[llvm-bugs] [Bug 33609] New: Incorrect error with -E -CC and comments in macro parameters

[via llvm-bugs]

https://bugs.llvm.org/show_bug.cgi?id=33609

            Bug ID: 33609
           Summary: Incorrect error with -E -CC and comments in macro
                    parameters
           Product: clang
           Version: 4.0
          Hardware: PC
                OS: Linux
            Status: NEW
          Severity: enhancement
          Priority: P
         Component: -New Bugs
          Assignee: unassignedclangbugs at nondot.org
          Reporter: jonathanmueller.dev at gmail.com
                CC: llvm-bugs at lists.llvm.org

Given the following file:

#define FOO(a /* comment */)

Preprocessing it with `clang++ -E -CC file.cpp` yields the following error:

file.cpp:1:15: error: expected comma in macro parameter list

GCC with the same flags accepts the code.

The problem here seems to be that the -CC option doesn't skip any comments
which leads to this error while GCC does skip them.

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