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fix Issue 8171 - Broken std.algorithm.move for nested struct has no member

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This commit is contained in:
k-hara 2012-05-31 10:35:45 +09:00
parent c164f04018
commit 1bd9b79e84
1 changed files with 17 additions and 2 deletions
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19
std/algorithm.d
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@ -1352,7 +1352,8 @@ void move(T)(ref T source, ref T target)
static if (hasElaborateDestructor!T || hasElaborateCopyConstructor!T)
{
static T empty;
static if (T.tupleof[$-1].stringof.endsWith("this"))
static if (T.tupleof.length > 0 &&
T.tupleof[$-1].stringof.endsWith("this"))
{
// If T is nested struct, keep original context pointer
memcpy(&source, &empty, T.sizeof - (void*).sizeof);
@ -1443,7 +1444,8 @@ T move(T)(ref T source)
static if (hasElaborateDestructor!T || hasElaborateCopyConstructor!T)
{
static T empty;
static if (T.tupleof[$-1].stringof.endsWith("this"))
static if (T.tupleof.length > 0 &&
T.tupleof[$-1].stringof.endsWith("this"))
{
// If T is nested struct, keep original context pointer
memcpy(&source, &empty, T.sizeof - (void*).sizeof);
@ -1557,6 +1559,19 @@ unittest// Issue 8057
a.x = 1;
auto b = foo(a);
assert(b.x == 1);
// Regression 8171
static struct Array(T)
{
// nested struct has no member
struct Payload
{
~this() {}
}
}
Array!int.Payload x = void;
static assert(__traits(compiles, move(x) ));
static assert(__traits(compiles, move(x, x) ));
}
// moveAll