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/* Basic check of variable location identification, in a zero-biased
executable. */
/* Relevant compile flags are:
-Wall -g -I$prefix/include/valgrind
eg -Wall -g -I`pwd`/Inst/include/valgrind
*/
#include <stdio.h>
#include <stdlib.h>
#include <assert.h>
#include "memcheck/memcheck.h"
/* Cause memcheck to complain about the address "a" and so to print
its best guess as to what "a" actually is. a must be
addressible. */
void croak ( void* aV )
{
char* a = (char*)aV;
volatile char* undefp = malloc(1);
char saved = *a;
assert(undefp);
*a = *undefp;
(void) VALGRIND_CHECK_MEM_IS_DEFINED(a, 1);
*a = saved;
free((void *)undefp);
}
#include <stdio.h>
int global_u1;
int global_i1 = 17;
char global_u2[10];
char global_i2[10] = { 1,2,3,4,5,6,7,8,9,10 };
int main ( void )
{
int local;
char* onheap = malloc(3);
assert(onheap);
croak(onheap+1);
free(onheap);
croak( &global_u1 );
croak( &global_i1 );
croak( &global_u2[3] );
croak( &global_i2[7] );
croak( &local );
return 0;
}
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