memcheck/tests/err_disable_arange1.c

   1
   2 /* Check some aspects of the use of the
   3    VALGRIND_ENABLE_ADDR_ERROR_REPORTING_IN_RANGE and
   4    VALGRIND_DISABLE_ADDR_ERROR_REPORTING_IN_RANGE macros. */
   5
   6 #include <stdio.h>
   7 #include <stdlib.h>
   8
   9 #include "../memcheck.h"
  10
  11 int main ( void )
  12 {
  13   volatile int* volatile mem
  14      = (volatile int* volatile)malloc(1000 * sizeof(int));
  15   free((void*)mem);
  16
  17   // Check that we get an invalid access complaint
  18   fprintf(stderr, "\nDoing invalid access.  Expect complaint.\n\n");
  19   mem[123] = 0;
  20
  21   // Now disable error reporting in the range
  22   fprintf(stderr, "\nDisabling address error reporting for the range.\n\n");
  23   VALGRIND_DISABLE_ADDR_ERROR_REPORTING_IN_RANGE(mem, 1000 * sizeof(int));
  24
  25   // Check that we get an invalid access complaint
  26   fprintf(stderr, "\nDoing invalid another access.  Expect no complaint.\n\n");
  27   mem[456] = 0;
  28
  29   // Re-enable reporting on the first byte of one word from the ignore range
  30   fprintf(stderr, "\nPartially reenabling address error reporting.\n\n");
  31   VALGRIND_ENABLE_ADDR_ERROR_REPORTING_IN_RANGE(&mem[789], 1);
  32
  33   // Check that we get an invalid access complaint
  34   fprintf(stderr, "\nDoing a third access.  Expect complaint.\n\n");
  35   mem[789] = 0;
  36
  37   // And now quit and expect to see a warning about two remaining ranges
  38   fprintf(stderr, "\nExiting.  Expect warnings of 2 remaining ranges.\n\n");
  39
  40   return 0;
  41 }