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Author SHA1 Message Date
Ramsay Jones
84d32bf767 sparse: Fix mingw_main() argument number/type errors
Sparse issues 68 errors (two errors for each main() function) such
as the following:

      SP git.c
  git.c:510:5: error: too many arguments for function mingw_main
  git.c:510:5: error: symbol 'mingw_main' redeclared with different type \
    (originally declared at git.c:510) - different argument counts

The errors are caused by the 'main' macro used by the MinGW build
to provide a replacement main() function. The original main function
is effectively renamed to 'mingw_main' and is called from the new
main function. The replacement main is used to execute certain actions
common to all git programs on MinGW (e.g. ensure the standard I/O
streams are in binary mode).

In order to suppress the errors, we change the macro to include the
parameters in the declaration of the mingw_main function.

Unfortunately, this change provokes both sparse and gcc to complain
about 9 calls to mingw_main(), such as the following:

      CC git.o
  git.c: In function 'main':
  git.c:510: warning: passing argument 2 of 'mingw_main' from \
    incompatible pointer type
  git.c:510: note: expected 'const char **' but argument is of \
    type 'char **'

In order to suppress these warnings, since both of the main
functions need to be declared with the same prototype, we
change the declaration of the 9 main functions, thus:

    int main(int argc, char **argv)

Signed-off-by: Ramsay Jones <ramsay@ramsay1.demon.co.uk>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2013-04-28 12:32:08 -07:00
Junio C Hamano
7365c95d2d mergesort: rename it to llist_mergesort()
Even though the function is generic enough, <anything>sort() inherits
connotations from the standard function qsort() that sorts an array.
Rename it to llist_mergesort() and describe the external interface in
its header file.

This incidentally avoids name clashes with mergesort() some platforms
declare in, and contaminate user namespace with, their <stdlib.h>.

Reported-by: Brian Gernhardt
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2012-04-17 11:07:01 -07:00
René Scharfe
0db71e0fa9 add mergesort() for linked lists
This adds a generic bottom-up mergesort implementation for singly linked
lists.  It was inspired by Simon Tatham's webpage on the topic[1], but
not so much by his implementation -- for no good reason, really, just a
case of NIH.

[1] http://www.chiark.greenend.org.uk/~sgtatham/algorithms/listsort.html

Signed-off-by: Rene Scharfe <rene.scharfe@lsrfire.ath.cx>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2012-04-11 08:50:53 -07:00