[llvm-bugs] [Bug 49349] New: [OpenCL] incorrect strict-prototypes warnings

[via llvm-bugs]

https://bugs.llvm.org/show_bug.cgi?id=49349

            Bug ID: 49349
           Summary: [OpenCL] incorrect strict-prototypes warnings
           Product: clang
           Version: trunk
          Hardware: All
                OS: All
            Status: NEW
          Severity: enhancement
          Priority: P
         Component: OpenCL
          Assignee: unassignedclangbugs at nondot.org
          Reporter: marco.antognini at arm.com
                CC: anastasia.stulova at arm.com, llvm-bugs at lists.llvm.org

This code

    void foo();

results in the following warning under -Wstrict-prototypes:

    warning: this function declaration is not a prototype [-Wstrict-prototypes]

https://godbolt.org/z/zvfjGG

This is incorrect according to the OpenCL specification:

https://www.khronos.org/registry/OpenCL/specs/3.0-unified/html/OpenCL_C.html#restrictions

If a list of parameters in a function declaration is empty, the function takes
no arguments. This is due to the above restriction on variadic functions.

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