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add a new LangOptions::GNUMode bit to distinguish between GNU99 and C99 etc. 

llvm-svn: 67374
This commit is contained in:
Chris Lattner 2009-03-20 15:44:26 +00:00
parent 4655d731e1
commit 91d63d1248
2 changed files with 9 additions and 5 deletions
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11
clang/Driver/clang.cpp
View File

@ -622,9 +622,12 @@ static void InitializeLanguageStandard(LangOptions &Options, LangKind LK,
break;
}
// GNUMode - Set if we're in gnu99, gnu89, gnucxx98, etc.
Options.GNUMode = LangStd >= lang_gnu_START;
if (Options.CPlusPlus) {
Options.C99 = 0;
Options.HexFloats = (LangStd == lang_gnucxx98 || LangStd==lang_gnucxx0x);
Options.HexFloats = Options.GNUMode;
}
if (LangStd == lang_c89 || LangStd == lang_c94 || LangStd == lang_gnu89)
@ -634,15 +637,15 @@ static void InitializeLanguageStandard(LangOptions &Options, LangKind LK,
// Mimicing gcc's behavior, trigraphs are only enabled if -trigraphs or -ansi
// is specified, or -std is set to a conforming mode.
Options.Trigraphs = LangStd < lang_gnu_START;
Options.Trigraphs = !Options.GNUMode;
if (Trigraphs.getPosition())
Options.Trigraphs = Trigraphs; // Command line option wins.
Options.Trigraphs = Trigraphs; // Command line option wins if specified.
// If in a conformant language mode (e.g. -std=c99) Blocks defaults to off
// even if they are normally on for the target. In GNU modes (e.g.
// -std=gnu99) the default for blocks depends on the target settings.
// However, blocks are not turned off when compiling Obj-C or Obj-C++ code.
if (!Options.ObjC1 && LangStd < lang_gnu_START)
if (!Options.ObjC1 && !Options.GNUMode)
Options.Blocks = 0;
// Never accept '$' in identifiers when preprocessing assembler.

3
clang/include/clang/Basic/LangOptions.h
View File

@ -26,6 +26,7 @@ public:
unsigned BCPLComment : 1; // BCPL-style '//' comments.
unsigned DollarIdents : 1; // '$' allowed in identifiers.
unsigned AsmPreprocessor : 1; // Preprocessor in asm mode.
unsigned GNUMode : 1; // True in gnu99 mode false in c99 mode (etc)
unsigned ImplicitInt : 1; // C89 implicit 'int'.
unsigned Digraphs : 1; // C94, C99 and C++
unsigned HexFloats : 1; // C99 Hexadecimal float constants.
@ -71,7 +72,7 @@ public:
LangOptions() {
Trigraphs = BCPLComment = DollarIdents = AsmPreprocessor = 0;
ImplicitInt = Digraphs = 0;
GNUMode = ImplicitInt = Digraphs = 0;
HexFloats = 0;
GC = ObjC1 = ObjC2 = ObjCNonFragileABI = 0;
C99 = Microsoft = CPlusPlus = CPlusPlus0x = NoExtensions = 0;