First, strtok can return NULL if there are no more tokens, so you should check for NULL before using the string returned from strtok.
But, the following is from the man page:
Avoid using these functions. If you do use them, note that:
These functions modify their first argument.
These functions cannot be used on constant strings.
The identity of the delimiting character is lost.
The strtok() function uses a static buffer while parsing, so
it's not thread safe. Use strtok_r() if this matters to you.
Basically, stay clear of these, I have never seen anybody use them to write a program that did not crash at strange times.
On 2/21/07, cspin_2001 <> wrote:
For some reason the strcmp function generates a segmentation fault
when I run this code on the TS-7260. I am using the crosstools to
compile it. Has anyone else had this problem. Any ideas how to fix
it.
Thanks
Charlie
void gps_Capture()
{
char bufcopy[512], temp[512];
int res,bytes;
char gpapb[] = "$GPAPB", gpgll[] = "$GPGLL";
char *token = NULL;
ioctl(fd2,FIONREAD,&bytes);
if (bytes > 0 )
{
res = read(fd2,gpsbuf,512);
gpsbuf[res]=0;
if(res >10 )
{
token = strtok(gpsbuf,",");
if(strcmp(token, gpapb) == 0)
{
printf( "Token = \"%s\"\n", token );
}
}//end if(res > 0)
}//if (bytes > 0)
return;
}// end gps capture
-- Dr. Don W. Carr J. G. Montenegro 2258 Guadalajara, Mexico +52-333-630-0704 +52-333-836-4500 ext 2930
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