Ruminations on D: An Interview with Walter Bright

Re:Ruminations on D: An Interview with Walter Bright by stonemetal on Tuesday August 30, 2016 @03:19PM (#12393049)

Always:

    import std.c.stdio;

    int main() {
	int x = 7;
	int* p = &x;
	 printf ("%d\n", *(p + 1));
	return 0;
    }

This compiles in D and violates memory safety.

If you prefer a documentation answer(https://dlang.org/spec/arrays.html#pointers) These are simple pointers to data, analogous to C pointers. Pointers are provided for interfacing with C and for specialized systems work. There is no length associated with it, and so there is no way for the compiler or runtime to do bounds checking, etc., on it.

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Re:Ruminations on D: An Interview with Walter Bright by WalterBright on Tuesday August 30, 2016 @04:01PM (#12393378)

Add '@safe' to main()'s declaration and it will no longer compile.

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Re:Ruminations on D: An Interview with Walter Bright by notriddle on Wednesday August 31, 2016 @12:08PM (#12399324)

    import std.stdio;

    @safe int f() {
      int* x = new int(6);
      delete x;  // !!
      return *x; // !!!!
    }

    @safe void main() {
      writeln(f());
    }

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Re:Ruminations on D: An Interview with Walter Bright by nialv7 on Wednesday August 31, 2016 @07:46PM (#12402297)

'delete' is in the process of being deprecated: https://dlang.org/deprecate.html#delete

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