https://issues.dlang.org/show_bug.cgi?id=24507

          Issue ID: 24507
           Summary: Do not call preprocessor with normalization checks
                    turned on
           Product: D
           Version: D2
          Hardware: All
                OS: All
            Status: NEW
          Severity: normal
          Priority: P1
         Component: dmd
          Assignee: nobody@puremagic.com
          Reporter: alphaglosined@gmail.com

When ImportC calls the preprocessor, it should not validate against any normalization form.

Currently, only GCC does implement this check ``-Wnormalized``.

This prevents ImportC from controlling what to do when an identifier is not in normalization form C. Including the prevention of normalization.

The tests for ImportC for normalization ``normalize_silent.c`` and ``normalize_error.c`` which I am in the process of adding have to be disabled on platforms that use GCC.

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