https://issues.dlang.org/show_bug.cgi?id=13060

          Issue ID: 13060
           Summary: @nogc reading an associative array
           Product: D
           Version: D2
          Hardware: x86
                OS: Windows
            Status: NEW
          Keywords: rejects-valid
          Severity: normal
          Priority: P1
         Component: DMD
          Assignee: nobody@puremagic.com
          Reporter: bearophile_hugs@eml.cc

void foo(int[int] aa) @nogc {
    auto y = aa[0];
}
void main() {}



Gives with dmd 2.066beta1:

test.d(2,16): Error: indexing an associative array in @nogc function foo may
cause GC allocation


AA.rehash could cause memory allocations, but looking for a key in an associative could be regarded as @nogc.

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