• Nick Voronin (34/34) Dec 12 2010 pointsTo() tries to check every member of anonymous union inside struct.
• Nick Voronin (21/22) Dec 12 2010 alias this makes a passable workaround though. (I hope) :)

"Nick Voronin" <elfy.nv gmail.com> writes:

pointsTo() tries to check every member of anonymous union inside struct.

import std.exception;

union U
{
	int i;
	string s;
}

struct S1
{
	int type;
	U u;
}
struct S2
{
	int type;
	union {
		int i;
		string s;
	}
}

void main()
{
	S1 s1;
	s1.u.i = 0x7FFF_FFFF;
	S2 s2;
	s2.i = 0x7FFF_FFFF;
	assert(!pointsTo(s1, s1)); // pass, pointsTo does not look into union
	assert(!pointsTo(s2, s2)); // fails because pointsTo tries to check every  
member of anonymous union
}

IMHO it should ignore unions, anonymous or not, checking every member of  
them just doesn't make sense.

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"Nick Voronin" <elfy.nv gmail.com> writes:

On Sun, 12 Dec 2010 22:36:03 +0300, Nick Voronin <elfy.nv gmail.com> wrote:

 pointsTo() tries to check every member of anonymous union inside struct.

alias this makes a passable workaround though. (I hope) :)


union U
{
	int i;
	string s;
}

struct S3
{
	int type;
	U u;
	alias u this;
}

void main()
{
	S3 s3;
	s3.i = 0x7FFF_FFFF;
	assert(!pointsTo(s3, s3)); // pass
}


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