Add a sanity check in MemoryBuffer::getOpenFile() to make sure we don't hang
if the passed in FileSize is inaccurate.
rdar://11034179
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@152662 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Support/MemoryBuffer.cpp b/lib/Support/MemoryBuffer.cpp
index 4b15587..911a03f 100644
--- a/lib/Support/MemoryBuffer.cpp
+++ b/lib/Support/MemoryBuffer.cpp
@@ -336,7 +336,11 @@
// Error while reading.
return error_code(errno, posix_category());
}
- assert(NumRead != 0 && "fstat reported an invalid file size.");
+ if (NumRead == 0) {
+ assert(0 && "We got inaccurate FileSize value or fstat reported an "
+ "invalid file size.");
+ break;
+ }
BytesLeft -= NumRead;
BufPtr += NumRead;
}