04677a42a3
[libc++] Add `__truncating_cast` for safely casting float types to integers This is needed anytime we need to clamp an arbitrary floating point value to an integer type. Thanks to Eric Fiselier for the patch. Differential Revision: https://reviews.llvm.org/D66836 llvm-svn: 370891 Merge commit b92deded8 from llvm git (by Louis Dionne): [libc++] Move __clamp_to_integral to <cmath>, and harden against min()/max() macros llvm-svn: 370900 Merge commit 0ec6a4882 from llvm git (by Louis Dionne): [libc++] Fix potential OOB in poisson_distribution See details in the original Chromium bug report: https://bugs.chromium.org/p/chromium/issues/detail?id=994957 Together, these fix a security issue in libc++'s implementation of std::poisson_distribution, which can be exploited to read data which is out of bounds. Note there are no programs in the FreeBSD base system that use std::poisson_distribution, so this is only a possible issue for ports and external programs which have been built against libc++. Therefore, I am bumping __FreeBSD_version for the benefit of our port maintainers. Requested by: emaste Security: potential OOB read MFC after: 3 days |
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