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/* Check for correct handling of static vs non-static, local vs
non-local variables in a zero-biased executable. */
/* Relevant compile flags are:
-Wall -g -I$prefix/include/valgrind
eg -Wall -g -I`pwd`/Inst/include/valgrind
*/
/* Unfortunately 2008 Feb 26, requires its own filter_varinfo3, since
nonstatic_local_{un}def are not handled properly and so end up with
compiler-dependent names, eg static_local_def.2919 and
static_local_undef.2921. So filter off the .nnnn part. */
#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>
static char static_global_def[10] = {0,0,0,0,0, 0,0,0,0,0};
char nonstatic_global_def[10] = {0,0,0,0,0, 0,0,0,0,0};
static char static_global_undef[10];
char nonstatic_global_undef[10];
void bar ( char* p1, char* p2, char* p3, char* p4 )
{
croak(p1);
croak(p2);
croak(p3);
croak(p4);
}
void foo ( void )
{
static char static_local_def[10] = {0,0,0,0,0, 0,0,0,0,0};
char nonstatic_local_def[10] = {0,0,0,0,0, 0,0,0,0,0};
static char static_local_undef[10];
char nonstatic_local_undef[10];
croak ( 1 + (char*)&static_global_def );
croak ( 2 + (char*)&nonstatic_global_def );
croak ( 3 + (char*)&static_global_undef );
croak ( 4 + (char*)&nonstatic_global_undef );
bar( 5 + (char*)&static_local_def,
6 + (char*)&nonstatic_local_def,
7 + (char*)&static_local_undef,
8 + (char*)&nonstatic_local_undef );
}
int main ( void )
{
foo();
return 0;
}
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