[Issue 19963] New: [Regression 2.066 - 2.067.1] nested pure functions variable access

[d-bugmail at puremagic.com]

https://issues.dlang.org/show_bug.cgi?id=19963

          Issue ID: 19963
           Summary: [Regression 2.066 - 2.067.1] nested pure functions
                    variable access
           Product: D
           Version: D2
          Hardware: All
                OS: All
            Status: NEW
          Severity: regression
          Priority: P1
         Component: dmd
          Assignee: nobody at puremagic.com
          Reporter: iamthewilsonator at hotmail.com

>From the source code of DMD no less!

void f() {
  int fx;
  pure void g() {
    int gx;
    /+pure+/ void h() {
      int hx;
      /+pure+/ void i() { fx = 0; }
    }
   }
}

should give 

Error: pure nested function 'g' cannot access mutable data 'fx'
if the commented out `purees are removed it should give 

Error: pure nested function 'i' cannot access mutable data 'fx'

three times.

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