diff options
Diffstat (limited to 'lib/Lex/PPExpressions.cpp')
| -rw-r--r-- | lib/Lex/PPExpressions.cpp | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/lib/Lex/PPExpressions.cpp b/lib/Lex/PPExpressions.cpp index 49f4cbf71a..27ad7b4a1b 100644 --- a/lib/Lex/PPExpressions.cpp +++ b/lib/Lex/PPExpressions.cpp @@ -24,6 +24,7 @@ #include "clang/Lex/MacroInfo.h" #include "llvm/ADT/APSInt.h" #include "llvm/Support/ErrorHandling.h" +#include "llvm/Support/SaveAndRestore.h" using namespace clang; namespace { @@ -730,6 +731,7 @@ static bool EvaluateDirectiveSubExpr(PPValue &LHS, unsigned MinPrec, /// to "!defined(X)" return X in IfNDefMacro. bool Preprocessor:: EvaluateDirectiveExpression(IdentifierInfo *&IfNDefMacro) { + SaveAndRestore<bool> PPDir(ParsingIfOrElifDirective, true); // Save the current state of 'DisableMacroExpansion' and reset it to false. If // 'DisableMacroExpansion' is true, then we must be in a macro argument list // in which case a directive is undefined behavior. We want macros to be able |