Clang warns:
../kernel/extable.c:37:52: warning: array comparison always evaluates to
a constant [-Wtautological-compare]
if (main_extable_sort_needed && __stop___ex_table > __start___ex_table) {
^
1 warning generated.
These are not true arrays, they are linker defined symbols, which are
just addresses so there is not a real issue here. Use the
COMPARE_SECTIONS macro to silence this warning by casting the linker
defined symbols to unsigned long, which keeps the logic the same.
Link: https://github.com/ClangBuiltLinux/linux/issues/765
Signed-off-by: Nathan Chancellor <natechancellor@xxxxxxxxx>
---
kernel/extable.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/kernel/extable.c b/kernel/extable.c
index a0024f27d3a1..17bf4ccb9de9 100644
--- a/kernel/extable.c
+++ b/kernel/extable.c
@@ -34,7 +34,8 @@ u32 __initdata __visible main_extable_sort_needed = 1;
/* Sort the kernel's built-in exception table */
void __init sort_main_extable(void)
{
- if (main_extable_sort_needed && __stop___ex_table > __start___ex_table) {
+ if (main_extable_sort_needed &&
+ COMPARE_SECTIONS(__stop___ex_table, >, __start___ex_table)) {
pr_notice("Sorting __ex_table...\n");
sort_extable(__start___ex_table, __stop___ex_table);
}
--
2.25.1
