blob: 9a8c6028fd9e6c7274ce8a00d919a4821298a4a0 (
plain)
diff --git a/lib/Support/MemoryBuffer.cpp b/lib/Support/MemoryBuffer.cpp
index 85e782b2c04..95f10753d96 100644
--- a/lib/Support/MemoryBuffer.cpp
+++ b/lib/Support/MemoryBuffer.cpp
@@ -284,6 +284,11 @@ static bool shouldUseMmap(int FD,
bool RequiresNullTerminator,
int PageSize,
bool IsVolatile) {
+#ifdef _WIN32
+ // Do not use mmap on Windows in order to avoid file locking
+ return false;
+#endif
+
// mmap may leave the buffer without null terminator if the file size changed
// by the time the last page is mapped in, so avoid it if the file size is
// likely to change.
|