diff options
| -rw-r--r-- | clang/lib/Frontend/InitPreprocessor.cpp | 7 |
1 files changed, 4 insertions, 3 deletions
diff --git a/clang/lib/Frontend/InitPreprocessor.cpp b/clang/lib/Frontend/InitPreprocessor.cpp index 9990fc42ba1..e5a4169502d 100644 --- a/clang/lib/Frontend/InitPreprocessor.cpp +++ b/clang/lib/Frontend/InitPreprocessor.cpp @@ -169,9 +169,10 @@ static void DefineTypeSize(llvm::StringRef MacroName, unsigned TypeWidth, llvm::StringRef ValSuffix, bool isSigned, MacroBuilder& Builder) { long long MaxVal; - if (isSigned) - MaxVal = (1LL << (TypeWidth - 1)) - 1; - else + if (isSigned) { + assert(TypeWidth != 1); + MaxVal = ~0ULL >> (65-TypeWidth); + } else MaxVal = ~0LL >> (64-TypeWidth); Builder.defineMacro(MacroName, llvm::Twine(MaxVal) + ValSuffix); |
