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    Subject[PATCH 2/3] tools/vm/page-types: suppress gcc warnings
    Date
    Define 'end' and 'first' as volatile to suppress
    gcc warnings:

    page-types.c:854:13: warning: variable 'end' might be
    clobbered by 'longjmp' or 'vfork' [-Wclobbered]
    page-types.c:858:6: warning: variable 'first' might be
    clobbered by 'longjmp' or 'vfork' [-Wclobbered]

    Signed-off-by: Sergey Senozhatsky <sergey.senozhatsky@gmail.com>
    ---
    tools/vm/page-types.c | 5 +++--
    1 file changed, 3 insertions(+), 2 deletions(-)

    diff --git a/tools/vm/page-types.c b/tools/vm/page-types.c
    index bcf5ec7..0651cd5 100644
    --- a/tools/vm/page-types.c
    +++ b/tools/vm/page-types.c
    @@ -851,11 +851,12 @@ static void walk_file(const char *name, const struct stat *st)
    uint8_t vec[PAGEMAP_BATCH];
    uint64_t buf[PAGEMAP_BATCH], flags;
    unsigned long nr_pages, pfn, i;
    - off_t off, end = st->st_size;
    + off_t off;
    int fd;
    ssize_t len;
    void *ptr;
    - int first = 1;
    + volatile int first = 1;
    + volatile off_t end = st->st_size;

    fd = checked_open(name, O_RDONLY|O_NOATIME|O_NOFOLLOW);

    --
    2.6.2.280.g74301d6


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