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| author | Eric W. Biederman <ebiederm@xmission.com> | 2006-03-23 11:59:35 +0100 |
|---|---|---|
| committer | Linus Torvalds <torvalds@g5.osdl.org> | 2006-03-23 16:38:04 +0100 |
| commit | 30e931d4092713cecd6b8c2fd70f268efaa6e428 (patch) | |
| tree | e7425d6e23720399d4f1a3078e63e03d62ca1d63 /arch | |
| parent | [PATCH] i386: allow disabling X86_FEATURE_SEP at boot (diff) | |
| download | linux-30e931d4092713cecd6b8c2fd70f268efaa6e428.tar.xz linux-30e931d4092713cecd6b8c2fd70f268efaa6e428.zip | |
[PATCH] i386: Add a temporary to make put_user more type safe
In some code I am developing I had occasion to change the type of a
variable. This made the value put_user was putting to user space wrong.
But the code continued to build cleanly without errors.
Introducing a temporary fixes this problem and at least with gcc-3.3.5 does
not cause gcc any problems with optimizing out the temporary. gcc-4.x
using SSA internally ought to be even better at optimizing out temporaries,
so I don't expect a temporary to become a problem. Especially because in
all correct cases the types on both sides of the assignment to the
temporary are the same.
Signed-off-by: Eric W. Biederman <ebiederm@xmission.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'arch')
0 files changed, 0 insertions, 0 deletions