[Issue 22343] New: importC: Error: 'undefined identifier' with implicit declaration of function

[d-bugmail at puremagic.com]

https://issues.dlang.org/show_bug.cgi?id=22343

          Issue ID: 22343
           Summary: importC: Error: 'undefined identifier' with implicit
                    declaration of function
           Product: D
           Version: D2
          Hardware: All
                OS: All
            Status: NEW
          Severity: major
          Priority: P1
         Component: dmd
          Assignee: nobody at puremagic.com
          Reporter: ibuclaw at gdcproject.org

Similar to issue 22342, functions can be implicitly declared in C11, and will
have default function type `int(...)`.
---
int main()
{
    func(12);
    func("12");
    func(1.2);
    return 0;
}

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