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| author |  René Scharfe <l.s.r@web.de> | 2017-01-22 18:51:11 +0100 |
|---|---|---|
| committer |  Junio C Hamano <gitster@pobox.com> | 2017-01-23 11:02:34 -0800 |
| commit | 04ee8b875b96c096c479132adca02fa734c3fa96 (patch) | |
| tree | c9a761273a585248192544fd8dca35d0e678aada /Makefile | |
| parent | Almost ready for 2.11.1 (diff) | |
| download | tgif-04ee8b875b96c096c479132adca02fa734c3fa96.tar.xz | |
compat: add qsort_s()
The function qsort_s() was introduced with C11 Annex K; it provides the
ability to pass a context pointer to the comparison function, supports
the convention of using a NULL pointer for an empty array and performs a
few safety checks.
Add an implementation based on compat/qsort.c for platforms that lack a
native standards-compliant qsort_s() (i.e. basically everyone). It
doesn't perform the full range of possible checks: It uses size_t
instead of rsize_t and doesn't check nmemb and size against RSIZE_MAX
because we probably don't have the restricted size type defined. For
the same reason it returns int instead of errno_t.
Signed-off-by: Rene Scharfe <l.s.r@web.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Diffstat (limited to 'Makefile')
| -rw-r--r-- | Makefile | 8 |
1 files changed, 8 insertions, 0 deletions
@@ -279,6 +279,9 @@ all:: # is a simplified version of the merge sort used in glibc. This is # recommended if Git triggers O(n^2) behavior in your platform's qsort(). # +# Define HAVE_ISO_QSORT_S if your platform provides a qsort_s() that's +# compatible with the one described in C11 Annex K. +# # Define UNRELIABLE_FSTAT if your system's fstat does not return the same # information on a not yet closed file that lstat would return for the same # file after it was closed. @@ -1423,6 +1426,11 @@ ifdef INTERNAL_QSORT COMPAT_CFLAGS += -DINTERNAL_QSORT COMPAT_OBJS += compat/qsort.o endif +ifdef HAVE_ISO_QSORT_S + COMPAT_CFLAGS += -DHAVE_ISO_QSORT_S +else + COMPAT_OBJS += compat/qsort_s.o +endif ifdef RUNTIME_PREFIX COMPAT_CFLAGS += -DRUNTIME_PREFIX endif |