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author | René Scharfe <l.s.r@web.de> | 2016-09-29 18:23:43 +0300 |
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committer | Junio C Hamano <gitster@pobox.com> | 2016-09-30 01:42:18 +0300 |
commit | dbc540c7a5827529a3f58befc9e5b81a31ec8fab (patch) | |
tree | cd2c485c62e68411e418616c6ca26923e24b3e1b /diffcore-order.c | |
parent | 21f862b498925194f8f1ebe8203b7a7df756555b (diff) |
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 'diffcore-order.c')
0 files changed, 0 insertions, 0 deletions