Fix debug info crashes for PIC16.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@88761 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Target/PIC16/PIC16DebugInfo.cpp b/lib/Target/PIC16/PIC16DebugInfo.cpp
index 0ed44d2..49df457 100644
--- a/lib/Target/PIC16/PIC16DebugInfo.cpp
+++ b/lib/Target/PIC16/PIC16DebugInfo.cpp
@@ -467,12 +467,18 @@
void PIC16DbgInfo::SwitchToCU(MDNode *CU) {
// Get the file path from CU.
DICompileUnit cu(CU);
- std::string DirName = cu.getDirectory();
- std::string FileName = cu.getFilename();
- std::string FilePath = DirName + "/" + FileName;
+ std::string FilePath = "";
+ if (cu.getDirectory()) {
+ std::string DirName = cu.getDirectory();
+ FilePath = FilePath + DirName + "/";
+ }
+ if (cu.getFilename()) {
+ std::string FileName = cu.getFilename();
+ FilePath = FilePath + FileName;
+ }
- // Nothing to do if source file is still same.
- if ( FilePath == CurFile ) return;
+ // Nothing to do if source file is still same or it is empty.
+ if ( FilePath == CurFile || FilePath == "") return;
// Else, close the current one and start a new.
if (CurFile != "") O << "\n\t.eof";