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author | René Scharfe <l.s.r@web.de> | 2016-09-29 17:23:43 +0200 |
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committer | Junio C Hamano <gitster@pobox.com> | 2016-09-29 15:42:18 -0700 |
commit | dbc540c7a5827529a3f58befc9e5b81a31ec8fab (patch) | |
tree | cd2c485c62e68411e418616c6ca26923e24b3e1b /t/t4211/expect.beginning-of-file | |
parent | Fifth batch for 2.11 (diff) | |
download | tgif-dbc540c7a5827529a3f58befc9e5b81a31ec8fab.tar.xz |
add QSORT
Add the macro QSORT, a convenient wrapper for qsort(3) that infers the
size of the array elements and supports the convention of initializing
empty arrays with a NULL pointer, which we use in some places.
Calling qsort(3) directly with a NULL pointer is undefined -- even with
an element count of zero -- and allows the compiler to optimize away any
following NULL checks. Using the macro avoids such surprises.
Add a semantic patch as well to demonstrate the macro's usage and to
automate the transformation of trivial cases.
Signed-off-by: Rene Scharfe <l.s.r@web.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Diffstat (limited to 't/t4211/expect.beginning-of-file')
0 files changed, 0 insertions, 0 deletions