diff options
| author | Nathan Chancellor <[email protected]> | 2020-04-06 20:10:45 -0700 |
|---|---|---|
| committer | Linus Torvalds <[email protected]> | 2020-04-07 10:43:43 -0700 |
| commit | 8306b057a85ec07482da5d4b99d5c0b47af69be1 (patch) | |
| tree | d94b01a748b0c99c94a2cf222e4a8655262e6747 /lib/dynamic_debug.c | |
| parent | 295bcca84916cb5079140a89fccb472bb8d1f6e2 (diff) | |
lib/dynamic_debug.c: use address-of operator on section symbols
Clang warns:
../lib/dynamic_debug.c:1034:24: warning: array comparison always
evaluates to false [-Wtautological-compare]
if (__start___verbose == __stop___verbose) {
^
1 warning generated.
These are not true arrays, they are linker defined symbols, which are just
addresses. Using the address of operator silences the warning and does
not change the resulting assembly with either clang/ld.lld or gcc/ld
(tested with diff + objdump -Dr).
Suggested-by: Nick Desaulniers <[email protected]>
Signed-off-by: Nathan Chancellor <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Acked-by: Jason Baron <[email protected]>
Link: https://github.com/ClangBuiltLinux/linux/issues/894
Link: http://lkml.kernel.org/r/[email protected]
Signed-off-by: Linus Torvalds <[email protected]>
Diffstat (limited to 'lib/dynamic_debug.c')
| -rw-r--r-- | lib/dynamic_debug.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/lib/dynamic_debug.c b/lib/dynamic_debug.c index aae17d9522e5..8f199f403ab5 100644 --- a/lib/dynamic_debug.c +++ b/lib/dynamic_debug.c @@ -1031,7 +1031,7 @@ static int __init dynamic_debug_init(void) int n = 0, entries = 0, modct = 0; int verbose_bytes = 0; - if (__start___verbose == __stop___verbose) { + if (&__start___verbose == &__stop___verbose) { pr_warn("_ddebug table is empty in a CONFIG_DYNAMIC_DEBUG build\n"); return 1; } |