Bug 18003 – assert performs implicit conversion of mutable local static char array to string

Code: ------ void f() { char[6] err = "Argh!"; assert(0, err[0 .. $]); } void main() { f(); } ------ In the assert output, the message is garbled because it's a slice of the local variable `err`, which has gone out of scope by the time the error message is displayed. Expected behaviour: assert() should not allow mutable char[] as second argument, or the compiler should not allow implicit conversion of a mutable char[] slice to immutable(char)[].

P.S. Marking both functions as @safe and compiling with -dip25 and -dip1000 also fails to catch this leak of a reference to a local variable outside f().

*** This issue has been marked as a duplicate of issue 18002 ***