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authordim <dim@FreeBSD.org>2018-01-01 20:39:12 +0000
committerLuiz Souza <luiz@netgate.com>2018-02-21 15:19:51 -0300
commitb042831d7b39460b5b04220cf450867d9dabe394 (patch)
treea069324f1d6fa199f420edbc0ecd3a579e89c906 /contrib/libc++/src/ios.cpp
parent7f33f93bf2f7c20161a5486c2d80c28c6152969a (diff)
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MFC r327164:
Fix clang 6.0.0 compiler warnings in binutils Latest clang git has a warning -Wnull-pointer-arithmetic which will trigger a -Werror failure. Addition and subtraction from a null pointer is undefined behaviour and could be optimized into anything. Furthermore, using the difference between two pointers and casting the result back to a pointer is not portable since the size of ptrdiff_t does not necessary have to be the same as size of void* (this happens e.g. on CHERI). Using intptr_t instead fixes this portability issue and the compiler warning. Submitted by; Alexander Richardson Obtained from: CheriBSD Differential Revision: https://reviews.freebsd.org/D12928 (cherry picked from commit 0cd25a0c5807abc3eb947abf62bc29f95037eba2)
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