| commit | 3039eee3049c14f6dc803a9bf490b8ee9bb8ec04 | |
| author | Olly Betts <olly@survex.com> | |
| Sat, 17 Dec 2016 07:42:27 +0000 (17 20:42 +1300) | ||
| committer | Olly Betts <olly@survex.com> | |
| Mon, 19 Dec 2016 00:42:19 +0000 (19 13:42 +1300) | ||
| tree | 754b98692fa43348b8cbe19b6ec90d8a6b30a910 | treesnapshot (tar.gz zip) |
| parent | 74f31bb87b4b1a4dcc9ba00401e808612f65325a | commitdiff |
Check signed right shift behaviour at compile time
We can use a test on a constant expression which should optimise away to
just the required version of the code, which means that on platforms
which perform sign-extension (pretty much everything current it seems)
we don't have to rely on the compiler optimising a portable idiom
correctly.
(cherry picked from commit f08e5fb4637a46a15d83f8584d5eed44ee3e072f)
We can use a test on a constant expression which should optimise away to
just the required version of the code, which means that on platforms
which perform sign-extension (pretty much everything current it seems)
we don't have to rely on the compiler optimising a portable idiom
correctly.
(cherry picked from commit f08e5fb4637a46a15d83f8584d5eed44ee3e072f)
| xapian-core/include/xapian/unicode.h | diffblobblamehistory |