enable digraphs for C94, thanks to Neil for pointing this out.

llvm-svn: 47543

2 files changed, 3 insertions, 2 deletions

diff --git a/clang/Driver/clang.cpp b/clang/Driver/clang.cpp
index 89e0bad4d0f..fa0c9fc43fc 100644
--- a/clang/Driver/clang.cpp
+++ b/clang/Driver/clang.cpp
@@ -369,7 +369,6 @@ static void InitializeLanguageStandard(LangOptions &Options, LangKind LK) {
     // FALL THROUGH.
   case lang_gnu99:
   case lang_c99:
-    Options.Digraphs = 1;
     Options.C99 = 1;
     Options.HexFloats = 1;
     // FALL THROUGH.
@@ -377,6 +376,8 @@ static void InitializeLanguageStandard(LangOptions &Options, LangKind LK) {
     Options.BCPLComment = 1;  // Only for C99/C++.
     // FALL THROUGH.
   case lang_c94:
+    Options.Digraphs = 1;     // C94, C99, C++.
+    // FALL THROUGH.
   case lang_c89:
     break;
   }
diff --git a/clang/include/clang/Basic/LangOptions.h b/clang/include/clang/Basic/LangOptions.h
index 1c4dac315e8..bee0b51ab2f 100644
--- a/clang/include/clang/Basic/LangOptions.h
+++ b/clang/include/clang/Basic/LangOptions.h
@@ -24,7 +24,7 @@ struct LangOptions {
   unsigned Trigraphs         : 1;  // Trigraphs in source files.
   unsigned BCPLComment       : 1;  // BCPL-style // comments.
   unsigned DollarIdents      : 1;  // '$' allowed in identifiers.
-  unsigned Digraphs          : 1;  // C++ and C99
+  unsigned Digraphs          : 1;  // C94, C99 and C++
   unsigned HexFloats         : 1;  // C99 Hexadecimal float constants.
   unsigned C99               : 1;  // C99 Support
   unsigned Microsoft         : 1;  // Microsoft extensions.