[llvm-dev] Race condition in raw_ostream

[Friedman, Eli via llvm-dev]

On 12/7/2016 10:27 AM, Viacheslav Nikolaev via llvm-dev wrote:
> > I believe it’ll always forward directly to 
> raw_fd_ostream::write_impl(), which is calling the libc ::write().
>
> Do you mean raw_fd_ostream somehow overrides the operator<< the code 
> for which I extracted?
> I cannot see if that is so. And I really saw it didn't albeit in a 
> very old master.

dbgs() is unbuffered, so the condition "Size > (size_t)(OutBufEnd - 
OutBufCur)" is always true.

-Eli

-- 
Employee of Qualcomm Innovation Center, Inc.
Qualcomm Innovation Center, Inc. is a member of Code Aurora Forum, a Linux Foundation Collaborative Project

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