518   if (FID.isInvalid())  in getPreviousFileID()
538   if (FID.isInvalid())  in getNextFileID()
1042     if (!PrevFID.isInvalid()) {  in isAtStartOfImmediateMacroExpansion()
1077     if (!NextFID.isInvalid()) {  in isAtEndOfImmediateMacroExpansion()
1163 static bool isInvalid(SourceLocation Loc, bool *Invalid) {  in isInvalid()  function
1164   bool MyInvalid = Loc.isInvalid();  in isInvalid()
1172   if (isInvalid(Loc, Invalid)) return 0;  in getSpellingColumnNumber()
1179   if (isInvalid(Loc, Invalid)) return 0;  in getExpansionColumnNumber()
1186   if (isInvalid(Loc, Invalid)) return 0;  in getPresumedColumnNumber()
1285   if (FID.isInvalid()) {  in getLineNumber()
1379   if (isInvalid(Loc, Invalid)) return 0;  in getSpellingLineNumber()
1385   if (isInvalid(Loc, Invalid)) return 0;  in getExpansionLineNumber()
1391   if (isInvalid(Loc, Invalid)) return 0;  in getPresumedLineNumber()
1436   if (isInvalid(Loc, Invalid)) return "<invalid loc>";  in getBufferName()
1451   if (Loc.isInvalid()) return PresumedLoc();  in getPresumedLoc()
1521   if (Loc.isInvalid()) return false;  in isInMainFile()
1540   return FI.getIncludeLoc().isInvalid();  in isInMainFile()
1644   if (FirstFID.isInvalid()) {  in translateFile()
1661     if (FirstFID.isInvalid()) {  in translateFile()
1677   if (FirstFID.isInvalid() &&  in translateFile()
1722   if (FID.isInvalid())  in translateLineCol()
1808       if (IncludeLoc.isInvalid())  in computeMacroArgsCache()
1928   if (Loc.isInvalid() || !Loc.isFileID())  in getMacroArgExpandedLocation()
1934   if (FID.isInvalid())  in getMacroArgExpandedLocation()
1955   if (FID.isInvalid())  in getDecomposedIncludedLoc()
1991   if (UpperLoc.first.isInvalid())  in MoveUpIncludeHierarchy()
2039   if (LOffs.first.isInvalid() || ROffs.first.isInvalid())  in isBeforeInTranslationUnit()
2040     return LOffs.first.isInvalid() && !ROffs.first.isInvalid();  in isBeforeInTranslationUnit()