add a MemoryBuffer::getOpenFile method, which turns an open
file descriptor into a MemoryBuffer (and closes the FD).
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@120065 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Support/MemoryBuffer.cpp b/lib/Support/MemoryBuffer.cpp
index da46853..5b701a5 100644
--- a/lib/Support/MemoryBuffer.cpp
+++ b/lib/Support/MemoryBuffer.cpp
@@ -187,6 +187,7 @@
MemoryBuffer *MemoryBuffer::getFile(StringRef Filename, std::string *ErrStr,
int64_t FileSize) {
+ // Ensure the path is null terminated.
SmallString<256> PathBuf(Filename.begin(), Filename.end());
return MemoryBuffer::getFile(PathBuf.c_str(), ErrStr, FileSize);
}
@@ -202,6 +203,12 @@
if (ErrStr) *ErrStr = sys::StrError();
return 0;
}
+
+ return getOpenFile(FD, Filename, ErrStr, FileSize);
+}
+
+MemoryBuffer *MemoryBuffer::getOpenFile(int FD, const char *Filename,
+ std::string *ErrStr, int64_t FileSize) {
FileCloser FC(FD); // Close FD on return.
// If we don't know the file size, use fstat to find out. fstat on an open