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Enable default-initialized static arrays of voids.

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With a single byte (implicit and 0) as initializer, as each void
element occupies 1 byte.

This is required when building T.init for a struct T containing
a void[N] with N > 0 and building literals of T.
This commit is contained in:
Martin 2015-04-26 03:57:29 +02:00
parent 2f9b58e261
commit c76ac3496d
1 changed files with 5 additions and 8 deletions
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13
gen/llvmhelpers.cpp
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@ -404,10 +404,10 @@ void DtoAssign(Loc& loc, DValue* lhs, DValue* rhs, int op, bool canSkipPostblit)
} }
else if (t->ty == Tsarray) { else if (t->ty == Tsarray) {
// T[n] = T // T[n] = T
if (t->nextOf()->toBasetype()->equals(t2)) { if (t->nextOf()->toBasetype()->equals(t2) ||
DtoArrayInit(loc, lhs, rhs, op); DtoArrayElementType(t)->equals(stripModifiers(t2)) ||
} (t->nextOf()->toBasetype()->ty == Tvoid && t2->ty == Tuns8)
else if (DtoArrayElementType(t)->equals(stripModifiers(t2))) { ) {
DtoArrayInit(loc, lhs, rhs, op); DtoArrayInit(loc, lhs, rhs, op);
} }
else if (op != -1 && op != TOKblit && !canSkipPostblit && else if (op != -1 && op != TOKblit && !canSkipPostblit &&
@ -1342,12 +1342,9 @@ LLConstant* DtoConstExpInit(Loc& loc, Type* targetType, Expression* exp)
if (targetBase->ty == Tsarray) if (targetBase->ty == Tsarray)
{ {
if (targetBase->nextOf()->toBasetype()->ty == Tvoid) {
error(loc, "static arrays of voids have no default initializer");
fatal();
}
Logger::println("Building constant array initializer to single value."); Logger::println("Building constant array initializer to single value.");
assert(expBase->size() > 0);
d_uns64 elemCount = targetBase->size() / expBase->size(); d_uns64 elemCount = targetBase->size() / expBase->size();
assert(targetBase->size() % expBase->size() == 0); assert(targetBase->size() % expBase->size() == 0);