The source of testdata change is following commit from the
intellij-community repo:
d2bfe3d14bfa48af585f1faddc9a0c37dc05e724
It changes how Java-resolution resolves constructors:
- before, *any* PsiMethod without type reference was treated as
constructor
- now, PsiMethod without type reference is treated as constructor
only if their *names also match*
In particular, in this test, 'void () {}', surprisingly, doesn't have a
type reference ('void' is parsed as PsiErrorElement:Identifier
expected), its name is '<unnamed>', and its visibility is
'package-private' (!)
Therefore, previously we thought that 'Nameless' has package-private
constructor and were reporting INVISIBLE_MEMBER.
Now we don't see any constructor so we add default constructor, which has
public-visibility -> error is gone.
Note that this change affects behavior only when "red" code is already
present in the project (for "green" code, assumption "method without type
reference is a constructor" is indeed correct).
Dmitry Savvinov