diff options
| author | Rich Felker <dalias@aerifal.cx> | 2019-10-13 17:21:36 -0400 |
|---|---|---|
| committer | Rich Felker <dalias@aerifal.cx> | 2019-10-13 17:21:36 -0400 |
| commit | 716745e00e304a650a8eef57c15fbd326168096e (patch) | |
| tree | 97d03a73a95aea07aad13e79dda469ddaca4dd73 /src/stdio/vwscanf.c | |
| parent | db3cc9a319c788cf5241ea68d3fa86b43f35733e (diff) | |
| download | musl-716745e00e304a650a8eef57c15fbd326168096e.tar.gz musl-716745e00e304a650a8eef57c15fbd326168096e.tar.xz musl-716745e00e304a650a8eef57c15fbd326168096e.zip | |
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/stdio/vwscanf.c')
0 files changed, 0 insertions, 0 deletions