On Sun, Feb 03, 2013 at 11:19:43AM +0300, Dan Carpenter wrote:
>
> I don't get this warning on my version of Sparse.
>
> Sparse used to assume -m32 all the time but now that's been changed.
> Are you using the most recent version of Sparse? Try passing -m64.
Hmm, I got my version of sparse from
git://git.kernel.org/pub/scm/devel/sparse/sparse.git
... where the latest version is 0.4.4, dated November 21, 2011. Is
there a different dit repository I should be using?
I see that it doesn't complain with -m64, but the test program should
be valid for x86 with 32 bits just as much as 64 bits. Am I missing
something?
- Ted
#!/bin/sh
cat > /tmp/testcase.c << EOF
#include <unistd.h>
#include <stdio.h>
struct rb_node {
unsigned long __rb_parent_color;
struct rb_node *rb_right;
struct rb_node *rb_left;
} __attribute__((aligned(sizeof(long))));
struct extent_status {
struct rb_node rb_node;
unsigned long es_lblk; /* first logical block extent covers */
unsigned long es_len; /* length of extent in block */
unsigned long long es_pblk : 62; /* first physical block */
unsigned long long es_status : 2; /* record the status of extent */
};
int main(int argc, char **argv)
{
struct extent_status es;
es.es_status = 3;
printf("%d\n", es.es_status);
printf("size %u\n", sizeof(es));
}
EOF
echo "sparse /tmp/testcase.c"
sparse /tmp/testcase.c
echo " "
echo "sparse -m32 /tmp/testcase.c"
sparse -m32 /tmp/testcase.c
echo " "
echo "sparse -m64 /tmp/testcase.c"
sparse -m64 /tmp/testcase.c
