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Top Forums Programming gcc: warning: will never be executed Post 302379805 by limmer on Saturday 12th of December 2009 11:03:16 AM
Old 12-12-2009
gcc: warning: will never be executed

I get this gcc warning, but the function works correctly. Any ideas?

Quote:
gcc -std=c99 -pedantic -O3 -Wall -Wunreachable-code a.c
Quote:
a.c:13: warning: will never be executed
Code:
#include <stdio.h>
#include <string.h>
#include <ctype.h>

int main(void)
{
    char A[50] = "";
    strcat(A, "Hello World!");

    int COUNT = 0;
    while(A[COUNT])
    {
        A[COUNT] = (char)(tolower(A[COUNT]));
        COUNT++;
    }
    puts(A); // output: hello world!
    return 0;
}


Last edited by limmer; 12-12-2009 at 12:09 PM..
 

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topsysproc(1m)							   USER COMMANDS						    topsysproc(1m)

NAME
topsysproc - top syscalls by process name. Uses DTrace. SYNOPSIS
topsysproc [-Cs] [interval [count]] DESCRIPTION
This program continually prints a report of the number of system calls by process name, and refreshes the display every 1 second or as specified at the command line. Similar data can be fetched with "prstat -m". Since this uses DTrace, only users with root privileges can run this command. OPTIONS
-C don't clear the screen -s print per second values EXAMPLES
Default output, 1 second updates, # topsysproc Print every 5 seconds, # topsysproc 5 Print a scrolling output, # topsysproc -C FIELDS
load avg load averages, see uptime(1) syscalls total syscalls in this interval syscalls/s syscalls per second PROCESS process name COUNT total syscalls in this interval COUNT/s syscalls per second NOTES
There may be several PIDs with the same process name. DOCUMENTATION
See the DTraceToolkit for further documentation under the Docs directory. The DTraceToolkit docs may include full worked examples with ver- bose descriptions explaining the output. EXIT
topsysproc will run until Ctrl-C is hit. AUTHOR
Brendan Gregg [Sydney, Australia] SEE ALSO
dtrace(1M), prstat(1M) version 0.90 Jun 13, 2005 topsysproc(1m)
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