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| author | Aram Hăvărneanu <aram@mgk.ro> | 2014-05-30 12:28:01 +0200 |
|---|---|---|
| committer | Aram Hăvărneanu <aram@mgk.ro> | 2014-05-30 12:28:01 +0200 |
| commit | bf0d5c8abbe9d4e3a145df29bee8ef2758d01884 (patch) | |
| tree | 19a0ae52aab138503e959b78be3f1ed89bd72fc0 /lib/cmap/doom | |
| parent | 17d0dea87c80203aaf0199cb33dea0afc4a7f956 (diff) | |
| download | plan9front-bf0d5c8abbe9d4e3a145df29bee8ef2758d01884.tar.xz | |
6a, 6c, 6l: fix copy propagation
Without an explicit signal for a truncation, copy propagation will
sometimes propagate a 32-bit truncation and end up overwriting uses of
the original 64-bit value.
This was independently discovered and fixed in Go. See:
http://golang.org/issue/1315
https://codereview.appspot.com/6002043/
Thanks Charles Forsyth for tips and advice.
Diffstat (limited to 'lib/cmap/doom')
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