[LLVMdev] changes to raw_fd_ostream

Ryan Taylor ryta1203 at gmail.com
Mon Oct 29 15:21:10 PDT 2012

So I did a clean checkout and build and still have this issue, did
something changed with the way/when it's getting flushed? My old revision
did not have this issue, this is an issue strictly with LLVM it seems.

On Fri, Oct 26, 2012 at 3:27 PM, Ryan Taylor <ryta1203 at gmail.com> wrote:

> It looks like some kind of file IO buffer overflow. I'm not dumping any
> long strings at one time, but I am keeping the file open for the entire
> run. I've yet to find a correlation to other C files.
> On Fri, Oct 26, 2012 at 3:17 PM, Ryan Taylor <ryta1203 at gmail.com> wrote:
>> I'm getting seemingly odd SegFaults  when writing out using a
>> raw_fd_ostream in the current trunk (last version worked, believe it was
>> 153818, or similar). Again, nothing in the release notes... should I be
>> scanning the svn log?
>> For example, I have something like:
>> raw_fd_ostream fout("out.txt", errorStr="");
>> ....
>> fout<<"Hello World, how are you!"\n";
>> and it'll write out to the file, "Hello Wor" and then seg fault without
>> assert.
>> Sadly, this only happens for certain C code, any idea why this might be
>> occuring?
>> Also, during build I get a lot of these warnings:llvm/ADT/DenseMap.h: In
>> copy constructor ‘llvm::DenseMap<KeyT, ValueT, KeyInfoT>::DenseMap(const
>> llvm::DenseMap<KeyT, ValueT, KeyInfoT>&) [with KeyT = unsigned int, ValueT
>> = llvm::PointerAlignElem, KeyInfoT = llvm::DenseMapInfo<unsigned int>]’:
>> I'm guessing I messed up when updating somehow? I just used gmake update.
>> Thanks.
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