• Linus Torvalds's avatar
    gcc-9: don't warn about uninitialized btrfs extent_type variable · 7e74e235
    Linus Torvalds authored
    The 'extent_type' variable does seem to be reliably initialized, but
    it's _very_ non-obvious, since there's a "goto next" case that jumps
    over the normal initialization.  That will then always trigger the
    "start >= extent_end" test, which will end up never falling through to
    the use of that variable.
    
    But the code is certainly not obvious, and the compiler warning looks
    reasonable.  Make 'extent_type' an int, and initialize it to an invalid
    negative value, which seems to be the common pattern in other places.
    Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
    7e74e235
inode.c 294 KB