https://issues.dlang.org/show_bug.cgi?id=19014

          Issue ID: 19014
           Summary: Compiler imports symbols that aren't actually
                    imported.
           Product: D
           Version: D2
          Hardware: All
                OS: All
            Status: NEW
          Severity: normal
          Priority: P1
         Component: dmd
          Assignee: nobody@puremagic.com
          Reporter: slavo5150@yahoo.com

The following code works as expected:

--- Example 1
void main()
{
    if (true)
    {
        static import core.stdc.math;
    }
    static assert(!__traits(compiles, core.stdc.math.cos(0)));
}
---

The following code does not work as expected:

--- Example 2
import core.stdc.config;

void main()
{
    if (true)
    {
        static import core.stdc.math;
    }
    static assert(!__traits(compiles, core.stdc.math.cos(0)));
}
---

When importing `core.stdc.config` it also appears to import `core.stdc.math` although `core.stdc.config` does not import anything.

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