For debug information, get the main file name from the source manager
rather than from the -main-file-name flag, since the source manager
has proper path information. Fixes <rdar://problem/7769538>.
llvm-svn: 98898
diff --git a/clang/lib/CodeGen/CGDebugInfo.cpp b/clang/lib/CodeGen/CGDebugInfo.cpp
index 60aa4e7..323c458 100644
--- a/clang/lib/CodeGen/CGDebugInfo.cpp
+++ b/clang/lib/CodeGen/CGDebugInfo.cpp
@@ -104,9 +104,14 @@
void CGDebugInfo::CreateCompileUnit() {
// Get absolute path name.
- std::string MainFileName = CGM.getCodeGenOpts().MainFileName;
- if (MainFileName.empty())
+ SourceManager &SM = CGM.getContext().getSourceManager();
+ std::string MainFileName;
+ if (const FileEntry *MainFile = SM.getFileEntryForID(SM.getMainFileID()))
+ MainFileName = MainFile->getName();
+ else if (CGM.getCodeGenOpts().MainFileName.empty())
MainFileName = "<unknown>";
+ else
+ MainFileName = CGM.getCodeGenOpts().MainFileName;
llvm::sys::Path AbsFileName(MainFileName);
AbsFileName.makeAbsolute();