[Bug 35369] New: differences between ./dlls/shlwapi/wsprintf.c and ./dlls/user32/wsprintf.c

http://bugs.winehq.org/show_bug.cgi?id=35369

Bug ID: 35369
           Summary: differences between ./dlls/shlwapi/wsprintf.c and
                    ./dlls/user32/wsprintf.c
           Product: Wine
           Version: 1.7.10
          Hardware: x86
                OS: Linux
            Status: UNCONFIRMED
          Severity: normal
          Priority: P2
         Component: shlwapi
          Assignee: [e-mail]
          Reporter: [e-mail]
    Classification: Unclassified

I was looking for an implementation of wsprintf, then I saw the comments in
these files:

dlls/shlwapi/wsprintf.c:
 * This code is duplicated in user32. If you change something here make sure
 * to change it in user32 too.
dlls/user32/wsprintf.c:
 * This code is duplicated in shlwapi. If you change something here make sure
 * to change it in shlwapi too.

This didn't always seem to happen in the past, as you can see in the diff:

--- ./dlls/shlwapi/wsprintf.c    2014-01-03 20:00:47.000000000 +0100
+++ ./dlls/user32/wsprintf.c    2014-01-03 20:00:47.000000000 +0100
(only the most remarkable changes:)
(see the data types UINT vs INT)
-INT WINAPI wvnsprintfA( LPSTR buffer, INT maxlen, LPCSTR spec, __ms_va_list
args )
+static INT wvsnprintfA( LPSTR buffer, UINT maxlen, LPCSTR spec, __ms_va_list
args )

-    CHAR number[20];
+    CHAR number[21]; /* 64bit number can be 18446744073709551616 which is 20
chars. and a \0 */

Last one might possibly be the reason for some instabilities, depends where the
function is used. It's possibly a good idea to try to use the share the same
file on both places - and to look for more similar problems...