New subject: [Bug 28452] warning: argument to 'sizeof' in 'memcpy' call is the same expression as the source; did you mean to provide an explicit length? [-Wsizeof-pointer-memaccess]

20 Sep 2011


      http://bugs.winehq.org/show_bug.cgi?id=28452
Summary: warning: argument to 'sizeof' in 'memcpy' call is the
                    same expression as the source; did you mean to provide
                    an explicit length? [-Wsizeof-pointer-memaccess]
           Product: Wine
           Version: 1.3.28
          Platform: x86
               URL: http://llvm.org/viewvc/llvm-project?view=rev&revision=
                    133155
        OS/Version: Linux
            Status: NEW
          Keywords: download, source
          Severity: normal
          Priority: P2
         Component: -unknown
        AssignedTo: wine-bugs@winehq.org
        ReportedBy: austinenglish@gmail.com
Created an attachment (id=36482)
 --> (http://bugs.winehq.org/attachment.cgi?id=36482)
full clang make log
A new warning in Clang, see
http://llvm.org/viewvc/llvm-project?view=rev&revision=133155.
There are 13 occurrences in Wine. According to AJ on irc, most look legitimate:
make[1]: Entering directory `/home/austin/wine-git/dlls/dmband'
band.c:176:68: warning: argument to 'sizeof' in 'memcpy' call is the same
expression as the source; did you mean to provide an explicit length?
[-Wsizeof-pointer-memaccess]
                memcpy (This->pDesc->pbMemData, pDesc->pbMemData, sizeof
(pDesc->pbMemData));
                                                ~~~~~~~~~~~~~~~~         
~~~~~~~^~~~~~~~~
make[1]: Entering directory `/home/austin/wine-git/dlls/dmcompos'
chordmap.c:166:68: warning: argument to 'sizeof' in 'memcpy' call is the same
expression as the source; did you mean to provide an explicit length?
[-Wsizeof-pointer-memaccess]
                memcpy (This->pDesc->pbMemData, pDesc->pbMemData, sizeof
(pDesc->pbMemData));
                                                ~~~~~~~~~~~~~~~~         
~~~~~~~^~~~~~~~~
audiopath.c:276:68: warning: argument to 'sizeof' in 'memcpy' call is the same
expression as the source; did you mean to provide an explicit length?
[-Wsizeof-pointer-memaccess]
                memcpy (This->pDesc->pbMemData, pDesc->pbMemData, sizeof
(pDesc->pbMemData));
                                                ~~~~~~~~~~~~~~~~         
~~~~~~~^~~~~~~~~
graph.c:241:68: warning: argument to 'sizeof' in 'memcpy' call is the same
expression as the source; did you mean to provide an explicit length?
[-Wsizeof-pointer-memaccess]
                memcpy (This->pDesc->pbMemData, pDesc->pbMemData, sizeof
(pDesc->pbMemData));
                                                ~~~~~~~~~~~~~~~~         
~~~~~~~^~~~~~~~~
segment.c:567:68: warning: argument to 'sizeof' in 'memcpy' call is the same
expression as the source; did you mean to provide an explicit length?
[-Wsizeof-pointer-memaccess]
                memcpy (This->pDesc->pbMemData, pDesc->pbMemData, sizeof
(pDesc->pbMemData));
                                                ~~~~~~~~~~~~~~~~         
~~~~~~~^~~~~~~~~
script.c:245:70: warning: argument to 'sizeof' in 'memcpy' call is the same
expression as the source; did you mean to provide an explicit length?
[-Wsizeof-pointer-memaccess]
    memcpy (This->pDesc->pbMemData, pDesc->pbMemData, sizeof
(pDesc->pbMemData));
                                    ~~~~~~~~~~~~~~~~          ~~~~~~~^~~~~~~~~
make[1]: Entering directory `/home/austin/wine-git/dlls/dmstyle'
style.c:249:68: warning: argument to 'sizeof' in 'memcpy' call is the same
expression as the source; did you mean to provide an explicit length?
[-Wsizeof-pointer-memaccess]
                memcpy (This->pDesc->pbMemData, pDesc->pbMemData, sizeof
(pDesc->pbMemData));
                                                ~~~~~~~~~~~~~~~~         
~~~~~~~^~~~~~~~~
make[1]: Entering directory `/home/austin/wine-git/dlls/dmusic'
collection.c:213:68: warning: argument to 'sizeof' in 'memcpy' call is the same
expression as the source; did you mean to provide an explicit length?
[-Wsizeof-pointer-memaccess]
                memcpy (This->pDesc->pbMemData, pDesc->pbMemData, sizeof
(pDesc->pbMemData));
                                                ~~~~~~~~~~~~~~~~         
~~~~~~~^~~~~~~~~
make[1]: Entering directory `/home/austin/wine-git/dlls/dswave'
clang -c -I. -I. -I../../include -I../../include  -D__WINESRC__  -D_REENTRANT
-fPIC -Wall -pipe -fno-strict-aliasing -Wdeclaration-after-statement
-Wempty-body -Wstrict-prototypes -Wtype-limits -Wunused-but-set-parameter
-Wwrite-strings -Wpointer-arith  -g -O2  -o dswave.o dswave.c
dswave.c:365:68: warning: argument to 'sizeof' in 'memcpy' call is the same
expression as the source; did you mean to provide an explicit length?
[-Wsizeof-pointer-memaccess]
                memcpy (This->pDesc->pbMemData, pDesc->pbMemData, sizeof
(pDesc->pbMemData));
                                                ~~~~~~~~~~~~~~~~         
~~~~~~~^~~~~~~~~
make[1]: Entering directory `/home/austin/wine-git/dlls/msvcrt'
locale.c:103:51: warning: argument to 'sizeof' in 'memcpy' call is the same
expression as the source; did you mean to provide an explicit length?
[-Wsizeof-pointer-memaccess]
      memcpy(name, _country_synonyms[i+1], sizeof(_country_synonyms[i+1]));
                   ~~~~~~~~~~~~~~~~~~~~~~         ^~~~~~~~~~~~~~~~~~~~~~
winhttp.c:662:89: warning: argument to 'sizeof' in 'memcmp' call is the same
expression as the source; did you mean to dereference it?
[-Wsizeof-pointer-memaccess]
    ok(memcmp(buffer, reverse ? test_flag_coalesce_reverse :
test_flag_coalesce, sizeof(reverse ? test_flag_coalesce_reverse :
test_flag_coalesce)) == 0, "WinHttpQueryHeaders returned incorrect string.\n");
                      ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
        ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
winhttp.c:686:101: warning: argument to 'sizeof' in 'memcmp' call is the same
expression as the source; did you mean to dereference it?
[-Wsizeof-pointer-memaccess]
    ok(memcmp(buffer, reverse ? test_flag_coalesce_comma_reverse :
test_flag_coalesce_comma, sizeof(reverse ? test_flag_coalesce_comma_reverse :
test_flag_coalesce_comma)) == 0,
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~        
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
winhttp.c:712:109: warning: argument to 'sizeof' in 'memcmp' call is the same
expression as the source; did you mean to dereference it?
[-Wsizeof-pointer-memaccess]
    ok(memcmp(buffer, reverse ? test_flag_coalesce_semicolon_reverse :
test_flag_coalesce_semicolon, sizeof(reverse ?
test_flag_coalesce_semicolon_reverse : test_flag_coalesce_semicolon)) == 0,
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[Bug 28452] New: warning: argument to 'sizeof' in 'memcpy' call is the same expression as the source; did you mean to provide an explicit length? [-Wsizeof-pointer-memaccess]