (CentOS7) but not on Windows 10.

I edited my post.

[Gopika_Intel]

Hi,

Thank you for reaching out. We were able to reproduce the issue. We’re looking into it and will get back to you.

Regards

Gopika

[Viet_H_Intel]

Not sure if you already knew, but Intel Classic Compiler will enter "Legacy Product Support" mode, signaling the end of regular updates. Please refer to the article bellow for more details.

https://www.intel.com/content/www/us/en/developer/articles/technical/adoption-of-llvm-complete-icx.h...

For that reason, Developer isn't plan to to fix this in Classic compiler. Can you migrate to icx/icpx? and let us know if we could close this case?

Thanks,

Viet

[Viet_H_Intel]

Please migrate to icx. We are going to close this as won't fix in C++ Classic compiler. If you need any additional information, please post a new question as this thread will no longer be monitored by Intel. 

Thanks,