memcheck/tests/wrap1.c

   1
   2 #include <stdio.h>
   3 #include "valgrind.h"
   4
   5 /* The simplest possible wrapping test: just call a wrapped function
   6    and check we run the wrapper instead. */
   7
   8 /* The "original" function */
   9 __attribute__((noinline))
  10 void actual ( void )
  11 {
  12    printf("in actual\n");
  13 }
  14
  15 /* The wrapper.  Since this executable won't have a soname, we have to
  16    use "NONE", since V treats any executable/.so which lacks a soname
  17    as if its soname was "NONE". */
  18 void I_WRAP_SONAME_FNNAME_ZU(NONE,actual) ( void )
  19 {
  20    OrigFn fn;
  21    VALGRIND_GET_ORIG_FN(fn);
  22    printf("wrapper-pre\n");
  23    CALL_FN_v_v(fn);
  24    printf("wrapper-post\n");
  25 }
  26
  27 /* --------------- */
  28
  29 int main ( void )
  30 {
  31    printf("starting\n");
  32    actual();
  33    return 0;
  34 }