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authorRich Felker <dalias@aerifal.cx>2015-06-13 05:17:16 +0000
committerRich Felker <dalias@aerifal.cx>2015-06-13 05:17:16 +0000
commit536c6d5a4205e2a3f161f2983ce1e0ac3082187d (patch)
treea45cf47d93d62585cd417b83bd49100edf419222 /src/ipc/semget.c
parentf8f565df467c13248104223f99abf7f37cef7584 (diff)
downloadmusl-536c6d5a4205e2a3f161f2983ce1e0ac3082187d.tar.gz
fix idiom for setting stdio stream orientation to wide
the old idiom, f->mode |= f->mode+1, was adapted from the idiom for setting byte orientation, f->mode |= f->mode-1, but the adaptation was incorrect. unless the stream was alreasdy set byte-oriented, this code incremented f->mode each time it was executed, which would eventually lead to overflow. it could be fixed by changing it to f->mode |= 1, but upcoming changes will require slightly more work at the time of wide orientation, so it makes sense to just call fwide. as an optimization in the single-character functions, fwide is only called if the stream is not already wide-oriented.
Diffstat (limited to 'src/ipc/semget.c')
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