[Issue 18957] extern(C++) doesn't mangle 'std' correctly on posix systems

[d-bugmail at puremagic.com]

https://issues.dlang.org/show_bug.cgi?id=18957

--- Comment #2 from github-bugzilla at puremagic.com ---
Commit pushed to master at https://github.com/dlang/dmd

https://github.com/dlang/dmd/commit/4b17e0b1a08b161fb69b3c68dc7b468749181264
Fix issue 18957 - extern(C++) doesn't mangle 'std' correctly on posix systems

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