[Issue 20786] New: do attribute inference for all nested functions

[d-bugmail at puremagic.com]

https://issues.dlang.org/show_bug.cgi?id=20786

          Issue ID: 20786
           Summary: do attribute inference for all nested functions
           Product: D
           Version: D2
          Hardware: All
                OS: All
            Status: NEW
          Severity: enhancement
          Priority: P1
         Component: dmd
          Assignee: nobody at puremagic.com
          Reporter: schveiguy at yahoo.com

All nested functions have available source for the compiler, so there is no
reason not to infer attributes.

This already happens inside @safe functions, it makes no sense for it not to
happen for all nested functions.

Note the post from Walter here:
https://forum.dlang.org/post/r75q88$182b$1@digitalmars.com

Also, this is related to issue 13567, but it's slightly different, and there is
better precedent.

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