Hi. I've discovered a nasty bug in glibc 2.1: arguments to strcmp() (and possibly other functions) are evaluated more than once:
$ cat kk.c
#include <stdio.h>
#include <string.h>
static char * kk(void)
{
printf("Got here!\n");
return "yeah";
}
main()
{
strcmp(kk(), "yeah");
}
$ gcc -O2 -o kk kk.c
$ ./kk
Got here!
Got here!
Got here!
$ _
--
Juan Cespedes
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