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authorRich Felker <dalias@aerifal.cx>2019-10-13 17:21:36 -0400
committerRich Felker <dalias@aerifal.cx>2019-10-13 17:21:36 -0400
commit716745e00e304a650a8eef57c15fbd326168096e (patch)
tree97d03a73a95aea07aad13e79dda469ddaca4dd73 /src/math/log_data.h
parentdb3cc9a319c788cf5241ea68d3fa86b43f35733e (diff)
downloadmusl-716745e00e304a650a8eef57c15fbd326168096e.tar.gz
fix aliasing-based undefined behavior in mbsrtowcs
mbsrtowcs contains "vectorized" loops to quickly step over bytes without the high bit set; these have undefined behavior by virtue of aliasing uint32_t over top of char data for the accesses. commit 4d0a82170a25464c39522d7190b9fe302045ddb2 fixed the corresponding usage in string functions by using the may_alias attribute conditional on __GNUC__ and disabled the vectorized code in its absence. do the same for mbsrtowcs.
Diffstat (limited to 'src/math/log_data.h')
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