IntelC++ failed to compile thread_local extern std::stringstream::str(std::string) correctly

[Liu__Bensong]

I got a `segmentation fault` after compiling code below with icpc. However, clang++ and g++ compile it correctly.

// bug.cc
#include <sstream>
#include <string>

thread_local extern std::stringstream foo;

int main() {
    foo.str(std::string());
    return 0;
}

// lib.cc
#include <sstream>
thread_local std::stringstream foo;

Here's a screenshot while I'm reproducing the problem.

Source files and the log is attached. My OS is latest ArchLinux, and other OS information is shown on the screenshot.

[Viet_H_Intel]

Intel compiler version 18.0 doesn't support GCC 8.1. If you compile the test program on the system which had GCC 4.3 to 6.3 installed, then it should work.

Thanks,

Viet