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Make this code more robust by not thinking we are making progress

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if zero bytes were read.

llvm-svn: 85922
This commit is contained in:
Duncan Sands 2009-11-03 19:10:22 +00:00
parent 5b0aaf3a1f
commit d4b8f9ee93
1 changed files with 1 additions and 1 deletions
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2
lib/Support/MemoryBuffer.cpp
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@ -226,7 +226,7 @@ MemoryBuffer *MemoryBuffer::getFile(const char *Filename, std::string *ErrStr,
size_t BytesLeft = FileSize; size_t BytesLeft = FileSize;
while (BytesLeft) { while (BytesLeft) {
ssize_t NumRead = ::read(FD, BufPtr, BytesLeft); ssize_t NumRead = ::read(FD, BufPtr, BytesLeft);
if (NumRead != -1) { if (NumRead > 0) {
BytesLeft -= NumRead; BytesLeft -= NumRead;
BufPtr += NumRead; BufPtr += NumRead;
} else if (errno == EINTR) { } else if (errno == EINTR) {