Rui Ueyama 5908845a7e Fix a UBsan bot. ...

If we do not initialize Prefix here, Prefix.data() returns a nullptr.
Later, it is passed to memcpy. memcpy's behavior is undefined if src (or
dst) is a nullptr even if a given size is 0. That's why this code
triggered UBsan.

llvm-svn: 314368

2017-09-28 00:27:39 +00:00

6.4 KiB

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