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Re: Too many warnings building Emacs with GCC 6 on MSYS2-MinGW64
From: |
Angelo Graziosi |
Subject: |
Re: Too many warnings building Emacs with GCC 6 on MSYS2-MinGW64 |
Date: |
Wed, 31 Aug 2016 21:56:45 +0200 |
User-agent: |
Mozilla/5.0 (Windows NT 10.0; WOW64; rv:45.0) Gecko/20100101 Thunderbird/45.2.0 |
Il 31/08/2016 20:47, Eli Zaretskii ha scritto:
Cc: address@hidden
From: Ken Brown <address@hidden>
Date: Wed, 31 Aug 2016 14:11:41 -0400
According to
http://pubs.opengroup.org/onlinepubs/9699919799/functions/exec.html
http://man7.org/linux/man-pages/man2/execve.2.html
you should include <unistd.h>, and the return type should be int.
Thanks. On MS-Windows, execve is not declared in unistd.h, it's
declared in process.h (which we cannot include, because it conflicts
with our own process.h). Nevertheless, doing what you suggest is
worth a try, since there are no other ideas.
As always, Ken's suggestions are right!
Now this test case,
$ cat test.c
/*#include <stdint.h>*/
#include <unistd.h>
/*extern intptr_t execve (const char *, char * const *, char * const *);*/
/*extern intptr_t execve (const char *, char * const [], char * const []);*/
extern int execve (const char *, char * const *, char * const *);
int main()
{
return 0;
}
builds without warnings with
$ gcc -Wall test.c
BTW, I tried my first test case (that with the Emacs definition of
'execve') with the other compilers in MSYS2/MinGW-64/32, and both MSYS2
gcc 5.3 and MinGW64 gcc-6.1 give the warning, instead MinGW32 gcc-6.1
does not print warnings.
Ciao,
Angelo.
- Too many warnings building Emacs with GCC 6 on MSYS2-MinGW64, Angelo Graziosi, 2016/08/31
- Re: Too many warnings building Emacs with GCC 6 on MSYS2-MinGW64, Eli Zaretskii, 2016/08/31
- Re: Too many warnings building Emacs with GCC 6 on MSYS2-MinGW64, Angelo Graziosi, 2016/08/31
- Re: Too many warnings building Emacs with GCC 6 on MSYS2-MinGW64, Eli Zaretskii, 2016/08/31
- Re: Too many warnings building Emacs with GCC 6 on MSYS2-MinGW64, Angelo Graziosi, 2016/08/31
- Re: Too many warnings building Emacs with GCC 6 on MSYS2-MinGW64, Ken Brown, 2016/08/31
- Re: Too many warnings building Emacs with GCC 6 on MSYS2-MinGW64, Eli Zaretskii, 2016/08/31
- Re: Too many warnings building Emacs with GCC 6 on MSYS2-MinGW64,
Angelo Graziosi <=
- Re: Too many warnings building Emacs with GCC 6 on MSYS2-MinGW64, Eli Zaretskii, 2016/08/31
- Re: Too many warnings building Emacs with GCC 6 on MSYS2-MinGW64, Eli Zaretskii, 2016/08/31