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author | Jonathan Nieder <jrnieder@gmail.com> | 2010-10-10 21:59:26 -0500 |
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committer | Junio C Hamano <gitster@pobox.com> | 2011-02-10 13:47:56 -0800 |
commit | 1368f65002bf39fdde7dd736a75ae35475184371 (patch) | |
tree | cb0d57165c5b1f710bb5e6499fa322185a8deb2f /t/t5513-fetch-track.sh | |
parent | Merge branch 'maint-1.7.0' into maint (diff) | |
download | tgif-1368f65002bf39fdde7dd736a75ae35475184371.tar.xz |
compat: helper for detecting unsigned overflow
The idiom (a + b < a) works fine for detecting that an unsigned
integer has overflowed, but a more explicit
unsigned_add_overflows(a, b)
might be easier to read.
Define such a macro, expanding roughly to ((a) < UINT_MAX - (b)).
Because the expansion uses each argument only once outside of sizeof()
expressions, it is safe to use with arguments that have side effects.
Signed-off-by: Jonathan Nieder <jrnieder@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Diffstat (limited to 't/t5513-fetch-track.sh')
0 files changed, 0 insertions, 0 deletions