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Tim Keith 51fe223916 [flang] Fix bug with statement functions
When the name of a statement function was previously declared, we
weren't correctly recognizing it as a statement function. E.g.
```
integer :: f, i
f(i) = i + 1
```

`f` was entered in the symbol table with `EntityDetails` and the
`parser::Name` on the first line was resolved to that symbol.
On the second line we replaced the symbol for `f` in the scope
with a subprogram symbol, but that didn't change the symbol in
the first `parser::Name`.

The fix requires:
1. don't erase the original symbol for `f`, just replace its details
2. when we erase the symbol for `f` in the subprogram scope, don't
   unresolve it

Original-commit: flang-compiler/f18@31212686ea
2019-08-26 15:46:49 -07:00
flang [flang] Fix bug with statement functions 2019-08-26 15:46:49 -07:00