Re: New build warning: implicit declaration of function âasprintfâ when building lto-plugin.o

[Mikhail Maltsev <maltsevm at gmail dot com>]

On 29.06.2015 14:24, Uros Bizjak wrote:
> Hello!
> 
> Recent commit introduced following build warning:
> 
> /home/uros/gcc-svn/trunk/lto-plugin/lto-plugin.c: In function
> âclaim_file_handlerâ:
> /home/uros/gcc-svn/trunk/lto-plugin/lto-plugin.c:930:16: warning:
> implicit declaration of function âasprintfâ
> [-Wimplicit-function-declaration]
>       t = hi ? asprintf (&objname, "%s@0x%x%08x", file->name, lo, hi)

Are you sure that it is recent? It started appearing in my builds since
r223590 (about a month ago), the previous build was r223502 (it did not
contain this warning). Also, there is another warning in libiberty
(started in the same commit):

/home/jenkins/workspace/build-gcc-trunk/src/libiberty/getruntime.c: In
function 'get_run_time':
/home/jenkins/workspace/build-gcc-trunk/src/libiberty/getruntime.c:98:14: warning:
enum conversion when passing argument 1 of 'getrusage' is invalid in C++
[-Wc++-compat]
   getrusage (0, &rusage);
              ^
In file included from
/home/jenkins/workspace/build-gcc-trunk/src/libiberty/getruntime.c:47:0:
/usr/include/x86_64-linux-gnu/sys/resource.h:88:12: note: expected
'__rusage_who_t {aka enum __rusage_who}' but argument is of type 'int'
 extern int getrusage (__rusage_who_t __who, struct rusage *__usage)
__THROW;
            ^
/home/jenkins/workspace/build-gcc-trunk/src/lto-plugin/lto-plugin.c: In
function 'claim_file_handler':
/home/jenkins/workspace/build-gcc-trunk/src/lto-plugin/lto-plugin.c:930:16:
warning: implicit declaration of function 'asprintf'
[-Wimplicit-function-declaration]
       t = hi ? asprintf (&objname, "%s@0x%x%08x", file->name, lo, hi)

This change seems somewhat related:
https://gcc.gnu.org/viewcvs/gcc?view=revision&revision=223589

-- 
Regards,
    Mikhail Maltsev