John Marriott wrote:
> I just moved up to mingw64 with gcc 12.1.0 on my windows 8.1 x64 box.
>
> I now have two warnings. The first:
> <snip>
> gcc -c -I. -Iproto -DWIN32 -DWINVER=0x0603 -D_WIN32_WINNT=0x0603
> -DHAVE_PATHDEF -DFEAT_NORMAL -DHAVE_STDINT_H -D__USE_MINGW_ANSI_STDIO
> -pipe -march=native -Wall -O3 -fomit-frame-pointer -freg-struct-return
> -fpie -fPIE -DFEAT_GUI_MSWIN -DFEAT_CLIPBOARD ui.c -o gobjnative/ui.o
> In file included from ui.c:18:
> In function 'read_from_input_buf',
> inlined from 'inchar_loop' at ui.c:396:12:
> vim.h:1776:37: warning: 'memmove' offset [-2147483647, -1] is out of the
> bounds [0, 256] of object 'inbuf' with type 'char_u[256]' {aka 'unsigned
> char[256]'} [-Warray-bounds]
> 1776 | # define mch_memmove(to, from, len) memmove((char*)(to),
> (char*)(from), (size_t)(len))
> | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
> vim.h:1776:37: note: in definition of macro 'mch_memmove'
> 1776 | # define mch_memmove(to, from, len) memmove((char*)(to),
> (char*)(from), (size_t)(len))
> | ^~~~~~~
> ui.c: In function 'inchar_loop':
> ui.c:750:17: note: 'inbuf' declared here
> 750 | static char_u inbuf[INBUFLEN + MAX_KEY_CODE_LEN];
> | ^~~~~
> </snip>
No idea what's wrong here, probably nothing.
> The second:
> <snip>
> gcc -I. -Iproto -DWIN32 -DWINVER=0x0603 -D_WIN32_WINNT=0x0603
> -DHAVE_PATHDEF -DFEAT_NORMAL -DHAVE_STDINT_H -D__USE_MINGW_ANSI_STDIO
> -pipe -march=native -Wall -O3 -fomit-frame-pointer -freg-struct-return
> -fpie -fPIE -c tee.c
> ing: return type of 'main' is not 'int' [-Wmain]
> 82 | main(int argc, char *argv[])
> | ^~~~
That's easy to fix.
> tee.c: In function 'main':
> tee.c:86:17: warning: unused variable 'opt' [-Wunused-variable]
> 86 | int opt;
> | ^~~
That's also easy.
> tee.c:122:24: warning: argument 1 range [18446744071562067968,
> 18446744073709551615] exceeds maximum object size 9223372036854775807
> [-Walloc-size-larger-than=]
> 122 | filepointers = calloc(numfiles, sizeof(FILE *));
> | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
> In file included from tee.c:33:
> d:\users\john\documents\software\mingw\mingw64\x86_64-w64-mingw32\include\malloc.h:57:17:
>
> note: in a call to allocation function 'calloc' declared here
> 57 | void *__cdecl calloc(size_t _NumOfElements,size_t
> _SizeOfElements);
> | ^~~~~~
> </snip>
No idea.
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