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SubjectRe: [PATCH] warning: `__attribute_used__' redefined
On Mon, 9 Feb 2004, Andrew Morton wrote:

> It is more likely that we need to extend the __KERNEL__ coverage somewhere.
>
> Can you please do a `gcc -H' of that application and show us the inclusion
> route by which it is hitting compiler.h?

Andrew,

Here's the sample "sig.c". Just compile with "cc sig.c"



#include <signal.h> /* signal */
#include <stdio.h> /* printf */

void action(int signum);

int main(int argc, char *argv[])
{
int i;
for(i = 1; i < 31; i++) {
if(i == 9 || i == 19)
continue;

signal(i, action);
}
}

void action(int signum)
{
printf("%d\n", signum);
}




Here's output of "gcc -H sig.c" gcc 2.95.3 glibc 2.2.5 linux 2.6.3-rc2


/usr/include/signal.h
/usr/include/features.h
/usr/include/sys/cdefs.h
/usr/include/gnu/stubs.h
/usr/include/bits/sigset.h
/usr/include/bits/types.h
/usr/lib/gcc-lib/i586-pc-linux-gnu/2.95.3/include/stddef.h
/usr/include/bits/pthreadtypes.h
/usr/include/bits/sched.h
/usr/include/bits/signum.h
/usr/include/time.h
/usr/include/bits/siginfo.h
/usr/include/bits/wordsize.h
/usr/include/bits/sigaction.h
/usr/include/bits/sigcontext.h
/usr/include/asm/sigcontext.h
/usr/include/linux/compiler.h
/usr/include/linux/compiler-gcc2.h
/usr/include/linux/compiler-gcc.h
In file included from /usr/include/linux/compiler.h:18,
from /usr/include/asm/sigcontext.h:4,
from /usr/include/bits/sigcontext.h:28,
from /usr/include/signal.h:307,
from sig.c:1:
/usr/include/linux/compiler-gcc2.h:21: warning: `__attribute_used__' redefined
/usr/include/sys/cdefs.h:170: warning: this is the location of the previous definition
/usr/include/bits/sigstack.h
/usr/include/bits/sigthread.h
/usr/include/stdio.h
/usr/lib/gcc-lib/i586-pc-linux-gnu/2.95.3/include/stddef.h
/usr/include/libio.h
/usr/include/_G_config.h
/usr/lib/gcc-lib/i586-pc-linux-gnu/2.95.3/include/stddef.h
/usr/include/wchar.h
/usr/lib/gcc-lib/i586-pc-linux-gnu/2.95.3/include/stddef.h
/usr/include/bits/wchar.h
/usr/include/gconv.h
/usr/include/wchar.h
/usr/lib/gcc-lib/i586-pc-linux-gnu/2.95.3/include/stddef.h
/usr/lib/gcc-lib/i586-pc-linux-gnu/2.95.3/include/stddef.h
/usr/lib/gcc-lib/i586-pc-linux-gnu/2.95.3/include/stdarg.h
/usr/include/bits/stdio_lim.h


Thanks,
Jeff


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