Nathan Chancellor <nathan@xxxxxxxxxx> wrote:
> This patch as commit 0443b01eccbb ("cachefiles: Implement the I/O
> routines") in -next causes the following clang warning/error:
>
> fs/cachefiles/io.c:489:6: error: variable 'ret' is used uninitialized whenever 'if' condition is false [-Werror,-Wsometimes-uninitialized]
> if (pos == 0)
> ^~~~~~~~
> fs/cachefiles/io.c:492:6: note: uninitialized use occurs here
> if (ret < 0) {
> ^~~
> fs/cachefiles/io.c:489:2: note: remove the 'if' if its condition is always true
> if (pos == 0)
> ^~~~~~~~~~~~~
> fs/cachefiles/io.c:440:9: note: initialize the variable 'ret' to silence this warning
> int ret;
> ^
> = 0
> 1 error generated.
pos = cachefiles_inject_remove_error();
if (pos == 0)
ret = vfs_fallocate(file, FALLOC_FL_PUNCH_HOLE | FALLOC_FL_KEEP_SIZE,
That should be:
ret = cachefiles_inject_remove_error();
if (ret == 0)
ret = vfs_fallocate(file, FALLOC_FL_PUNCH_HOLE | FALLOC_FL_KEEP_SIZE,
David
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