Zachary Turner acd8791c26 Call FlushFileBuffers on output files. ...

There is a latent Windows kernel bug, the exact trigger
conditions are not well understood, which can cause a file
to be correctly written, but unable to be correctly read.

The workaround appears to be simply calling FlushFileBuffers.

Differential Revision: https://reviews.llvm.org/D42925

llvm-svn: 325274

2018-02-15 18:36:10 +00:00

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