Copyright of /cfe/lib/headers


what's the copyright status of /cfe/lib/headers ? Each file
starts with the MIT license block comment as shown here:

except that the copyright notice (referred to in the text as
"the above copyright notice") is missing. Did all the files
originate with the LLVM project?


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Yes, they all originated with the LLVM project. They are copyright whoever contributed them and under the MIT license.