diff options
Diffstat (limited to 'clang/lib/Lex/Lexer.cpp')
| -rw-r--r-- | clang/lib/Lex/Lexer.cpp | 5 |
1 files changed, 3 insertions, 2 deletions
diff --git a/clang/lib/Lex/Lexer.cpp b/clang/lib/Lex/Lexer.cpp index d0e38a42473..52146d70335 100644 --- a/clang/lib/Lex/Lexer.cpp +++ b/clang/lib/Lex/Lexer.cpp @@ -1607,14 +1607,15 @@ bool Lexer::LexNumericConstant(Token &Result, const char *CurPtr) { // If we have a hex FP constant, continue. if ((C == '-' || C == '+') && (PrevCh == 'P' || PrevCh == 'p')) { - // Outside C99, we accept hexadecimal floating point numbers as a + // Outside C99 and C++17, we accept hexadecimal floating point numbers as a // not-quite-conforming extension. Only do so if this looks like it's // actually meant to be a hexfloat, and not if it has a ud-suffix. bool IsHexFloat = true; if (!LangOpts.C99) { if (!isHexaLiteral(BufferPtr, LangOpts)) IsHexFloat = false; - else if (std::find(BufferPtr, CurPtr, '_') != CurPtr) + else if (!getLangOpts().CPlusPlus1z && + std::find(BufferPtr, CurPtr, '_') != CurPtr) IsHexFloat = false; } if (IsHexFloat) |
