Add hack to SourceManager to support missing source files during
deserialization. Eventually this should be replaced with a lazy-reading
mechanism that only reads source files when they are needed by clients.
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@45007 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/Basic/SourceManager.cpp b/Basic/SourceManager.cpp
index bfa7792..22a7cf5 100644
--- a/Basic/SourceManager.cpp
+++ b/Basic/SourceManager.cpp
@@ -441,10 +441,14 @@
const char* start = &Buf[0];
const FileEntry* E = FMgr->getFile(start,start+Buf.size());
- assert (E && "Not yet supported: missing files.");
-
- // Get the ContextCache object and register it with the deserializer.
- D.RegisterPtr(PtrID,SMgr.getContentCache(E));
+ // FIXME: Ideally we want a lazy materialization of the ContentCache
+ // anyway, because we don't want to read in source files unless this
+ // is absolutely needed.
+ if (!E)
+ D.RegisterPtr(PtrID,NULL);
+ else
+ // Get the ContextCache object and register it with the deserializer.
+ D.RegisterPtr(PtrID,SMgr.getContentCache(E));
}
else {
// Register the ContextCache object with the deserializer.