29b00e6 would have been caught with Clang in its default configuration (and not by GCC due to a bug), as pointed out in this thread: https://lore.kernel.org/lkml/[email protected]/
However, -Wuninitialized also disables -Wsometimes-uninitialized so this was missed by both compilers :(
I am going to test the following diff then send it along right away if there are no additional warnings:
diff --git a/scripts/Makefile.extrawarn b/scripts/Makefile.extrawarn
index 768306add591..f4332981ea85 100644
--- a/scripts/Makefile.extrawarn
+++ b/scripts/Makefile.extrawarn
@@ -72,5 +72,6 @@ KBUILD_CFLAGS += $(call cc-disable-warning, format)
KBUILD_CFLAGS += $(call cc-disable-warning, sign-compare)
KBUILD_CFLAGS += $(call cc-disable-warning, format-zero-length)
KBUILD_CFLAGS += $(call cc-disable-warning, uninitialized)
+KBUILD_CFLAGS += $(call cc-option, -Wsometimes-uninitialized)
endif
endif
Side note, looks like this might be a good time to tell Linus about the KernelCI work that is going on: https://lore.kernel.org/lkml/CAHk-=wggjLsi-1BmDHqWAJPzBvTD_-MQNo5qQ9WCuncnyWPROg@mail.gmail.com/
29b00e6 would have been caught with Clang in its default configuration (and not by GCC due to a bug), as pointed out in this thread: https://lore.kernel.org/lkml/[email protected]/
However,
-Wuninitializedalso disables-Wsometimes-uninitializedso this was missed by both compilers :(I am going to test the following diff then send it along right away if there are no additional warnings:
Side note, looks like this might be a good time to tell Linus about the KernelCI work that is going on: https://lore.kernel.org/lkml/CAHk-=wggjLsi-1BmDHqWAJPzBvTD_-MQNo5qQ9WCuncnyWPROg@mail.gmail.com/