[libc-commits] [libc] [libc] Fixing float128 UB error (PR #211593)
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Tue Jul 28 13:49:39 PDT 2026
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``````````bash
git-clang-format --diff origin/main HEAD --extensions cpp,h -- libc/src/__support/FPUtil/dyadic_float.h libc/src/__support/FPUtil/float128.h libc/test/src/__support/FPUtil/float128_test.cpp --diff_from_common_commit
``````````
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``````````diff
diff --git a/libc/src/__support/FPUtil/dyadic_float.h b/libc/src/__support/FPUtil/dyadic_float.h
index cce6b0c34..dfa5d15bc 100644
--- a/libc/src/__support/FPUtil/dyadic_float.h
+++ b/libc/src/__support/FPUtil/dyadic_float.h
@@ -472,7 +472,8 @@ template <size_t Bits> struct DyadicFloat {
// exponents coming in to this function _shouldn't_ be that large). The
// result should always end up as a positive size_t.
size_t exp = -static_cast<size_t>(exponent);
- size_t limit = static_cast<size_t>(cpp::numeric_limits<MantissaType>::digits);
+ size_t limit =
+ static_cast<size_t>(cpp::numeric_limits<MantissaType>::digits);
size_t shift = neg_exp < limit ? exp : limit;
new_mant >>= shift;
``````````
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https://github.com/llvm/llvm-project/pull/211593
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