gcc/libmudflap/testsuite/libmudflap.c/hook-allocstuff.c

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#include <stdio.h>
#include <stdlib.h>
int main ()
{
char *foo = (char *) malloc (10);
strcpy (foo, "hello");
foo = (char *) realloc (foo, 20);
printf ("%s", foo);
if (strcmp (foo, "hello"))
abort ();
free (foo);
printf (" world\n");
return 0;
}
/* { dg-output "hello world" } */