================
@@ -1117,6 +1118,26 @@ NumericLiteralParser::NumericLiteralParser(StringRef
TokSpelling,
if (isImaginary) break; // Cannot be repeated.
isImaginary = true;
continue; // Success.
+ case '_':
+ if (isFPConstant)
+ break; // Invalid for floats
+ if (HasSize)
+ break;
+ if (PossibleBitInt)
+ break; // Cannot be repeated.
+ if (LangOpts.CPlusPlus && s + 1 < ThisTokEnd && s[1] == '_') {
+ // Scan ahead to find possible rest of BitInt suffix
+ for (const char *c = s; c != ThisTokEnd; ++c) {
+ if (*c == 'w' || *c == 'W') {
----------------
erichkeane wrote:
I think we're probably better off consuming all of the __wb/__uwb here rather
than falling through to the code on ~1151.
https://github.com/llvm/llvm-project/pull/86586
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