[Issue 18356] no property 'tempCString' for type 'const(char)[]'

[d-bugmail at puremagic.com]

https://issues.dlang.org/show_bug.cgi?id=18356

--- Comment #2 from Heromyth <bitworld at qq.com> ---
The test code passed with DMD-nightly and failed with DMD 2.078.2.

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