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Fixed D-style vararg arguments with types that have sizes bigger that pointers, yet are not aligned to pointer sizes. Fixes ticket #276 .

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This commit is contained in:
Tomas Lindquist Olsen
2009-05-10 04:37:03 +02:00
parent d1f582583b
commit dbe4852b7b
1 changed files with 22 additions and 2 deletions
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24
gen/tocall.cpp
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@@ -141,8 +141,28 @@ void DtoBuildDVarArgList(std::vector<LLValue*>& args, std::vector<llvm::Attribut
assert(argexp->type->ty != Ttuple);
vtypes.push_back(DtoType(argexp->type));
size_t sz = getTypePaddedSize(vtypes.back());
if (sz < PTRSIZE)
vtypes.back() = DtoSize_t();
size_t asz = (sz + PTRSIZE - 1) & ~(PTRSIZE -1);
if (sz != asz)
{
if (sz < PTRSIZE)
{
vtypes.back() = DtoSize_t();
}
else
{
// ok then... so we build some type that is big enough
// and aligned to PTRSIZE
std::vector<const LLType*> gah;
gah.reserve(asz/PTRSIZE);
size_t gah_sz = 0;
while (gah_sz < asz)
{
gah.push_back(DtoSize_t());
gah_sz += PTRSIZE;
}
vtypes.back() = LLStructType::get(gah, true);
}
}
}
const LLStructType* vtype = LLStructType::get(vtypes);