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Work around unmerged types being returned from frontend.

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Fixes DMD testcase 'funclit'.
This commit is contained in:
David Nadlinger
2012-09-27 23:50:52 +02:00
parent 4a1cbc2d33
commit 3f9f13594c
1 changed files with 14 additions and 1 deletions
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15
gen/tocall.cpp
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@@ -25,7 +25,20 @@ TypeFunction* DtoTypeFunction(DValue* fnval)
}
else if (type->ty == Tdelegate)
{
Type* next = type->nextOf();
// FIXME: There is really no reason why the function type should be
// unmerged at this stage, but the frontend still seems to produce such
// cases; for example for the uint(uint) next type of the return type of
// (&zero)(), leading to a crash in DtoCallFunction:
// ---
// void test8198() {
// uint delegate(uint) zero() { return null; }
// auto a = (&zero)()(0);
// }
// ---
// Calling merge() here works around the symptoms, but does not fix the
// root cause.
Type* next = type->nextOf()->merge();
assert(next->ty == Tfunction);
return static_cast<TypeFunction*>(next);
}